Julien Berger, Jean-Henry Ferrasse, Suelen Gasparin, Olivier Le Metayer, Benjamin Kadoch. Thermodynamic analysis of the effect of mass transfer on a real building wall efficiency under climatic transient conditions. International Journal of Thermal Sciences, 2024, 202, pp.109050. ⟨10.1016/j.ijthermalsci.2024.109050⟩. ⟨hal-04784805⟩ Plus de détails...
Within the environmental context, designing energy efficient buildings is crucial. Standard performance indicators evaluate the quantity of energy going through the wall. Such indicator considers the energy balance of the wall, i.e the first thermodynamic law. However, the main drawback of such approach is that it does not qualify the energy quality, which can be done by the second thermodynamic law. This paper proposed a performance indicator that both quantifies and qualifies the energy efficiency of a wall. It is based on the evaluation of the exergy destruction rate. The performance indicator has been developed for transient conditions induced by climatic variations of temperature and relative humidity and considering coupled heat and mass transfer in the wall. Calculations were carried out with experimental data obtained from a wall demonstrator under climatic conditions and comparisons with standard performance indicators were also performed. The corresponding results highlighted that the exergy loss allows a more accurate assessment of the energy performance and the influence of mass transfer on it. Indeed, the mass transfer can account for 30% in the exergy destruction.
Julien Berger, Jean-Henry Ferrasse, Suelen Gasparin, Olivier Le Metayer, Benjamin Kadoch. Thermodynamic analysis of the effect of mass transfer on a real building wall efficiency under climatic transient conditions. International Journal of Thermal Sciences, 2024, 202, pp.109050. ⟨10.1016/j.ijthermalsci.2024.109050⟩. ⟨hal-04784805⟩
Journal: International Journal of Thermal Sciences
Gautier Hypolite, Olivier Boutin, Sandrine Del Sole, Jean-François Cloarec, Jean-Henry Ferrasse. Evaluation of a water network’s energy potential in dynamic operation. Energy, 2023, 271, pp.127066. ⟨10.1016/j.energy.2023.127066⟩. ⟨hal-04504325⟩ Plus de détails...
To address the challenges of the energy transition, reducing consumption and optimizing energy production is crucial for all industrial sectors. In the future, water issues will be as important as energy issues, making the optimization of water supply systems critical. The water sector represents large energy consumption for pumping and heating. In regards to this consumption, water systems have a great potential for energy recovery through hydroelectric production or thermal energy recovery. This article aims to quantify the energy potential of water supply systems, which has not been well understood until now. The energy potential of these systems encompasses hydropower recovery and thermal potential, including heat recovery and cold recovery. For that, a method is developed to estimate this potential, including the recoverable power, its location, and its temporal variation. The method can be used for hydroelectricity production, as well as for heat and cold recovery. For a whole year, the results indicate a hydraulic potential of 15 MWh.km−1.year−1, and respectively 1650 MWh.km−1 .year−1 for heat recovery and 766 MWh.km−1.year−1 for cold recovery.
Gautier Hypolite, Olivier Boutin, Sandrine Del Sole, Jean-François Cloarec, Jean-Henry Ferrasse. Evaluation of a water network’s energy potential in dynamic operation. Energy, 2023, 271, pp.127066. ⟨10.1016/j.energy.2023.127066⟩. ⟨hal-04504325⟩
Kelly Ohanessian, Cristian Barca, Audrey Soric, Jean-Henry Ferrasse, Olivier Boutin. Simulation of Alternative Process Schemes for Hydrofluoric and Phosphoric Acid Stream Treatment and Nutrient Recovery. Process Integration and Optimization for Sustainability, 2023, 7 (4), pp.831-845. ⟨10.1007/s41660-023-00326-x⟩. ⟨hal-04504375⟩ Plus de détails...
Hydrofluoric and phosphoric acid streams produced by the microelectronic industry usually present high flow and high contents of phosphorus, nitrogen, fluorine, and organic carbon. This study aims at evaluating the efficiency and suitability of alternative process schemes for the treatment and valorization of hydrofluoric and phosphoric acid streams. A comparative approach is proposed, based on the simulation of different process schemes, each involving several steps of physicochemical and biological treatments. The main objectives are to compare (i) the treatment efficiency, (ii) the consumption of chemical reagents, and (iii) the recovery of high-value by-products (e.g. calcium fluoride, struvite, and hydroxyapatite), and hence to identify the most suitable process scheme. Furthermore, this study contributes to the development of chemical precipitation and bioconversion models that can be applied for further simulation studies on wastewater treatment processes. The results indicate that the use of calcium hydroxide (Ca(OH2)) as the only source of Ca2+ and OH− ions for the precipitation steps is a promising way to reduce the total consumption of chemical reagents while recovering high purity (> 98%) calcium fluoride and struvite. Moreover, the use of a membrane aerated biofilm reactor after the precipitation steps may further decrease organic carbon and nitrogen contents below 125 g COD.m−3 and 30 g N.m−3, thus allowing effluent discharge to natural waters. Overall, this study gives useful information for the development of innovative treatment processes, and it provides crucial data for the selection of the most promising alternative schemes.
Kelly Ohanessian, Cristian Barca, Audrey Soric, Jean-Henry Ferrasse, Olivier Boutin. Simulation of Alternative Process Schemes for Hydrofluoric and Phosphoric Acid Stream Treatment and Nutrient Recovery. Process Integration and Optimization for Sustainability, 2023, 7 (4), pp.831-845. ⟨10.1007/s41660-023-00326-x⟩. ⟨hal-04504375⟩
Journal: Process Integration and Optimization for Sustainability
Antonello Tangredi, Cristian Barca, Jean-Henry Ferrasse, Olivier Boutin. Effect of process parameters on phosphorus conversion pathways during hydrothermal treatment of sewage sludge: A review. Chemical Engineering Journal, 2023, 463, pp.142342. ⟨10.1016/j.cej.2023.142342⟩. ⟨hal-04303018⟩ Plus de détails...
Sewage sludge represents a renewable source of organic carbon and nutrients such as nitrogen (N), potassium (K), and phosphorus (P) that can be valorised through the recovery of energy carriers (e.g. biofuels) and fertilizers (N, K, and P precipitates). This review analyses>60 recent studies that have investigated P recovery potential from sewage sludge by hydrothermal processes. The effect of process parameters such as temperature, residence time, pressure, solid-to-liquid ratio, and addition of additives on P conversion pathways has been investigated by a critical discussion of the results published in the literature. Results show that temperature is the most influential parameter for P speciation and repartition: the increase in temperature appears to promote the increase in solid P recovery yield, the mineralization of organic P, and the conversion of non-apatitic P into apatitic P. The increase in reaction time has similar effects as temperature, but to a lesser extent. Solid P recovery yield and apatitic P fraction can be enhanced by increasing the medium alkalinity and by adding Ca-containing reactants. Non-apatitic P fraction can be increased by lower medium alkalinity, and by the addition of Fe-and Alcontaining reactants. The results of this review provide to researchers and practitioners in the field of sewage sludge management key elements for the best operation of hydrothermal reactors to improve the recovery of P and biofuels. Finally, some new research perspectives and technical challenges are proposed to improve the knowledge and the scaling up of the technology.
Antonello Tangredi, Cristian Barca, Jean-Henry Ferrasse, Olivier Boutin. Effect of process parameters on phosphorus conversion pathways during hydrothermal treatment of sewage sludge: A review. Chemical Engineering Journal, 2023, 463, pp.142342. ⟨10.1016/j.cej.2023.142342⟩. ⟨hal-04303018⟩
Shumet Sharew, Ludovic Montastruc, Abubeker Yimam, Stéphane Negny, Jean-Henry Ferrasse. Alternative Energy Potential and Conversion Efficiency of Biomass into Target Biofuels: A Case Study in Ethiopian Sugar Industry- Wonji-Shoa. Biomass, 2022, 2 (4), pp.279-298. ⟨10.3390/biomass2040019⟩. ⟨hal-03936793⟩ Plus de détails...
Global energy security relies on fossil-based resources that are affiliated with the source of global warming, apart from punches of political and economic instabilities. Biomass is a promising alternative carbonaceous feedstock used for the production of clean energy that could have the potential to substitute for fossil fuels. This study aims to present a conceptual design that considers the criteria to identify the upper theoretical limits of biomass conversion, thus providing the potential approach to the conversion of three biomass (by-products: dry molasses, dry bagasse, and dry filter cake) through gasification, in order to contribute the biomass carbon-capturing by the model assessment of stoichiometric mass conversion and energy efficiency indicators into simple thermodynamic energy vectors, such as alcohols, alkanes, and syngas (a mixture of carbon monoxide and hydrogen). Modeling plays up the importance of stoichiometric efficiency of biomass conversion with the supply of oxygen and hydrogen. This realizes that the multi-product diversification of feedstock into syngas, hydrocarbons, and alcohol through integrated process schemes could have the potential to fill the energy gap and help to manage environmental load. In regard to biomass conversion results, the mass conversion and energy conversion efficiencies of dry bagasse have better conversion potential than molasses and F. cake (% mass conversion = 129 in syngas, 54.4 in alkane, and 43.4 in alcohol; % energy conversion = 94.3 in syngas and 93.3 in alkane and alcohol).
Shumet Sharew, Ludovic Montastruc, Abubeker Yimam, Stéphane Negny, Jean-Henry Ferrasse. Alternative Energy Potential and Conversion Efficiency of Biomass into Target Biofuels: A Case Study in Ethiopian Sugar Industry- Wonji-Shoa. Biomass, 2022, 2 (4), pp.279-298. ⟨10.3390/biomass2040019⟩. ⟨hal-03936793⟩
Jean-Henry Ferrasse, Nandeeta Neerunjun, Hubert Stahn. Intermittency and electricity retailing: An incomplete market approach. Mathematical Social Sciences, 2022, 120, pp.24-36. ⟨10.1016/j.mathsocsci.2022.09.001⟩. ⟨hal-03979827⟩ Plus de détails...
We analyze the integration of intermittent renewables-based technologies into an electricity mix comprising of conventional energy. Intermittency is modeled by a contingent electricity market and we introduce demand-side flexibility through the retailing structure. Retailers propose diversified electricity contracts at different prices, but in an insufficient number to cover intermittent production. These delivery contracts are modeled similarly to numeraire assets. We study the competitive equilibrium of the state-contingent wholesale electricity markets and the delivery contract markets. We also provide an analysis linking the delivery contracts to social welfare. Finally, we discuss the conditions under which changing the delivery contracts improve penetration of renewables and increases welfare. These provide useful insights for managing intermittency and achieving renewable capacity objectives.
Jean-Henry Ferrasse, Nandeeta Neerunjun, Hubert Stahn. Intermittency and electricity retailing: An incomplete market approach. Mathematical Social Sciences, 2022, 120, pp.24-36. ⟨10.1016/j.mathsocsci.2022.09.001⟩. ⟨hal-03979827⟩
Valentina Segneri, Jean Henry Ferrasse, Antonio Trinca, Giorgio Vilardi. An Overview of Waste Gasification and Syngas Upgrading Processes. Energies, 2022, 15 (17), pp.6391. ⟨10.3390/en15176391⟩. ⟨hal-03936798v2⟩ Plus de détails...
The increasing attention towards climate change and greenhouse gas emissions makes the exploitation of renewable energy sources one of the key pathways for sustainable power generation or chemical production [...]
Valentina Segneri, Jean Henry Ferrasse, Antonio Trinca, Giorgio Vilardi. An Overview of Waste Gasification and Syngas Upgrading Processes. Energies, 2022, 15 (17), pp.6391. ⟨10.3390/en15176391⟩. ⟨hal-03936798v2⟩
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03597512⟩ Plus de détails...
Thermal energy counts for a large part of the total energy consumption. To reduce fossil fuel consumption for heat and cold generation, different low temperature heat sources have been considered. Water networks have been considered as a large amount of water flow through it. To measure the thermal potential of the system, this paper provides a method in unsteady state to determine water temperature and flow in large water systems made of buried pipes. The model has been applied to a raw water supply system made up of 5000 km of piping and carrying 200 million m3 annually situated in the south of France. Water temperature is calculated considering heat exchange and the spatial specificities of the network (diameter of the pipes, depth, type of soil ...). Soil and water temperature measurements have been made to validate the model values. The model can predict water flow and temperature according to time with good accuracy: maximal error of 10% on the flow is obtained, the root mean square error on the calculated temperature is 0.84 circle C, and the correlation coefficient between the calculated and the measured temperature values is 0.98. The impact of adding several heat (or cold) injections in the system has been evaluated with the model. After a 2 MW heat exchange, the water temperature is increased by at least 1circC for 10 km downstream the exchange.
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03597512⟩
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters. Chemical Engineering Research and Design, 2021, 173, pp.108-118. ⟨10.1016/j.cherd.2021.07.003⟩. ⟨hal-03515133⟩ Plus de détails...
The design of bubble column for industrial applications is well known under near ambient pressure and temperature conditions, contrary to high pressure and temperature conditions. Accurate data on the evolution and behaviour of the bubbles is proposed as a basis for the evaluation of the surface area developed in the column and further design of such reactor. Two columns are used for the experiments: a small column (8 mL) with a total visualisation of the flow, and a bigger one (1 L), necessary for the scale up. Main results show that the influence of pressure and temperature are significant on the behaviour of bubbles and bubble size distribution and must be characterized and considered for the design of the columns in such conditions. The results allow the determination of two correlations: one for the bubble diameter and the other one for the bubble rise velocity, considering different parameters, and especially the superficial gas velocity in saturated conditions. These correlations are a basis to determine mass transfer correlations for the design of bubble column at high pressure and temperature conditions. (c) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters. Chemical Engineering Research and Design, 2021, 173, pp.108-118. ⟨10.1016/j.cherd.2021.07.003⟩. ⟨hal-03515133⟩
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03515146⟩ Plus de détails...
Thermal energy counts for a large part of the total energy consumption. To reduce fossil fuel consumption for heat and cold generation, different low temperature heat sources have been considered. Water networks have been considered as a large amount of water flow through it. To measure the thermal potential of the system, this paper provides a method in unsteady state to determine water temperature and flow in large water systems made of buried pipes. The model has been applied to a raw water supply system made up of 5000 km of piping and carrying 200 million m3 annually situated in the south of France. Water temperature is calculated considering heat exchange and the spatial specificities of the network (diameter of the pipes, depth, type of soil ...). Soil and water temperature measurements have been made to validate the model values. The model can predict water flow and temperature according to time with good accuracy: maximal error of 10% on the flow is obtained, the root mean square error on the calculated temperature is 0.84 circle C, and the correlation coefficient between the calculated and the measured temperature values is 0.98. The impact of adding several heat (or cold) injections in the system has been evaluated with the model. After a 2 MW heat exchange, the water temperature is increased by at least 1circC for 10 km downstream the exchange.
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03515146⟩
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters. Chemical Engineering Research and Design, 2021, 173, pp.108-118. ⟨10.1016/j.cherd.2021.07.003⟩. ⟨hal-03597596⟩ Plus de détails...
The design of bubble column for industrial applications is well known under near ambient pressure and temperature conditions, contrary to high pressure and temperature conditions. Accurate data on the evolution and behaviour of the bubbles is proposed as a basis for the evaluation of the surface area developed in the column and further design of such reactor. Two columns are used for the experiments: a small column (8 mL) with a total visualisation of the flow, and a bigger one (1 L), necessary for the scale up. Main results show that the influence of pressure and temperature are significant on the behaviour of bubbles and bubble size distribution and must be characterized and considered for the design of the columns in such conditions. The results allow the determination of two correlations: one for the bubble diameter and the other one for the bubble rise velocity, considering different parameters, and especially the superficial gas velocity in saturated conditions. These correlations are a basis to determine mass transfer correlations for the design of bubble column at high pressure and temperature conditions. (c) 2021 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Bubble rising velocity and bubble size distribution in columns at high pressure and temperature: From lab scale experiments to design parameters. Chemical Engineering Research and Design, 2021, 173, pp.108-118. ⟨10.1016/j.cherd.2021.07.003⟩. ⟨hal-03597596⟩
Mónica Amado, Cristian Barca, Mario Hernández, Jean-Henry Ferrasse. Evaluation of Energy Recovery Potential by Anaerobic Digestion and Dark Fermentation of Residual Biomass in Colombia. Frontiers in Energy Research, 2021, 9, pp.690161. ⟨10.3389/fenrg.2021.690161⟩. ⟨hal-03515212⟩ Plus de détails...
This study provides the first overview in Colombia on energy recovery potential by anaerobic digestion (AD) and dark fermentation (DF) of three different residual biomasses: coffee mucilage (CFM), cocoa mucilage (CCM), and swine manure (SM). First, AD and DF models were developed based on the ADM1 model. Then, simulated biogas production yields were compared to experimental data to validate the models. The results of comparative simulations indicate that energy recovery potentials from biogas for the different Colombian departments range from 148 to 48,990 toe, according to the local production amounts of CFM, CCM, and SM in 2017. The study provides crucial information that can be used to assess the best design, operation mode, and locations of AD and DF plants in Colombia. The results indicate that biogas production performances and energy recovery yields improve by increasing CFM/SM and/or CCM/SM ratios of the feed, and by increasing organic load from 2 to 26 gCOD∙l$^{−1}$ .
Mónica Amado, Cristian Barca, Mario Hernández, Jean-Henry Ferrasse. Evaluation of Energy Recovery Potential by Anaerobic Digestion and Dark Fermentation of Residual Biomass in Colombia. Frontiers in Energy Research, 2021, 9, pp.690161. ⟨10.3389/fenrg.2021.690161⟩. ⟨hal-03515212⟩
Kelly Ohanessian, Mathias Monnot, Philippe Moulin, Jean-Henry Ferrasse, Cristian Barca, et al.. Dead-end and crossflow ultrafiltration process modelling: Application on chemical mechanical polishing wastewaters. Chemical Engineering Research and Design, 2020, 158, pp.164-176. ⟨10.1016/j.cherd.2020.04.007⟩. ⟨hal-02892457⟩ Plus de détails...
Dynamic simulation of ultrafiltration process is applied to the treatment of chemical mechanical polishing wastewater from microelectronic industry. The ultrafiltration of nanoparticles (NPs) contained in chemical mechanical polishing wastewater is modelled by using different mathematical equations, which are derived from the literature and optimized to the effluent and filtration modes (dead-end or crossflow). A series of ultrafiltration experiments at laboratory scale are carried out by using chemical mechanical polishing wastewater to optimize and validate the models. Complete dead-end and crossflow ultrafiltration models are developed to simulate the treatment performances of chemical mechanical polishing wastewater under dynamic full-scale and different operating conditions, thus including filtration and washing steps. Simulations show that the dead-end mode is not suitable for chemical mechanical polishing wastewater concentration higher than 100 mgNPs L-1 due to the too fast fouling time and to the high frequency of washing step. The high concentration of chemical mechanical polishing P wastewater (2600 mgNPs L-1) forces industries to use crossflow ultrafiltration to have a profitable process by controlling parameters such as the filtration/backwashing number of cycles, the needed filtering surface and the filtration flux.
Kelly Ohanessian, Mathias Monnot, Philippe Moulin, Jean-Henry Ferrasse, Cristian Barca, et al.. Dead-end and crossflow ultrafiltration process modelling: Application on chemical mechanical polishing wastewaters. Chemical Engineering Research and Design, 2020, 158, pp.164-176. ⟨10.1016/j.cherd.2020.04.007⟩. ⟨hal-02892457⟩
Hélène Cervo, Jean-Henry Ferrasse, Bernard Descales, Greet van Eetvelde. Blueprint: A methodology facilitating data exchanges to enhance the detection of industrial symbiosis opportunities – application to a refinery. Chemical Engineering Science, 2020, 211, pp.115254. ⟨10.1016/j.ces.2019.115254⟩. ⟨hal-02319708⟩ Plus de détails...
The European Union (EU) has put the concept of circularity at the heart of its strategy for transitioning towards a low-carbon economy and reducing the use of virgin resources. Concrete measures, such as clarifying rules on co-products or supporting innovative projects, have been taken in order to promote Industrial Symbiosis (IS)-turning one industry's co-product into another industry's raw material. However, one of the main barriers to the democratisation of IS remains the exchange of (confidential) data between industrial partners. Here, the concept of industrial sector blueprints is presented as a solution in order to overcome the challenge of sharing information across industrial sectors. A blueprint is constituted of a series of profiles providing insights on the key inputs and outputs of a given industry in terms of thermal and electrical energy, materials and services. A heuristic and comprehensive methodology is presented detailing a step-by-step approach for building the profiles and the type of data required. It is applied to a typical refinery demonstrating the efficiency of the method and showing how it can be used in an IS context.
Hélène Cervo, Jean-Henry Ferrasse, Bernard Descales, Greet van Eetvelde. Blueprint: A methodology facilitating data exchanges to enhance the detection of industrial symbiosis opportunities – application to a refinery. Chemical Engineering Science, 2020, 211, pp.115254. ⟨10.1016/j.ces.2019.115254⟩. ⟨hal-02319708⟩
Hélène Cervo, Stéphane Ogé, Amtul Samie Maqbool, Francisco Mendez Alva, Lindsay Lessard, et al.. A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology. Sustainability, 2019, 11 (24), pp.6940. ⟨10.3390/su11246940⟩. ⟨hal-02395672⟩ Plus de détails...
For the last 20 years, the field of industrial symbiosis (IS) has raised interest among academics and industries. IS consists of dissimilar entities sharing and valorising underutilised resources such as materials, energy, information, services, or technologies in the view of increasing the industrial system's circularity. Despite the benefits brought by IS, though, barriers hindering the full dissemination of IS remain. This paper presents a methodology developed in the framework of the H2020 European project EPOS that aims at removing some of the obstacles to the implementation of IS. The method follows a multidisciplinary approach that intents to trigger the interest of industry decision-makers and initiate efforts to optimise the use of energy and material resources through symbiosis. It is applied to an industrial cluster located in the Humber region of UK. The case study shows how the approach helped to identify several IS opportunities, how one particular high-potential symbiosis was further assessed, and how it led to the creation of a business case. It was estimated that the identified symbiosis could bring substantial economic (+2000 k€ pa), environmental (−4000 t of CO 2 eq. pa) and social (+7 years of healthy life) gains to the region.
Hélène Cervo, Stéphane Ogé, Amtul Samie Maqbool, Francisco Mendez Alva, Lindsay Lessard, et al.. A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology. Sustainability, 2019, 11 (24), pp.6940. ⟨10.3390/su11246940⟩. ⟨hal-02395672⟩
Ct Nzogo Metoule, S. Delaby, Jean-Henry Ferrasse, Olivier Boutin. Hydrothermal process development for the treatment of crocidolite asbestos waste. Waste Management and Research, 2019, 37 (9), pp.914-924. ⟨10.1177/0734242X19859426⟩. ⟨hal-02450344⟩ Plus de détails...
Ct Nzogo Metoule, S. Delaby, Jean-Henry Ferrasse, Olivier Boutin. Hydrothermal process development for the treatment of crocidolite asbestos waste. Waste Management and Research, 2019, 37 (9), pp.914-924. ⟨10.1177/0734242X19859426⟩. ⟨hal-02450344⟩
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Gas hold up in bubble column at high pressure and high temperature. Chemical Engineering Science, 2019, 200, pp.186-202. ⟨10.1016/j.ces.2019.01.055⟩. ⟨hal-02177058⟩ Plus de détails...
Gas holdup of water/nitrogen, water-phenol/nitrogen and water-phenol/air systems was successfully measured by a method based on the use of a differential pressure sensor installed on a bubble column reactor, in a wide domain of temperature (from 100 to 300 degrees C) and pressure (from 10 to 30 MPa). These experimental conditions are little or no explored in literature. Results show a predominant influence of the superficial gas velocity, the evaporation of the liquid phase, the ratio of the gas volume flowrate on the liquid volume flowrate and the phenol concentration. Pressure and chemical reaction have little effect on gas holdup. The temperature has an effect in the case of phenol solutions. The different correlations and parameters influence determined in this work are very helpful for the design of gas liquid contactors (for instance bubble column) at high pressure and high temperature.
Clément Leonard, Jean-Henry Ferrasse, Sébastien Lefevre, Alain Viand, Olivier Boutin. Gas hold up in bubble column at high pressure and high temperature. Chemical Engineering Science, 2019, 200, pp.186-202. ⟨10.1016/j.ces.2019.01.055⟩. ⟨hal-02177058⟩
Dan Feng, Jean-Henry Ferrasse, Audrey Soric, Olivier Boutin. Bubble characterization and gas–liquid interfacial area in two phase gas–liquid system in bubble column at low Reynolds number and high temperature and pressure. Chemical Engineering Research and Design, 2019, 144, pp.95-106. ⟨10.1016/j.cherd.2019.02.001⟩. ⟨hal-02177001⟩ Plus de détails...
Bubbles hydrodynamic in gas-liquid contactor, including bubble size distribution, bubble size and gas-liquid interfacial area, was evaluated as a function of superficial gas velocity, superficial liquid velocity, temperature, pressure and different gases (N-2 and He) and liquids (water and ethanol/water mixture) phases. The results showed that with the increase of superficial gas velocity, the bubble size distribution shifted from smaller- to larger-size bubble and the Sauter mean diameter, the gas holdup and the interfacial area generally increased due to the increase of coalescence. The effect of superficial liquid velocity on bubble characteristics was not significant. Pressure and temperature showed slight influence on gas holdup and interfacial area. The bubble characteristics were not significantly influenced by the type of gas phase, but mainly affected by the liquid composition. Correlations to predict Sauter mean bubble diameter and the gas holdup are developed using Kanaris correlation and in good agreement with experimental results.
Dan Feng, Jean-Henry Ferrasse, Audrey Soric, Olivier Boutin. Bubble characterization and gas–liquid interfacial area in two phase gas–liquid system in bubble column at low Reynolds number and high temperature and pressure. Chemical Engineering Research and Design, 2019, 144, pp.95-106. ⟨10.1016/j.cherd.2019.02.001⟩. ⟨hal-02177001⟩
Jonathan Goffe, Jean-Henry Ferrasse. Stoichiometry impact on the optimum efficiency of biomass conversion to biofuels. Energy, 2019, 170, pp.438-458. ⟨10.1016/j.energy.2018.12.137⟩. ⟨hal-02900619⟩ Plus de détails...
Biomass has the specific characteristic of being included in a short regeneration cycle that minimizes its ecological impact and should give it a preferential role in the energy transition. The scale up in the deployment of bioenergy requires an objective approach to processes. It is necessary to identify, according to a defined and available biomass, the most appropriate processes and products to extend their deployment This requires deep process analysis to identify achievable optimizations and opportunities of improvement. In order to provide criteria to identify the upper theoretical limits of biomass conversion, a theoretical approach to the conversion of two biomass (lignocellulosic and microalguae) into simple energy vector as alkanes, alcohols, carbon monoxide or hydrogen is carried out. Modelling highlights the importance of stoichiometry in the feasibility and efficiency of biomass conversions. The impact of hydrogen supply and its energy cost in improving conversion efficiency is also underlined. In terms of biomass conversion results, microalgae provide better conversion efficiency than lignocellulosic biomass. For these reactions, an optimal carbon conversion ratio is identified. The optimum conversion ratios are about 36% to 46% for short chains such as methane or methanol and 64% to 75% for long chains. • Stoichiometry plays a major role in the biomass conversion • Optimum limit for biomass conversions are identified for alkanes, alcohols, H 2 and CO production • Hydrogen supply source can improve conversion efficiency • Proposal of a methodology to calculate efficiency for biomass conversion
Jonathan Goffe, Jean-Henry Ferrasse. Stoichiometry impact on the optimum efficiency of biomass conversion to biofuels. Energy, 2019, 170, pp.438-458. ⟨10.1016/j.energy.2018.12.137⟩. ⟨hal-02900619⟩
Clément Leonard, Jean-Henry Ferrasse, Olivier Boutin, Sébastien Lefevre, Alain Viand. Measurements and correlations for gas liquid surface tension at high pressure and high temperature. AIChE Journal, 2018, 64 (11), pp.4110-4117. ⟨10.1002/aic.16216⟩. ⟨hal-02114480⟩ Plus de détails...
Surface tension of water/nitrogen and water-phenol/nitrogen systems was successfully measured by the hanging drop method in a wide domain of temperature (from 100 to 300°C) and pressure (from 4 to 30MPa), conditions little explored literature. Results show that surface tension of water-phenol mixtures decreases as phenol mass fraction increases. This decrease is observed under saturated and unsaturated conditions and is more pronounced at low temperatures and does not seem to depend on pressure. The effect of saturation on surface tension in the water/nitrogen system has been correlated with water vapor pressure by using experimental points with a great accuracy. For the water-phenol/nitrogen system, experimental data obtained with different mass fraction of phenol were correlated using Macleod-Sugden equation for mixtures. Topical heading Reaction Engineering, Kinetics and Catalysis Transport Phenomena and Fluid Mechanics
Clément Leonard, Jean-Henry Ferrasse, Olivier Boutin, Sébastien Lefevre, Alain Viand. Measurements and correlations for gas liquid surface tension at high pressure and high temperature. AIChE Journal, 2018, 64 (11), pp.4110-4117. ⟨10.1002/aic.16216⟩. ⟨hal-02114480⟩
Wirginia Tomczak, Jean-Henry Ferrasse, Marie-Thérèse Giudici-Orticoni, Audrey Soric. Effect of hydraulic retention time on a continuous biohydrogen production in a packed bed biofilm reactor with recirculation flow of the liquid phase. International Journal of Hydrogen Energy, 2018, 43 (41), pp.18883-18895. ⟨10.1016/j.ijhydene.2018.08.094⟩. ⟨hal-02116035⟩ Plus de détails...
The present paper reports on results obtained from experiments carried out in a laboratory-scale anaerobic packed bed biofilm reactor (APBR), with recirculation of the liquid phase, for continuously biohydrogen production via dark fermentation. The reactor was filled with Kaldnes® biofilm carrier and inoculated with an anaerobic mesophilic sludge from a urban wastewater treatment plant (WWTP). The APBR was operated at a temperature of 37 °C, without pH buffering. The effect of theoretical hydraulic retention time (HRT) from 1 to 5 h on hydrogen yield (HY), hydrogen production rate (HPR), substrate conversion and metabolic pathways was investigated. This study indicates the possibility of enhancing hydrogen production by using APBR with recirculation flow. Among respondents values of HRT the highest average values of HY (2.35 mol H2/mol substrate) and HPR (0.085 L h−1L−1) have been obtained at HRT equal to 2 h.
Wirginia Tomczak, Jean-Henry Ferrasse, Marie-Thérèse Giudici-Orticoni, Audrey Soric. Effect of hydraulic retention time on a continuous biohydrogen production in a packed bed biofilm reactor with recirculation flow of the liquid phase. International Journal of Hydrogen Energy, 2018, 43 (41), pp.18883-18895. ⟨10.1016/j.ijhydene.2018.08.094⟩. ⟨hal-02116035⟩
Félicité Ondze, Jean-Henry Ferrasse, Olivier Boutin, Jean-Christophe Ruiz, Frédéric Charton. Process simulation and energetic analysis of different supercritical water gasification systems for the valorisation of biomass. Journal of Supercritical Fluids, 2018, 133, pp.114 - 121. ⟨10.1016/j.supflu.2017.10.002⟩. ⟨hal-02115423⟩ Plus de détails...
The energetic efficiency for the supercritical gasification of biomass is studied for three cases: hydrogen and methane production, heat and electricity cogeneration. Experimental results from the gasification of glucose are used to represent the gasifier. The other unit operations are simulated using the software ProsimPlus through thermodynamic equilibrium calculations. Simulations are conducted at different pressure, temperature and initial biomass concentration. The energetic and exergetic yields are calculated, as well as the minimum heat requirement estimated from a pinch analysis. All the results are then exploited to determine optimal conditions for two systems: adiabatic and isothermal.
Félicité Ondze, Jean-Henry Ferrasse, Olivier Boutin, Jean-Christophe Ruiz, Frédéric Charton. Process simulation and energetic analysis of different supercritical water gasification systems for the valorisation of biomass. Journal of Supercritical Fluids, 2018, 133, pp.114 - 121. ⟨10.1016/j.supflu.2017.10.002⟩. ⟨hal-02115423⟩
The effect of acidic conditions (in a pH range of 3 to 6) and temperature on the kinetics of the hydrothermal oxidation of ferrous iron contained in BOF steel slag has been tested in the 150–350 • C range for acid acetic concentrations from 0 to 4 M. Reaction progress was monitored with the amount of produced H 2. Higher temperature and lower pH are found to enhance the hydrothermal oxidation kinetics of the slag. These two parameters are believed to increase iron dissolution rate which has already been identified as the rate limiting step of the hydrothermal oxidation of pure FeO. An activation energy of 28 ± 4 kJ/mole is found for the hydrothermal oxidation of the steel slag which compares very well with that of pure FeO under similar conditions. In the case of the slag run in water at 300 • C for 70.5 h, magnetite product has been separated magnetically and characterized. Particles were found to fall in three size ranges: 10–30 nm, 100–300 nm, and 1–10 µm. The smallest fraction (10–30 nm) is comparable to the 10–20 nm size range that is achieved when nanomagnetite are synthesized by co-precipitation methods. Obviously, the production of nanomagnetite enhances the economic interest of the hydrothermal processing of steel slags, which has already proven its capacity to produce high-purity H 2 .
Camille Crouzet, Fabrice Brunet, Nadir Recham, Anne-Line Auzende, Nathaniel Findling, et al.. Hydrothermal Steel Slag Valorization—Part II: Hydrogen and Nano-Magnetite Production. Frontiers in Earth Science, 2017, 5, ⟨10.3389/feart.2017.00086⟩. ⟨hal-01678896⟩
Camille Crouzet, Fabrice Brunet, German Montes-Hernandez, Nadir Recham, Nathaniel Findling, et al.. Hydrothermal Valorization of Steel Slags—Part I: Coupled H2 Production and CO2 Mineral Sequestration. Frontiers in Energy Research, 2017, 5, ⟨10.3389/fenrg.2017.00029⟩. ⟨hal-01678886⟩ Plus de détails...
A new process route for the valorization of BOF steel slags combining H2 production and CO2 mineral sequestration is investigated at 300°C (HT) under hydrothermal conditions. A BOF steel slag stored several weeks outdoor on the production site was used as starting material. To serve as a reference, room temperature (RT) carbonation of the same BOF steel slag has been monitored with in situ Raman spectroscopy and by measuring pH and PCO2 on a time-resolved basis. CO2 uptake under RT and HT are, respectively, 243 and 327 kg CO2/t of fresh steel slag, which add up with the 63 kg of atmospheric CO2 per ton already uptaken by the starting steel slag on the storage site. The CO2 gained by the sample at HT is bounded to the carbonation of brownmillerite. H2 yield decreased by about 30% in comparison to the same experiment performed without added CO2, due to sequestration of ferrous iron in a Mg-rich siderite phase. Ferric iron, initially present in brownmillerite, is partitioned between an Fe-rich clay mineral of saponite type and metastable hematite. Saponite is likely stabilized by the presence of Al, whereas hematite may represent a metastable product of brown-millerite carbonation. Mg-rich wüstite is involved in at least two competing reactions, i.e., oxidation into magnetite and carbonation into siderite. Results of both water-slag and water-CO2-slag experiments after 72 h are consistent with a kinetics enhancement of the former reaction when a CO2 partial pressure imposes a pH between 5 and 6. Three possible valorization routes, (1) RT carbonation prior to hydrothermal oxidation, (2) RT carbonation after hydrothermal treatment, and (3) combined HT carbonation and oxidation are discussed in light of the present results and literature data.
Camille Crouzet, Fabrice Brunet, German Montes-Hernandez, Nadir Recham, Nathaniel Findling, et al.. Hydrothermal Valorization of Steel Slags—Part I: Coupled H2 Production and CO2 Mineral Sequestration. Frontiers in Energy Research, 2017, 5, ⟨10.3389/fenrg.2017.00029⟩. ⟨hal-01678886⟩
Djida Tafoukt, Audrey Soric, Jean-Claude J.-C. Sigoillot, Jean-Henry Ferrasse. Determination of kinetics and heat of hydrolysis for non homogenous substrate by isothermal calorimetry. Bioprocess and Biosystems Engineering, 2017, 40 (4), pp.1-8. ⟨10.1007/s00449-016-1728-0⟩. ⟨hal-01468071⟩ Plus de détails...
The competitiveness of the second-generation bioethanol by biotechnological process requires an effective and quantitative control of biochemical reactions. In this study, the potential of isothermal calorimetry technique to measure heat and kinetics of a non-homogeneous substrate enzymatic hydrolysis is intended. Using this technique, optimum temperature of the enzymes used for lignocellulosic molecules hydrolysis was determined. Thus, the amount of substrate-to-enzyme ratio was highlighted as an important parameter of the hydrolysis yield. Furthermore, a new enzymes' cocktail efficiency consisting of a mix of cellulases and cellobiose dehydrogenase (CDH) was qualified by this technique. The results showed that this cocktail allowed the production of a high amount of gluconic acid that could improve the attractiveness of these second-generation biofuels. From the set of experiments, the hydrolysis heat of wheat straw was derived and a meaningful value of -32.2 +/- 3.2 J g(-1) (gram reducing sugars product) is calculated. Then, isothermal measurements were used to determine kinetic constants of the cellulases and CDH mix on wheat straw. Results showed that this enzyme cocktail has an optimal rate at 45 A degrees C in the range of temperatures tested (40-55 A degrees C).
Djida Tafoukt, Audrey Soric, Jean-Claude J.-C. Sigoillot, Jean-Henry Ferrasse. Determination of kinetics and heat of hydrolysis for non homogenous substrate by isothermal calorimetry. Bioprocess and Biosystems Engineering, 2017, 40 (4), pp.1-8. ⟨10.1007/s00449-016-1728-0⟩. ⟨hal-01468071⟩
Jean-Charles de Hemptinne, Jean-Henry Ferrasse, A. Gorak, Signe Kjelstrup, F. Maréchal, et al.. Energy efficiency as an example of cross-discipline collaboration in chemical engineering. Chemical Engineering Research and Design, 2017, 119, pp. 183-187. ⟨10.1016/j.cherd.2017.01.020⟩. ⟨hal-01519871⟩ Plus de détails...
This paper summarizes the round-table discussion that was held during the EuropeanCongress of Chemical Engineering (ECCE) in Nice, France, in October 2015 on this topic.The panellists come from different fields of chemical engineering and have thus broughtin different perspectives. The objective was to determine paths for developing innovativeapproaches in view of process optimization.The terminology is a first obstacle that was clarified. Energy efficiency can be envisagedeither by optimizing thermodynamic functions (entropy or exergy), more pragmatically byselecting the adequate unit operation or in a very general vision by considering all decisionvariables (i.e. including economic and political) that may have an impact on the final serviceprovided to society.The second issue relates to improving collaboration among various actors. These may bedefined in terms of type of responsibility (industrials, mostly market-driven, or academic),or in terms of discipline. The role of professional societies as the European Federation forChemical Engineers (EFCE) is stressed as a promotor of collaboration between disciplines.Finally, once willingness for collaboration is identified, the final question is how it can leadto true innovation. The largest innovation potential is often found at the interface betweenfields. Yet, it often requires both an effort to explain the mutual challenges in a didacticmanner, and the development of tools that make it possible to each partner to be efficientin his own field while being aware of the global goal and of the constraints of the others.
Jean-Charles de Hemptinne, Jean-Henry Ferrasse, A. Gorak, Signe Kjelstrup, F. Maréchal, et al.. Energy efficiency as an example of cross-discipline collaboration in chemical engineering. Chemical Engineering Research and Design, 2017, 119, pp. 183-187. ⟨10.1016/j.cherd.2017.01.020⟩. ⟨hal-01519871⟩
Cristian Barca, David Ranava, Marielle Bauzan, Jean-Henry Ferrasse, Marie-Thérèse Giudici-Orticoni, et al.. Fermentative hydrogen production in an up-flow anaerobic biofilm reactor inoculated with a co-culture of Clostridium acetobutylicum and Desulfovibrio vulgaris. Bioresource Technology, 2016, Bioresource Technology, 221, pp.Pages 526-533. ⟨10.1016/j.biortech.2016.09.072⟩. ⟨hal-01415833⟩ Plus de détails...
Dark fermentation systems often show low H2 yields and unstable H2 production, as the result of the variability of microbial dynamics and metabolic pathways. Recent batch investigations have demonstrated that an artificial consortium of two anaerobic bacteria, Clostridium acetobutylicum and Desulfovibrio vulgaris Hildenborough, may redirect metabolic fluxes and improve H2 yields. This study aimed at evaluating the scale-up from batch to continuous H2 production in an up-flow anaerobic packed-bed reactor (APBR) continuously fed with a glucose-medium. The effects of various parameters, including void hydraulic retention time (HRTv), pH, and alkalinity, on H2 production performances and metabolic pathways were investigated. The results demonstrated that a stable H2 production was reached after 3–4 days of operation. H2 production rates increased significantly with decreasing HRTv from 4 to 2 h. Instead, H2 yields remained almost stable despite the change in HRTv, indicating that the decrease in HRTv did not affect the global metabolism.
Cristian Barca, David Ranava, Marielle Bauzan, Jean-Henry Ferrasse, Marie-Thérèse Giudici-Orticoni, et al.. Fermentative hydrogen production in an up-flow anaerobic biofilm reactor inoculated with a co-culture of Clostridium acetobutylicum and Desulfovibrio vulgaris. Bioresource Technology, 2016, Bioresource Technology, 221, pp.Pages 526-533. ⟨10.1016/j.biortech.2016.09.072⟩. ⟨hal-01415833⟩
Olivier Fabbris, Saied Dardour, Patrick Blaise, Jean-Henry Ferrasse, Manuel Saez. Surrogates based multi-criteria predesign methodology of Sodium-cooled Fast Reactor cores - Application to CFV-like cores. Nuclear Engineering and Design, 2016, 305, pp.314-333. ⟨10.1016/j.nucengdes.2016.05.021⟩. ⟨hal-01461795⟩ Plus de détails...
The Sodium-cooled Fast Reactor (SFR) core predesign process is commonly realized on the basis of expert advices and local parametric studies. As such, in-deep knowledge of physical phenomena avoids an important number of expensive simulations. However, the study space is explored only partially. To ease the computational burden metamodels, or surrogate models, can be used, to quickly evaluate the performances of a wide set of different cores, individually defined by a set of parameters (pellet diameter, fissile height...), in the study space. This paper presents the development of a simplified neutronics ERANOS reference core calculation scheme that is then implemented in the construction of the Design of Experiment (DOE) database. The surrogate models for SFR CFV-like cores performances are developed, biases and uncertainties are quantified against the CFV-v1 version. Global Sensitivity Analysis also allowed highlighting antagonist performances for the design and to propose two alternative core configurations. A broadened application of the method with an optimization of a CFV-like core is also detailed. The Pareto front of the seven selected performance parameters has been studied using eleven surrogate models, based on Artificial Neural Network (ANN). The optimization demonstrates that the CFV-v1, designed using Best Estimate codes, under given performance constraints, is Pareto optimal: no other configuration is highlighted from the Multi-Objective Optimization (MOO) study. Further MOO analysis, including a specific study on impact of new degrees of freedom, such as five Pu enrichments compared to two, or different pellet diameters have been performed. Additional configurations are then found by the surrogate models, improving simultaneously all performances of the CFV-v1 configuration. (C) 2016 Elsevier B.V. All rights reserved.
Olivier Fabbris, Saied Dardour, Patrick Blaise, Jean-Henry Ferrasse, Manuel Saez. Surrogates based multi-criteria predesign methodology of Sodium-cooled Fast Reactor cores - Application to CFV-like cores. Nuclear Engineering and Design, 2016, 305, pp.314-333. ⟨10.1016/j.nucengdes.2016.05.021⟩. ⟨hal-01461795⟩
Salah Akkache, Ana-Belen Hernandez, Gabriel Teixeira, Franck Gelix, Nicolas Roche, et al.. Co-gasification of wastewater sludge and different feedstock: Feasibility study. Biomass and Bioenergy, 2016, 89, pp.201 - 209. ⟨10.1016/j.biombioe.2016.03.003⟩. ⟨hal-01458422⟩ Plus de détails...
Gasification experiments were performed for several feedstocks alone (wastewater sludge, waste wood, reeds, olive pomace, solid recovered fuel, paper labels and plastic labels) using a fixed bed reactor operating in semi-batch conditions. In order to combine them in an optimal gasifying blend, the gasification behavior of each feedstock was compared with that of wastewater sludge through the following criteria: the raw feedstock proximate and ultimate composition, the solid conversion, the gas heating value, the pollutants release and the ashes melting. Operated alone, the conversion rate of the feedstocks after 58 min of solid residence time was over 77% of initial mass. The Syngas low heating value produced at 1123 K was in the range of 9.0 to 11.9 MJ m À3. The major concerns regarding the wastewater sludge were the pollutants precursors' release (NH 3 , COS…) and the ash slagging and fouling. The calculated slagging and fouling indexes were high also for olive pomace and for waste wood. Finally, among the possible blends studied the paper labels and plastic labels can be co-gasified with secondary and digested wastewater sludge without any restriction, reeds and solid recovered fuel can be blinded with secondary wastewater sludge without any restriction, a specific attention have to be taken to fouling when they are blended with digested wastewater sludge. The blend based on waste wood and olives pomace should be avoided for instance due to their ash slagging and fouling tendency.
Salah Akkache, Ana-Belen Hernandez, Gabriel Teixeira, Franck Gelix, Nicolas Roche, et al.. Co-gasification of wastewater sludge and different feedstock: Feasibility study. Biomass and Bioenergy, 2016, 89, pp.201 - 209. ⟨10.1016/j.biombioe.2016.03.003⟩. ⟨hal-01458422⟩
Camille Crouzet, Fabrice Brunet, Nadir Recham, N. Findling, M Lanson, et al.. Hydrogen production by hydrothermal oxidation of FeO under acidic conditions
. International Journal of Hydrogen Energy, 2016, 42 (2), pp.795-806. ⟨10.1016/j.ijhydene.2016.10.019⟩. ⟨hal-01468080⟩ Plus de détails...
He production of H2 by oxidation of FeO, taken here as model compound for steel slags, has been investigated both in pure water and under acidic aqueous conditions in the 373–573 K temperature range. Whereas after 65 h, H2 yield was negligible in pure water at 423 K, the reaction 3 FeO(s) + H2O(l) → Fe3O4(s) + H2(aq) reached near completion at the same temperature within 10 h in a solution containing 0.05 mol/l acetic acid. Increasing acetic acid concentration by one order of magnitude did not yield significantly more H2. At identical initial pH, acetic acid was found to be more efficient than oxalic acid and hydrochloric acid at enhancing H2 production. Acidic conditions increased FeO dissolution kinetics and, consequently, improved H2 yield. The specific efficiency of acetic acid resides in its thermal stability as well as in the potential of ligand-promoted Fe(II) dissolution. We show that the positive kinetics effect of mild acetic acid solutions over H2 yield evidenced on FeO does not apply directly to steel slags which buffer the pH to high values due to the presence of large amounts of CaO.
Camille Crouzet, Fabrice Brunet, Nadir Recham, N. Findling, M Lanson, et al.. Hydrogen production by hydrothermal oxidation of FeO under acidic conditions
. International Journal of Hydrogen Energy, 2016, 42 (2), pp.795-806. ⟨10.1016/j.ijhydene.2016.10.019⟩. ⟨hal-01468080⟩
Hong-Son Pham, Nicolas Alpy, S. Mensah, Mark Tothill, Jean-Henry Ferrasse, et al.. A numerical study of cavitation and bubble dynamics in liquid CO2 near the critical point. International Journal of Heat and Mass Transfer, 2016, 102, pp.174-185. ⟨10.1016/j.ijheatmasstransfer.2016.06.005⟩. ⟨hal-01461785⟩ Plus de détails...
This study aims to provide insights into the cavitation and bubble dynamics in liquid CO2 near the critical point. It is inspired by a previous work that reports the absence of dysfunctional behavior during the operation of a test compressor in the two-phase region of CO2. First, several characteristic parameters in the literature have suggested that thermal effects have significant impact on the dynamics of a CO2 bubble. These effects lead to the change of vapor pressure inside the bubble, impeding the motion of the bubble interface. As a consequence, the CO2 bubble collapse should feature a slow contraction of the bubble interface and the absence of noticeable pressure rise. In addition, a dynamic model has been proposed to quantitatively study the bubble collapse in liquid CO2 near the critical point. Simulation results have confirmed the qualitative prediction given by characteristic parameters. They have also revealed that the thermal layer inside the bubble has an important contribution to the bubble dynamics, in addition to the one outside the bubble, by altering the rate of phase change at the interface. These predicted results appear to be in line with the aforementioned experimental observations.
Hong-Son Pham, Nicolas Alpy, S. Mensah, Mark Tothill, Jean-Henry Ferrasse, et al.. A numerical study of cavitation and bubble dynamics in liquid CO2 near the critical point. International Journal of Heat and Mass Transfer, 2016, 102, pp.174-185. ⟨10.1016/j.ijheatmasstransfer.2016.06.005⟩. ⟨hal-01461785⟩
Journal: International Journal of Heat and Mass Transfer
Hong-Son Pham, Nicolas Alpy, Jean-Henry Ferrasse, Olivier Boutin, Mark Tothill, et al.. An approach for establishing the performance maps of the sc-CO2 compressor: Development and qualification by means of CFD simulations. International Journal of Heat and Fluid Flow, 2016, 61 (Part B), pp.379-394. ⟨10.1016/j.ijheatfluidflow.2016.05.017⟩. ⟨hal-01461787⟩ Plus de détails...
One of the challenges in the performance prediction of the supercritical CO2 (sc-CO2) compressor is the real gas behavior of the working fluid near the critical point. This study deals with the establishment of an approach that allows coping with this particularity by dressing compressor performance maps in adequate reduced coordinates (i.e., suitable dimensionless speed and flow parameters inputs and pressure ratio and enthalpy rise outputs), while using CFD for its validation. Two centrifugal compressor designs have been considered in this work. The first one corresponds to a 6 kW small scale component implemented in a test loop at Tokyo Institute of Technology. The second one corresponds to a 38 MW scale 1:1 design considered at an early stage of a project that investigates sc-CO2 cycle for a Small Modular Reactor application. Numerical results on the former have been successfully confronted with the experimental data to qualify the ability of CFD to provide a performance database. Results on the latter have revealed a significant decrease in the static temperature and pressure during flow acceleration along the leading edge of the impeller blades. In this line, the increased risk of vapor pockets appearance inside a sc-CO2 compressor has been highlighted and recommendations regarding the choice of the on-design inlet conditions and the compressor design have been given to overcome this concern. CFD results on the scale 1:1 compressor have then been used to evaluate the relevancy of some previous performance maps approaches for a sc-CO2 compressor application. These include the conventional approach for ideal gas and its derivation, as well as a reference approach from the literature that was previously applied to model a sc-CO2 test compressor. As the dimensionless parameters of these approaches are found to yield discrepancies on the compressor performance, a revised approach that incorporates real gas formulations into turbomachinery key similarity parameters has been finally proposed. In support, an extensive number of CFD case studies has been carried out at various compressor inlet conditions, providing numerical results for its qualification. Accordingly, the proposed approach has been found to succeed in consistently representing and accurately predicting the sc-CO2 compressor performance over a wide operating range.
Hong-Son Pham, Nicolas Alpy, Jean-Henry Ferrasse, Olivier Boutin, Mark Tothill, et al.. An approach for establishing the performance maps of the sc-CO2 compressor: Development and qualification by means of CFD simulations. International Journal of Heat and Fluid Flow, 2016, 61 (Part B), pp.379-394. ⟨10.1016/j.ijheatfluidflow.2016.05.017⟩. ⟨hal-01461787⟩
Journal: International Journal of Heat and Fluid Flow
Clément Leonard, Jean-Henry Ferrasse, Olivier Boutin, Sébastien Lefevre, Alain Viand. Bubble column reactors for high pressures and high temperatures operation. Chemical Engineering Research and Design, 2015, 100, pp.391-421. ⟨10.1016/j.cherd.2015.05.013⟩. ⟨hal-04348574⟩ Plus de détails...
Bubble column reactors are multiphase contactors based on the dispersion of a gas phase in the form of bubbles inside a cylindrical vessel where a liquid or a suspension circulates. Those reactors present many advantages such as good heat and mass transfer rates, no moving parts, compactness, easy operating and low maintenance and operating costs. Their main drawback is the significant backmixing which can affect selectivity and conversion of reaction products. They have gained particular attention in the field of wastewater treatment for Wet Air Oxidation (WAO) processes application. Those processes are operated at high pressures (up to 30 MPa) and temperatures (up to 573 K). In order to efficiently operate those processes, conversion, heat and mass transfer must be optimised. Those parameters depend themselves on operating conditions such as pressure, temperature, superficial gas and liquid velocities and on design parameters such as sparger and column design. This review is aimed to find the relevant parameters for operating bubble column at high pressures and temperatures in continuous mode. The main mechanisms governing the bubble column will be described. The influence of the different parameters on gas holdup, mass transfer properties and on liquid axial dispersion coefficient will be extensively studied.
Clément Leonard, Jean-Henry Ferrasse, Olivier Boutin, Sébastien Lefevre, Alain Viand. Bubble column reactors for high pressures and high temperatures operation. Chemical Engineering Research and Design, 2015, 100, pp.391-421. ⟨10.1016/j.cherd.2015.05.013⟩. ⟨hal-04348574⟩
Hong-Son Pham, Nicolas Alpy, Jean-Henry Ferrasse, Olivier Boutin, J. Quenaut, et al.. Mapping of the thermodynamic performance of the supercritical CO2 cycle and optimisation for a small modular reactor and a sodium-cooled fast reactor. Energy, 2015, 87, pp.412-424. ⟨10.1016/j.energy.2015.05.022⟩. ⟨hal-01297663⟩ Plus de détails...
The supercritical CO2 (sc-CO2) cycle is being promoted worldwide by many R&D energy organisations and companies as an alternative to the Rankine steam cycle for its capacity to deliver high performance, simple and compact power conversion systems. The past decade has seen an extensive number of published studies carried out in view of analysing the advantages of this cycle for various applications, from nuclear to solar energies. In that context, this work first reports a mapping of the thermodynamic performance of different sc-CO2 cycle configurations that encompass a 250–850°C TIT (turbine inlet temperature) range. The main compressor inlet temperature was chosen to be 35°C to accommodate various heat-sink temperatures while the maximum pressure was parameterised at 20 MPa and at 25 MPa. These charts are seen to provide a preliminary engineering guideline to the maximum performance that one can expect from a sc-CO2 cycle coupled to a specific application. Additionally, they illustrate the effect of the interlinked constraints in terms of optimal recuperation power and IHX (Intermediate Heat eXchanger) inlet temperature. Following this generic study, two typical nuclear applications have been investigated with the support of an exergy analysis. A SMR (small modular reactor) featuring a current generation Pressurized Water Reactor has been chosen as an example of a low temperature range case. Parametric studies of a recompression cycle featuring a TIT of 275°C have guided investigations regarding optimal operating conditions depending on a balance between cycle efficiency, recuperation power, and main compressor operation margin with respect to the critical point. Options for performance improvement such as reheat and condensing mode operation have been investigated for a maximum cycle pressure of 20 MPa. Thermal efficiencies of 29.3% and 28.6% respectively are reported for these two cases. This is in contrast to 27.1% for the initial recompression cycle design. Even though the penalty when compared to a Rankine steam cycle is significant, the sc-CO2 cycle in condensing mode is viewed as an interesting option thanks to its system simplicity and footprint saving. Moving to a higher temperature range, the sc-CO2 cycle has been studied at a TIT of 515°C for a test case application to a SFR (sodium-cooled fast reactor). The recompression cycle operating at a compressor inlet temperature of 35°C provides a maximum efficiency of 43.9% and features an optimal IHX inlet temperature of 347.8°C. However the considered application requires that this temperature should be kept below 330°C. Work has been carried out to optimise the cycle with regard to this specific constraint through several options including the modification of the operating conditions and the investigation of other cycle configurations. The recompression cycle in condensing mode is finally identified as the most interesting one since it achieves an efficiency of 45.7% and features an optimal IHX inlet temperature of 328.6°C.
Hong-Son Pham, Nicolas Alpy, Jean-Henry Ferrasse, Olivier Boutin, J. Quenaut, et al.. Mapping of the thermodynamic performance of the supercritical CO2 cycle and optimisation for a small modular reactor and a sodium-cooled fast reactor. Energy, 2015, 87, pp.412-424. ⟨10.1016/j.energy.2015.05.022⟩. ⟨hal-01297663⟩
Cristian Barca, Audrey Soric, David Ranava, Marie-Thérèse Giudici-Orticoni, Jean-Henry Ferrasse. Anaerobic biofilm reactors for dark fermentative hydrogen production from wastewater: A review. Bioresource Technology, 2015, 185, pp.386 - 398. ⟨10.1016/j.biortech.2015.02.063⟩. ⟨hal-01446104⟩ Plus de détails...
Dark fermentation is a bioprocess driven by anaerobic bacteria that can produce hydrogen (H2) from organic waste and wastewater. This review analyses a relevant number of recent studies that have investigated dark fermentative H2 production from wastewater using two different types of anaerobic biofilm reactors: anaerobic packed bed reactor (APBR) and anaerobic fluidized bed reactor (AFBR). The effect of various parameters, including temperature, pH, carrier material, inoculum pretreatment, hydraulic retention time, substrate type and concentration, on reactor performances was investigated by a critical discussion of the results published in the literature. Also, this review presents an in-depth study on the influence of the main operating parameters on the metabolic pathways. The aim of this review is to provide to researchers and practitioners in the field of H2 production key elements for the best operation of the reactors. Finally, some perspectives and technical challenges to improve H2 production were proposed.
Cristian Barca, Audrey Soric, David Ranava, Marie-Thérèse Giudici-Orticoni, Jean-Henry Ferrasse. Anaerobic biofilm reactors for dark fermentative hydrogen production from wastewater: A review. Bioresource Technology, 2015, 185, pp.386 - 398. ⟨10.1016/j.biortech.2015.02.063⟩. ⟨hal-01446104⟩
Félicité Ondze, Olivier Boutin, Jean-Christophe Ruiz, Jean-Henry Ferrasse, Frédéric Charton. Supercritical water gasification of beet residues: From batch to continuous reactor. Chemical Engineering Science, 2015, 123, pp.350-358. ⟨10.1016/j.ces.2014.11.026⟩. ⟨hal-01297667⟩ Plus de détails...
A residue obtained after the distillation of agricultural alcohol called beet residues is gasified in supercritical water to form a mixture of fuel gas. A parametric study and thermodynamic calculations are first proposed in batch reactor. The results show a significant effect of temperature on the overall mass yields. Gasification efficiencies range from 0.60 to 0.90 g g−1 when temperature increases from 450 to 600 °C. The gas low heating value increases under these conditions from 7.4 to 13.2 MJ kg−1 of initial dry feedstock. After that, a continuous system designed for hydrothermal oxidation processes has been used. For supercritical water gasification, the reduction of total organic carbon in the liquid effluent output presents a little variation, between 59 and 69%, when the operating conditions are changed. To increase the reaction temperature, supercritical water partial oxidation has been conducted. The highest carbon gasification yield is obtained for the highest equivalent molar ratio, indicating a great interest of partial oxidation. Moreover, the results indicate that this process configuration accepts biomass flow variations without influencing the global efficiency.
Félicité Ondze, Olivier Boutin, Jean-Christophe Ruiz, Jean-Henry Ferrasse, Frédéric Charton. Supercritical water gasification of beet residues: From batch to continuous reactor. Chemical Engineering Science, 2015, 123, pp.350-358. ⟨10.1016/j.ces.2014.11.026⟩. ⟨hal-01297667⟩
Doassans-Carrère Nicolas, Jean-Henry Ferrasse, Olivier Boutin, Guillain Mauviel, Jacques Lédé. Comparative study of biomass fast pyrolysis and direct liquefaction for bio-oils production: Products yield and
characterizations. Energy & Fuels, 2014, 28, pp.5103-5111. ⟨10.1021/ef500641c⟩. ⟨hal-01232013⟩ Plus de détails...
The objective of this work is to compare two biomass-to-oil processes: fast pyrolysis and direct liquefaction, using the same biomass (beech sawdust). Fast pyrolysis is conducted in a cyclone reactor (wall temperature between 870 and 1040 K) and direct liquefaction in a 150-mL-autoclave reactor (bulk temperature between 420 and 600 K). Three fractions of pyro-oil are obtained from fast pyrolysis (heavy oil, light oil, and aerosol), whereas two fractions of liq-oil (heavy oil and water-soluble organics) are obtained from direct liquefaction. The comparison of both processes is based on the product yields and their characterization (ultimate analysis for solid and oils, oil−water content, gas and oil molecular composition, 1 H NMR for oils). For both processes, there is an optimal temperature at which the oil yield is maximum. Up to 62.6 wt % of pyro-oil are obtained at 970 K with the cyclone reactor (with 25.7 wt % of gas and 11.7 wt % of solid), whereas 47.0 wt % of liq-oil was obtained at 573 K with the batch-reactor (completed by 5.5 wt % of gas and 17.8 wt % of solid). Water content mainly explains the differences (mass yield and oxygen content) between oils from fast pyrolysis and direct liquefaction. Nevertheless, there are also some differences in organic composition: levoglucosane is a main component in pyro-oil, whereas levulinic acid is a main component in liq-oil. Finally, gas formed during direct liquefaction is mainly composed of CO2 (more than 99 wt %), whereas gas from fast pyrolysis is a mixture of CO, CO2, H2, CH4, and light hydrocarbons.
Doassans-Carrère Nicolas, Jean-Henry Ferrasse, Olivier Boutin, Guillain Mauviel, Jacques Lédé. Comparative study of biomass fast pyrolysis and direct liquefaction for bio-oils production: Products yield and
characterizations. Energy & Fuels, 2014, 28, pp.5103-5111. ⟨10.1021/ef500641c⟩. ⟨hal-01232013⟩
Ana Belén Hernandez, Jean-Henry Ferrasse, Nicolas Roche. Limiting the pollutant content in the sewage sludge producer gas through staged gasification. Chemical Engineering and Technology, 2013, 36 (11), pp.1985-1996. ⟨10.1002/ceat.201300103⟩. ⟨hal-00978823⟩ Plus de détails...
Sewage sludge gasification deals with the release of nitrogen and sulfur compounds, the main sources for pollutants during the final combustion. In order to handle these compounds, a staged gasification process is proposed. During the low-temperature thermal treatment of the first stage, nitrogen and sulfur compounds are removed from the solid fuel. The second stage converts the remaining solid into combustible compounds through gasification reactions. The producer gas obtained during this stage is compared to the producer gas of a simple gasification. The presence of pollutant precursors was considerably diminished during the staged experiments. A successful staged gasification may eliminate the need for downstream cleanup and thus limit the energy consumption. This work proves that staged gasification may be the key to obtain energy from waste fuel, limiting the concerns about pollutants.
Ana Belén Hernandez, Jean-Henry Ferrasse, Nicolas Roche. Limiting the pollutant content in the sewage sludge producer gas through staged gasification. Chemical Engineering and Technology, 2013, 36 (11), pp.1985-1996. ⟨10.1002/ceat.201300103⟩. ⟨hal-00978823⟩
Ming Zeng, Audrey Soric, Jean-Henry Ferrasse, Nicolas Roche. Interpreting hydrodynamic behaviour by the model of stirred tanks in series with exchanged zones: preliminary study in lab-scale trickling filters. Environmental Technology, 2013, 34 (18), pp.2571-2578. ⟨10.1080/09593330.2013.781199⟩. ⟨hal-00978807⟩ Plus de détails...
In trickling filters for wastewater treatment, hydrodynamic behaviour is affected by the growth of biofilm on the porous medium. Therefore, modelling hydrodynamic behaviour is necessary and efficient to predict the biodegradation of pollutants. In this study, laboratory-scale trickling filters were filled with two different porous media (glass beads and plastic rings) and were fed by a synthetic substrate in batch mode. Total organic carbon (TOC) of the effluent was measured and retention time distribution (RTD) was determined by injecting NaCl. Results showed that medium had no significant effect on TOC removal rate (around 80% and 60% respectively for batch time of seven and two days). However, regarding the hydrodynamic behaviour, the effective volume ratio and hydraulic efficiency in the glass beads bed increased remarkably from 28% and 18% to 80% and 70%, respectively, with the reduction of dispersion coefficient (from 4.55 to 1.53). Moreover, the short batch time accelerated this change. Conversely, no variation of hydrodynamic behaviour in plastic rings bed was evident. Along with the feeding of synthetic substrate, biofilm concentration ranged from 1.5 to 10.1 g/L in the glass beads reactor and it achieved around 2.8 g/L in the plastic rings reactor. Hydrodynamic modelling indicated that the model of stirred tanks in series with exchanged zones fitted the experimental results well. These gave values of mobile and immobile volumes of 51 mL and 17 mL, respectively, in the glass beads filter and 25 mL and 15 mL, respectively, in the plastic rings filter.
Ming Zeng, Audrey Soric, Jean-Henry Ferrasse, Nicolas Roche. Interpreting hydrodynamic behaviour by the model of stirred tanks in series with exchanged zones: preliminary study in lab-scale trickling filters. Environmental Technology, 2013, 34 (18), pp.2571-2578. ⟨10.1080/09593330.2013.781199⟩. ⟨hal-00978807⟩
Jean-Henry Ferrasse, Sébastien Lefèvre, Rémy Faucherand, Alain Viand, Olivier Boutin. Energetic optimization of wet air oxidation process using experimental design coupled with process simulation. Atomic Energy Review, 2012, 41 (1), pp.175-183. ⟨10.1016/j.energy.2011.09.043⟩. ⟨hal-01297671⟩ Plus de détails...
Wet air oxidation process (WAO) is used for wastewater treatment, especially when it contains high chemical oxygen demand. With non-catalytic processes, temperatures between 200 and 350 °C and pressures between 15 and 30 MPa are generally applied. A method, based on the coupling of simulations and experimental design, is used to compare and optimize two reactors (adiabatic and isotherm), their volume being equal and fixed. The interest of an experimental design approach is to plan simulation and to present results in immediate response surface. Four parameters have been selected; temperature, pressure, chemical oxygen demand, air ratio. After achieving the 25 simulations of the “numerical design”, mass and energy balances were analysed through two energetic values integrated as the design responses: exergetic efficiency and minimum heat required by the process for the functioning. The surface response methodology determines which are the most influencing parameters on design responses. It also shows that temperature of reaction and air ratio are the most influencing parameters. At least elements to calculate the cost of the plant, for both reactors are given. Both reactors allow to get complete degradation of pollutants, but strategy of investment and control are opposite.
Jean-Henry Ferrasse, Sébastien Lefèvre, Rémy Faucherand, Alain Viand, Olivier Boutin. Energetic optimization of wet air oxidation process using experimental design coupled with process simulation. Atomic Energy Review, 2012, 41 (1), pp.175-183. ⟨10.1016/j.energy.2011.09.043⟩. ⟨hal-01297671⟩
Sébastien Lefèvre, Olivier Boutin, Jean-Henry Ferrasse, Laure Malleret, Rémy Faucherand, et al.. Thermodynamic and kinetic study of phenol degradation by a non-catalytic wet air oxidation process. Chemosphere, 2011, 84 (9), pp.1208-1215. ⟨10.1016/j.chemosphere.2011.05.049⟩. ⟨hal-01297674⟩ Plus de détails...
This work is dedicated to an accurate evaluation of thermodynamic and kinetics aspects of phenol degradation using wet air oxidation process. Phenol is a well known polluting molecule and therefore it is important having data of its behaviour during this process. A view cell is used for the experimental study, with an internal volume of 150 mL, able to reach pressures up to 30 MPa and temperatures up to 350 °C. Concerning the thermodynamic phase equilibria, experimental and modelling results are obtained for different binary systems (water/nitrogen, water/air) and ternary system (water/nitrogen/phenol). The best model is the Predictive Soave Redlich Kwong one. This information is necessary to predict the composition of the gas phase during the process. It is also important for an implementation in a process simulation. The second part is dedicated to kinetics evaluation of the degradation of phenol. Different compounds have been detected using GC coupled with a MS. A kinetic scheme is deduced, taking into account the evolution of phenol, hydroquinones, catechol, resorcinol and acetic acid. The kinetic parameters are calculated for this scheme. These data are important to evaluate the evolution of the concentration of the different polluting molecules during the process. A simplified kinetic scheme, which can be easily implemented in a process simulation, is also determined for the direct degradation of phenol into H2O and CO2. The Arrhenius law data obtained for the phenol disappearance are the following: k = 1.8 × 106 ± 3.9 × 105 M−1 s−1 (pre-exponential factor) and Ea = 77 ± 8 kJ mol−1 (activation energy).
Sébastien Lefèvre, Olivier Boutin, Jean-Henry Ferrasse, Laure Malleret, Rémy Faucherand, et al.. Thermodynamic and kinetic study of phenol degradation by a non-catalytic wet air oxidation process. Chemosphere, 2011, 84 (9), pp.1208-1215. ⟨10.1016/j.chemosphere.2011.05.049⟩. ⟨hal-01297674⟩
A. B. Hernandez, Jean-Henry Ferrasse, Perrine Chaurand, Hans Saveyn, Daniel Borschneck, et al.. Mineralogy and leachability of gasified sewage sludge solid residues. Journal of Hazardous Materials, 2011, 191 (1-3), pp.219-227. ⟨10.1016/j.jhazmat.2011.04.070⟩. ⟨hal-00766629⟩ Plus de détails...
Gasification of sewage sludge produces combustible gases as well as tar and a solid residue as by-products. This must be taken into account when determining the optimal thermal conditions for the gasification process. In this study, the influence of temperature, heating atmosphere and residence time on the characteristics of the gasified sewage sludge residues is investigated. ICP-AES analyses reveal that the major chemical elements in the char residues are phosphorus, calcium, iron and silicon. Heavy metals such as copper, zinc, chromium, nickel and lead are also present at relatively high levels - from 50 to more than 1000 mg/kg of dry matter. The major mineral phases' identification - before and after heating as well as their morphology and approximate chemistry (XRD and SEM-EDX) demonstrate that a number of transformations take place during gasification. These are influenced by the reactor's temperature and the oxidative degree of its internal atmosphere. The copper-, zinc- and chromium-bearing phases are studied using chemometric tools, showing that the distribution of those metals among the mineral phases is considerably different. Finally, batch-leaching tests reveal that metals retained in the residue are significantly stabilized after thermal treatment to a higher or lower extent, depending on the thermal conditions applied.
A. B. Hernandez, Jean-Henry Ferrasse, Perrine Chaurand, Hans Saveyn, Daniel Borschneck, et al.. Mineralogy and leachability of gasified sewage sludge solid residues. Journal of Hazardous Materials, 2011, 191 (1-3), pp.219-227. ⟨10.1016/j.jhazmat.2011.04.070⟩. ⟨hal-00766629⟩
Sebastien Lefevre, Jean-Henry Ferrasse, Olivier Boutin, Michelle Sergent, Rémy Faucherand, et al.. Process optimisation using the combination of simulation and experimental design approach: Application to wet air oxidation. Chemical Engineering Research and Design, 2011, 89 (7), pp.1045-1055. ⟨10.1016/j.cherd.2010.12.009⟩. ⟨hal-01292658⟩ Plus de détails...
This study develops a coupling of energetic and experimental design approaches on a given configuration of wet air oxidation process (WAO), applied for wastewater containing a hard chemical oxygen demand (phenol for instance). Taking into account thermodynamic principles and process simulation, the calculation of minimum heat required by the process, exergetic efficiency and work balance is presented. Five parameters are considered: pressure (20–30 MPa); temperature (200–300 °C); chemical oxygen demand (23–143 g l−1); air ratio (1.2–2) and temperature of exiting steam utilities (160–200 °C). Using the surface response method, it appears that initial chemical oxygen demand and temperature are the two parameters that mainly influence the result. With the modelling, good conditions for the functioning of the presented process are the following: pressure of 19.4 MPa, temperature of 283 °C, chemical oxygen demand of 54.9 g l−1, air ratio of 1.7 and vapour temperature of 183 °C.
Sebastien Lefevre, Jean-Henry Ferrasse, Olivier Boutin, Michelle Sergent, Rémy Faucherand, et al.. Process optimisation using the combination of simulation and experimental design approach: Application to wet air oxidation. Chemical Engineering Research and Design, 2011, 89 (7), pp.1045-1055. ⟨10.1016/j.cherd.2010.12.009⟩. ⟨hal-01292658⟩
Audrey Soric, Jean-Henry Ferrasse, Nicolas Roche. Microcalorimetric qualitative analysis of biofilm development in porous media used in wastewater treatment by constructed wetland. Journal of Thermal Analysis and Calorimetry, 2011, 104 (1), pp.113-118. ⟨10.1007/s10973-010-1252-4⟩. ⟨hal-01197444⟩ Plus de détails...
Audrey Soric, Jean-Henry Ferrasse, Nicolas Roche. Microcalorimetric qualitative analysis of biofilm development in porous media used in wastewater treatment by constructed wetland. Journal of Thermal Analysis and Calorimetry, 2011, 104 (1), pp.113-118. ⟨10.1007/s10973-010-1252-4⟩. ⟨hal-01197444⟩
Journal: Journal of Thermal Analysis and Calorimetry
Jean-Henry Ferrasse, C. Dumas, Nicolas Roche. Experimental results and model for N-gas compound production in pure steam gasification for wastewater sewage sludge. Chemical Engineering and Technology, 2011, 34 (1), pp.103-110. ⟨10.1002/ceat.201000328⟩. ⟨hal-01025265⟩ Plus de détails...
Sewage sludge produced in wastewater treatment plants represent a significant portion of waste resulting from human activity and it is important to offer new ways of treatment. Thermal gasification of sludge is a promising thermal treatment, particularly because it can lead to a recovery of energy and a drastic reduction in the initial waste volume. However, it is a subject that has rarely been treated in the literature for sewage sludge. In particular, the nitrogen compounds present in significant quantities in the sewage sludge and their reactions during a thermal gasification step, must necessarily be taken into account. In order to study nitrogen behavior, this paper presents experimental results that are included in a model to predict NH3 emission.
Jean-Henry Ferrasse, C. Dumas, Nicolas Roche. Experimental results and model for N-gas compound production in pure steam gasification for wastewater sewage sludge. Chemical Engineering and Technology, 2011, 34 (1), pp.103-110. ⟨10.1002/ceat.201000328⟩. ⟨hal-01025265⟩
Olivier Boutin, Axel de Nadai, Antonio Garcia Perez, Jean-Henry Ferrasse, Marina Beltran, et al.. Experimental and modelling of supercritical oil extraction from rapeseeds and sunflower seeds. Chemical Engineering Research and Design, 2011, 89 (11), pp.2477-2484. ⟨10.1016/j.cherd.2011.02.032⟩. ⟨hal-01044569⟩ Plus de détails...
The supercritical oil extraction from oleaginous seeds (sunflower and rapeseeds) is presented here through experimental and modelling results. The experimental setup allows an accurate following of the mass of the oil extracted and to derive the experimental influences of pressure, temperature and supercritical CO2 flowrate on the extraction curves. These parameters are very sensitive and highlight the necessity of precise optimisation of experimental conditions. In order to complete the behaviour of supercritical fluids extraction, an improved modelling is proposed. The modelling basic equations are based on others modelling published previously. In this work, the determination of several parameters comes from correlations and the other constants are fitted with all the experimental results. Thus the modelling is more representative and predictive as other ones. The modelling results present a good agreement with the experimental results, and hence it can be used for the dimensioning of some extraction autoclaves.
Olivier Boutin, Axel de Nadai, Antonio Garcia Perez, Jean-Henry Ferrasse, Marina Beltran, et al.. Experimental and modelling of supercritical oil extraction from rapeseeds and sunflower seeds. Chemical Engineering Research and Design, 2011, 89 (11), pp.2477-2484. ⟨10.1016/j.cherd.2011.02.032⟩. ⟨hal-01044569⟩
Samuel Legros, Perrine Chaurand, Jérôme Rose, Armand Masion, Valérie Briois, et al.. Investigation of Copper Speciation in Pig Slurry by a Multitechnique Approach. Environmental Science and Technology, 2010, 44 (18), pp.6926-6932. ⟨10.1021/es101651w⟩. ⟨hal-01426133⟩ Plus de détails...
It is now well-known that copper (Cu) can accumulate on the surface of soils upon which pig slurry has been applied. This is due to the high quantity of Cu in pig slurry resulting from its use as a growth promoter in animal feeds. The mobility and bioavailability of Cu from pig slurry spreading can be better predicted by determining the speciation of this element in addition to its total concentration. The aim of this study was to present a multitechnique approach to investigate Cu speciation in pig slurry. First, size fractionation and chemical characterization of each size fraction were performed to complement results obtained in raw samples. Micro X-ray fluorescence spectroscopy (mu XRF) highlighted the colocalization of Cu and sulfur (S). Finally, X-ray absorption near-edge structure spectroscopy (XANES) showed that Cu speciation in raw pig slurry and size fractions could be described by Cu(2)S and that its oxidation state is Cu(I). In addition, geochemical calculation demonstrated that chalcocite (Cu(2)S) was the major Cu species present under pig slurry lagoon physical-chemical conditions. This Cu speciation in pig slurry may be the main reason for the observed Cu accumulation at the soil surface.
Samuel Legros, Perrine Chaurand, Jérôme Rose, Armand Masion, Valérie Briois, et al.. Investigation of Copper Speciation in Pig Slurry by a Multitechnique Approach. Environmental Science and Technology, 2010, 44 (18), pp.6926-6932. ⟨10.1021/es101651w⟩. ⟨hal-01426133⟩
Yohann Dumont, Patrick Aujollet, Jean-Henry Ferrasse. Use of a heat pump to supply energy to the Iodine-sulphur thermochemical cycle for hydrogen production. International Journal of Chemical Reactor Engineering, 2010, 8 (1), pp.1542-6580. ⟨10.2202/1542-6580.2105⟩. ⟨hal-01024750⟩ Plus de détails...
The hydrogen world consumption should increase significantly to progressively replace hydrocarbons. Due to its high power density, nuclear reactor should take an important place in this production. This paper focuses on the hydrogen production by thermochemical cycle using the heat available at 900°C of a new generation nuclear reactor. The chosen thermochemical cycle for this study is the iodine-sulphur thermochemical cycle water splitting.The process flowsheet under consideration has high total energy consumption. It has also many local energy needs unevenly distributed over a wide temperature range. The raw distribution of this energy gives a hydrogen production efficiency of 14.0%. To improve this, the proposed coupling is built using an energy distribution network with a coolant to meet the safety requirements. In this simple case, the efficiency of hydrogen production comes to 21.9%. By integrating a heat pump into the energy distribution network, the efficiency of production increases to 42.0%. The exergetic efficiency, increases from 59.3% to 85.8%.
Yohann Dumont, Patrick Aujollet, Jean-Henry Ferrasse. Use of a heat pump to supply energy to the Iodine-sulphur thermochemical cycle for hydrogen production. International Journal of Chemical Reactor Engineering, 2010, 8 (1), pp.1542-6580. ⟨10.2202/1542-6580.2105⟩. ⟨hal-01024750⟩
Journal: International Journal of Chemical Reactor Engineering
