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Jean-Henry Ferrasse
Aix Marseille Univ, CNRS, Centrale Marseille, M2P2, Marseille, France

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Journal article
Published: 02 July 2021 in Applied Thermal Engineering
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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∘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.

ACS Style

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, 117261 .

AMA Style

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 ():117261.

Chicago/Turabian Style

Gautier Hypolite; Jean-Henry Ferrasse; Olivier Boutin; Sandrine Del Sole; Jean-François Cloarec. 2021. "Dynamic modeling of water temperature and flow in large water system." Applied Thermal Engineering 196, no. : 117261.

Journal article
Published: 16 January 2020 in Chemical Engineering Science
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The European Union has put the concept of circularity at the heart of its strategy for transitioning towards a low-carbon economy. Measures have been taken in order to promote Industrial Symbiosis (IS). However, one of the main barriers to the dissemination of IS remains the exchange of (confidential) data between industries. This paper presents the concept of industrial sector blueprints as a solution in order to overcome the challenge of sharing information. A blueprint is constituted of a series of profiles providing insights into the key inputs and outputs of a given industry in terms of thermal and electrical energy, materials and services. A methodology, detailing a step-by-step approach for building the profiles and the type of data required, is presented. To demonstrate the feasibility of the methods, it is applied to a typical refinery followed by an example, showing how it can be used in an IS context.

ACS Style

Helene 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 .

AMA Style

Helene 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 ():.

Chicago/Turabian Style

Helene Cervo; Jean-Henry Ferrasse; Bernard Descales; Greet Van Eetvelde. 2020. "Blueprint: A methodology facilitating data exchanges to enhance the detection of industrial symbiosis opportunities – application to a refinery." Chemical Engineering Science 211, no. : .

Journal article
Published: 05 December 2019 in Sustainability
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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 CO2 eq. pa) and social (+7 years of healthy life) gains to the region.

ACS Style

Hélène Cervo; Stéphane Ogé; Amtul Samie Maqbool; Francisco Mendez Alva; Lindsay Lessard; Alexandre Bredimas; Jean-Henry Ferrasse; Greet Van Eetvelde. A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology. Sustainability 2019, 11, 6940 .

AMA Style

Hélène Cervo, Stéphane Ogé, Amtul Samie Maqbool, Francisco Mendez Alva, Lindsay Lessard, Alexandre Bredimas, Jean-Henry Ferrasse, Greet Van Eetvelde. A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology. Sustainability. 2019; 11 (24):6940.

Chicago/Turabian Style

Hélène Cervo; Stéphane Ogé; Amtul Samie Maqbool; Francisco Mendez Alva; Lindsay Lessard; Alexandre Bredimas; Jean-Henry Ferrasse; Greet Van Eetvelde. 2019. "A Case Study of Industrial Symbiosis in the Humber Region Using the EPOS Methodology." Sustainability 11, no. 24: 6940.

Journal article
Published: 09 September 2019 in Nuclear Engineering and Design
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The French Commission for Atomic Energy and Alternative Energy (CEA) in collaboration with its industrial partners develops Sodiumcooled Fast Reactors (SFR) as industrial-scale demonstrators mainly guided by safety and operability objectives. In this paper, a SFR reactor associated to a nitrogen closed Brayton cycle for the Power Conversion System (PCS) is considered. This paper is dedicated to an alternative procedure to control a Loss Of Off-site Power (LOOP). Usually, in case of LOOP, the SFR standard procedure relies on passive Decay Heat Removal (DHR) systems to cool down the primary circuit. In this paper, an alternative solution substitutes the use of the latter by the gas Power Conversion System (PCS). This aims at reducing the delay to reach the cold shutdown state while fulfiling safety criteria dealing with thermal stress issues. The aim of this paper is to study the potential of the alternative sequence to cool down the reactor for a LOOP. It is interesting to integrate the alternative procedure to the reactor operation, in order to improve the reliability of the DHR function, by adding a medium strength safety defence line. Nevertheless, the high level of complexity associated to the gas PCS design makes its qualification as a safety grade system impossible. For this reason, the DHR systems cannot be replaced by the gas PCS and remain the main safety grade systems. The actuator of the sodium temperature regulation of the secondary circuit is chosen thanks to a global sensitivity analysis performed with a metamodel-based methodology. The setting of the controller associated to the TM rotation speed regulation is justified by the study of different proportional-integral-derivative (PID) controllers. A comparison of this alternative sequence with the reference one, based on simulations with the system thermalhydraulic code CATHARE2, is presented in this paper. The study indicates that the passive DHR systems allow the reactor to reach the cold shutdown state only after 24 h, whereas the procedure with the gas PCS required few hours to lead the reactor in this safety state. A Multiobjective Optimisation Problem (MOP) is solved in order to minimize simultaneously the delay to reach the cold shutdown state and the thermal stresses on the main vessel during the alternative procedure. These two objectives are conflicting, thus optimal compromises between them are required to solve the MOP and define a Pareto front. In this way, the alternative procedure allows the reactor to reach the cold shutdown state in a time ranging from around 36 min to 3 h and 52 min. The shortest observed time to reach the safety state induces a maximum of the thermal gradient through the main vessel around 40 percent higher than the procedure with passive DHR systems whereas a long delay to reach the safety state can divide the higher thermal gradient observed by 6.7. Thanks to the regulation of the TM rotation speed, the gas PCS is hence an adaptable system to optimize the thermalhydraulic behaviour of a SFR during a LOOP.

ACS Style

A. Grange; Amandine Marrel; J.B. Droin; F. Bertrand; O. Boutin; J.H. Ferrasse. Loss of off-site power transient analysis for a sodium-cooled fast reactor equipped with a gas power conversion system and preliminary optimisation of its operation. Nuclear Engineering and Design 2019, 355, 110315 .

AMA Style

A. Grange, Amandine Marrel, J.B. Droin, F. Bertrand, O. Boutin, J.H. Ferrasse. Loss of off-site power transient analysis for a sodium-cooled fast reactor equipped with a gas power conversion system and preliminary optimisation of its operation. Nuclear Engineering and Design. 2019; 355 ():110315.

Chicago/Turabian Style

A. Grange; Amandine Marrel; J.B. Droin; F. Bertrand; O. Boutin; J.H. Ferrasse. 2019. "Loss of off-site power transient analysis for a sodium-cooled fast reactor equipped with a gas power conversion system and preliminary optimisation of its operation." Nuclear Engineering and Design 355, no. : 110315.

Journal article
Published: 01 March 2019 in Energy
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ACS Style

Jonathan Goffé; Jean-Henry Ferrasse. Stoichiometry impact on the optimum efficiency of biomass conversion to biofuels. Energy 2019, 170, 438 -458.

AMA Style

Jonathan Goffé, Jean-Henry Ferrasse. Stoichiometry impact on the optimum efficiency of biomass conversion to biofuels. Energy. 2019; 170 ():438-458.

Chicago/Turabian Style

Jonathan Goffé; Jean-Henry Ferrasse. 2019. "Stoichiometry impact on the optimum efficiency of biomass conversion to biofuels." Energy 170, no. : 438-458.

Journal article
Published: 23 February 2019 in Chemical Engineering Science
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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°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.

ACS Style

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, 186 -202.

AMA Style

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 ():186-202.

Chicago/Turabian Style

Clément Leonard; Jean-Henry Ferrasse; Sébastien Lefevre; Alain Viand; Olivier Boutin. 2019. "Gas hold up in bubble column at high pressure and high temperature." Chemical Engineering Science 200, no. : 186-202.

Journal article
Published: 07 September 2018 in International Journal of Hydrogen Energy
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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.

ACS Style

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, 18883 -18895.

AMA Style

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):18883-18895.

Chicago/Turabian Style

Wirginia Tomczak; Jean-Henry Ferrasse; Marie-Thérèse Giudici-Orticoni; Audrey Soric. 2018. "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 43, no. 41: 18883-18895.

Transport phenomena and fluid mechanics
Published: 28 July 2018 in AIChE Journal
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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. This article is protected by copyright. All rights reserved.

ACS Style

C. Leonard; J-H. Ferrasse; O. Boutin; Sebastien Lefevre; A. Viand. Measurements and correlations for gas liquid surface tension at high pressure and high temperature. AIChE Journal 2018, 64, 4110 -4117.

AMA Style

C. Leonard, J-H. Ferrasse, O. Boutin, Sebastien Lefevre, A. Viand. Measurements and correlations for gas liquid surface tension at high pressure and high temperature. AIChE Journal. 2018; 64 (11):4110-4117.

Chicago/Turabian Style

C. Leonard; J-H. Ferrasse; O. Boutin; Sebastien Lefevre; A. Viand. 2018. "Measurements and correlations for gas liquid surface tension at high pressure and high temperature." AIChE Journal 64, no. 11: 4110-4117.

Journal article
Published: 27 January 2017 in Chemical Engineering Research and Design
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•The paper summarizes the round-table discussion on energy efficiency and cross-discipline collaboration.•Development of tools that allow non-experts to have access to the main outcomes of a key technology.•Educate non-experts using clear messages that can be understood as widely as possible AbstractThis paper summarizes the round-table discussion that was held during the European Congress 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 brought in different perspectives. The objective was to determine paths for developing innovative approaches in view of process optimization.The terminology is a first obstacle that was clarified. Energy efficiency can be envisaged either by optimizing thermodynamic functions (entropy or exergy), more pragmatically by selecting the adequate unit operation or in a very general vision by considering all decision variables (i.e. including economic and political) that may have an impact on the final service provided to society.The second issue relates to improving collaboration among various actors. These may be defined 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 for Chemical 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 lead to true innovation. The largest innovation potential is often found at the interface between fields. Yet, it often requires both an effort to explain the mutual challenges in a didactic manner, and the development of tools that make it possible to each partner to be efficient in his own field while being aware of the global goal and of the constraints of the others.

ACS Style

J.-C. De Hemptinne; J.-H. Ferrasse; Andrzej Gorak; S. Kjelstrup; Francois Marechal; O. Baudouin; Rafiqul Gani; Press Enter Key For Correspondence Information. Energy efficiency as an example of cross-discipline collaboration in chemical engineering. Chemical Engineering Research and Design 2017, 119, 183 -187.

AMA Style

J.-C. De Hemptinne, J.-H. Ferrasse, Andrzej Gorak, S. Kjelstrup, Francois Marechal, O. Baudouin, Rafiqul Gani, Press Enter Key For Correspondence Information. Energy efficiency as an example of cross-discipline collaboration in chemical engineering. Chemical Engineering Research and Design. 2017; 119 ():183-187.

Chicago/Turabian Style

J.-C. De Hemptinne; J.-H. Ferrasse; Andrzej Gorak; S. Kjelstrup; Francois Marechal; O. Baudouin; Rafiqul Gani; Press Enter Key For Correspondence Information. 2017. "Energy efficiency as an example of cross-discipline collaboration in chemical engineering." Chemical Engineering Research and Design 119, no. : 183-187.

Journal article
Published: 06 January 2017 in Bioprocess and Biosystems Engineering
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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 °C in the range of temperatures tested (40-55 °C).

ACS Style

D. Tafoukt; Audrey Soric; J.-C. Sigoillot; J.-H. Ferrasse. Determination of kinetics and heat of hydrolysis for non-homogenous substrate by isothermal calorimetry. Bioprocess and Biosystems Engineering 2017, 40, 643 -650.

AMA Style

D. Tafoukt, Audrey Soric, J.-C. Sigoillot, J.-H. Ferrasse. Determination of kinetics and heat of hydrolysis for non-homogenous substrate by isothermal calorimetry. Bioprocess and Biosystems Engineering. 2017; 40 (4):643-650.

Chicago/Turabian Style

D. Tafoukt; Audrey Soric; J.-C. Sigoillot; J.-H. Ferrasse. 2017. "Determination of kinetics and heat of hydrolysis for non-homogenous substrate by isothermal calorimetry." Bioprocess and Biosystems Engineering 40, no. 4: 643-650.

Journal article
Published: 01 November 2016 in International Journal of Heat and Mass Transfer
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International audienceThis 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. (C) 2016 Elsevier Ltd. All rights reserved

ACS Style

H.S. Pham; N. Alpy; S. Mensah; M. Tothill; J.H. Ferrasse; O. Boutin; J. Quenaut; G. Rodriguez; M. Saez. A numerical study of cavitation and bubble dynamics in liquid CO2 near the critical point. International Journal of Heat and Mass Transfer 2016, 102, 174 -185.

AMA Style

H.S. Pham, N. Alpy, S. Mensah, M. Tothill, J.H. Ferrasse, O. Boutin, J. Quenaut, G. Rodriguez, M. Saez. A numerical study of cavitation and bubble dynamics in liquid CO2 near the critical point. International Journal of Heat and Mass Transfer. 2016; 102 ():174-185.

Chicago/Turabian Style

H.S. Pham; N. Alpy; S. Mensah; M. Tothill; J.H. Ferrasse; O. Boutin; J. Quenaut; G. Rodriguez; M. Saez. 2016. "A numerical study of cavitation and bubble dynamics in liquid CO2 near the critical point." International Journal of Heat and Mass Transfer 102, no. : 174-185.

Journal article
Published: 01 October 2016 in International Journal of Heat and Fluid Flow
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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.

ACS Style

H.S. Pham; N. Alpy; J.H. Ferrasse; O. Boutin; M. Tothill; J. Quenaut; O. Gastaldi; T. Cadiou; M. Saez. 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, 379 -394.

AMA Style

H.S. Pham, N. Alpy, J.H. Ferrasse, O. Boutin, M. Tothill, J. Quenaut, O. Gastaldi, T. Cadiou, M. Saez. 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 ():379-394.

Chicago/Turabian Style

H.S. Pham; N. Alpy; J.H. Ferrasse; O. Boutin; M. Tothill; J. Quenaut; O. Gastaldi; T. Cadiou; M. Saez. 2016. "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 61, no. : 379-394.

Review
Published: 01 June 2015 in Bioresource Technology
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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.

ACS Style

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, 386 -398.

AMA Style

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 ():386-398.

Chicago/Turabian Style

Cristian Barca; Audrey Soric; David Ranava; Marie-Thérèse Giudici-Orticoni; Jean-Henry Ferrasse. 2015. "Anaerobic biofilm reactors for dark fermentative hydrogen production from wastewater: A review." Bioresource Technology 185, no. : 386-398.

Journal article
Published: 01 February 2015 in Chemical Engineering Science
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ACS Style

Félicité Ondze; Olivier Boutin; Jean-Christophe Ruiz; Jean-Henry Ferrasse; Frederic Charton. Supercritical water gasification of beet residues: From batch to continuous reactor. Chemical Engineering Science 2015, 123, 350 -358.

AMA Style

Félicité Ondze, Olivier Boutin, Jean-Christophe Ruiz, Jean-Henry Ferrasse, Frederic Charton. Supercritical water gasification of beet residues: From batch to continuous reactor. Chemical Engineering Science. 2015; 123 ():350-358.

Chicago/Turabian Style

Félicité Ondze; Olivier Boutin; Jean-Christophe Ruiz; Jean-Henry Ferrasse; Frederic Charton. 2015. "Supercritical water gasification of beet residues: From batch to continuous reactor." Chemical Engineering Science 123, no. : 350-358.

Research article
Published: 01 August 2014 in Energy & Fuels
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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, 1H 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.

ACS Style

Nicolas Doassans-Carrère; 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, 5103 -5111.

AMA Style

Nicolas Doassans-Carrère, 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 (8):5103-5111.

Chicago/Turabian Style

Nicolas Doassans-Carrère; Jean-Henry Ferrasse; Olivier Boutin; Guillain Mauviel; Jacques Lédé. 2014. "Comparative Study of Biomass Fast Pyrolysis and Direct Liquefaction for Bio-Oils Production: Products Yield and Characterizations." Energy & Fuels 28, no. 8: 5103-5111.

Book chapter
Published: 13 June 2014 in Modern Drying Technology
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This chapter contains sections titled: Introduction to the Sludge Context Sludge Drying Technologies Energy Efficiency of Sludge Drying Processes Thermal Valorization of Sewage Sludge Energy Efficiency of Thermal Valorization Routes Conclusions References

ACS Style

Patricia Arlabosse; Jean-Henry Ferrasse; Didier LeComte; Michel Crine; Yohann Dumont; Angelique Leonard. Efficient Sludge Thermal Processing: From Drying to Thermal Valorization. Modern Drying Technology 2014, 295 -329.

AMA Style

Patricia Arlabosse, Jean-Henry Ferrasse, Didier LeComte, Michel Crine, Yohann Dumont, Angelique Leonard. Efficient Sludge Thermal Processing: From Drying to Thermal Valorization. Modern Drying Technology. 2014; ():295-329.

Chicago/Turabian Style

Patricia Arlabosse; Jean-Henry Ferrasse; Didier LeComte; Michel Crine; Yohann Dumont; Angelique Leonard. 2014. "Efficient Sludge Thermal Processing: From Drying to Thermal Valorization." Modern Drying Technology , no. : 295-329.

Journal article
Published: 23 October 2013 in Chemical Engineering & Technology
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ACS Style

A. B. Hernandez; J.-H. Ferrasse; Nicolas Roche. Limiting the Pollutant Content in the Sewage Sludge Producer Gas through Staged Gasification. Chemical Engineering & Technology 2013, 36, 1985 -1996.

AMA Style

A. B. Hernandez, J.-H. Ferrasse, Nicolas Roche. Limiting the Pollutant Content in the Sewage Sludge Producer Gas through Staged Gasification. Chemical Engineering & Technology. 2013; 36 (11):1985-1996.

Chicago/Turabian Style

A. B. Hernandez; J.-H. Ferrasse; Nicolas Roche. 2013. "Limiting the Pollutant Content in the Sewage Sludge Producer Gas through Staged Gasification." Chemical Engineering & Technology 36, no. 11: 1985-1996.

Original articles
Published: 24 May 2013 in Environmental Technology
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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.

ACS Style

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, 2571 -2578.

AMA Style

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):2571-2578.

Chicago/Turabian Style

Ming Zeng; Audrey Soric; Jean-Henry Ferrasse; Nicolas Roche. 2013. "Interpreting hydrodynamic behaviour by the model of stirred tanks in series with exchanged zones: preliminary study in lab-scale trickling filters." Environmental Technology 34, no. 18: 2571-2578.

Journal article
Published: 31 May 2012 in Energy
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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.

ACS Style

Sébastien Lefevre; Jean-Henry Ferrasse; Rémy Faucherand; Alain Viand; Olivier Boutin. Energetic optimization of wet air oxidation process using experimental design coupled with process simulation. Energy 2012, 41, 175 -183.

AMA Style

Sébastien Lefevre, Jean-Henry Ferrasse, Rémy Faucherand, Alain Viand, Olivier Boutin. Energetic optimization of wet air oxidation process using experimental design coupled with process simulation. Energy. 2012; 41 (1):175-183.

Chicago/Turabian Style

Sébastien Lefevre; Jean-Henry Ferrasse; Rémy Faucherand; Alain Viand; Olivier Boutin. 2012. "Energetic optimization of wet air oxidation process using experimental design coupled with process simulation." Energy 41, no. 1: 175-183.

Book chapter
Published: 26 January 2012 in Modern Drying Technology
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This chapter contains sections titled: Introduction to the Sludge Context Sludge Drying Technologies Energy Efficiency of Sludge Drying Processes Thermal Valorization of Sewage Sludge Energy Efficiency of Thermal Valorization Routes Conclusions References

ACS Style

Patricia Arlabosse; Jean-Henry Ferrasse; Didier LeComte; Michel Crine; Yohann Dumont; Angélique Léonard. Efficient Sludge Thermal Processing: From Drying to Thermal Valorization. Modern Drying Technology 2012, 295 -329.

AMA Style

Patricia Arlabosse, Jean-Henry Ferrasse, Didier LeComte, Michel Crine, Yohann Dumont, Angélique Léonard. Efficient Sludge Thermal Processing: From Drying to Thermal Valorization. Modern Drying Technology. 2012; ():295-329.

Chicago/Turabian Style

Patricia Arlabosse; Jean-Henry Ferrasse; Didier LeComte; Michel Crine; Yohann Dumont; Angélique Léonard. 2012. "Efficient Sludge Thermal Processing: From Drying to Thermal Valorization." Modern Drying Technology , no. : 295-329.