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28 results on '"Bessières, David"'

6. 9 - Gas storage

Author

Peredo-Mancilla, Deneb, Ghouma, Imen, Hort, Cecile, Bessieres, David, and Ghimbeu, Camélia Matei

Published
2019
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11. Contributors

Author

Agapiou, Agapios, Ahmed, Ahmed, Akrout, Hanene, Azzaz, Ahmed Amine, Belhachemi, Meriem, Bennici, Simona, Bessieres, David, Brassard, Patrick, Conder, Joanna, Courson, Claire, Fic, Krzysztof, Ghouma, Imen, Godbout, Stéphane, Hogue, Richard, Hort, Cecile, Jeanne, Thomas, Jeguirim, Mejdi, Jellali, Salah, Khanna, Rita, Khiari, Besma, Kwapinski, Witold, Labaki, Madona, Lévesque, Vicky, Li, Kejiang, Limousy, Lionel, Loizia, Pantelitsa, Matei Ghimbeu, Camélia, Mukherjee, Partha Sarathi, Navarro Pedreno, Jose, Palacios, Joahnn H., Peredo-Mancilla, Deneb, Raghavan, Vijaya, Sepúlveda-Escribano, Antonio, Stylianou, Marinos, Sun, Minmin, Tamošiūnas, Andrius, Verma, Mausam, Wang, Ziming, Zhang, Jianliang, and Zorpas, Antonis A.

Published
2019
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12. Study of asphaltene precipitation by Calorimetry

Author

Verdier, Sylvain Charles Roland, Plantier, Frédéric, Bessières, David, Andersen, Simon Ivar, Stenby, Erling Halfdan, Carrier, Hervé, Verdier, Sylvain Charles Roland, Plantier, Frédéric, Bessières, David, Andersen, Simon Ivar, Stenby, Erling Halfdan, and Carrier, Hervé

Abstract

Can calorimetry bring new input to the Current understanding of asphaltene precipitation? In this work, two types of precipitation were studied by means of calorimetry: addition of n-heptane into asphaltene solutions and temperature/pressure variations on a recombined live oil. The first series of experiments showed that weak forces determine precipitation. Indeed, isothermal titration calorimetry could not detect any clear signal although this technique can detect low-energy transitions such as liquid-liquid equilibrium and rnicellization. The second series of tests proved that precipitation caused by T and P variations is exothermic for this system. Furthermore, the temperature-induced precipitation is accompanied by an increase in the apparent thermal expansivity. Therefore, it seems that these two phase transitions exhibit different calorimetric behaviours and they may not be as similar as expected.

Published
2007

21. 6 toros 6

Author

Bessières, David

Subjects
Hermoso de Mendoza, Pablo Comentarios Artículos periodísticos
Published
1991

28. Interfacial properties of water/CO2: a comprehensive description through a Gradient Theory-SAFT-VR Mie approach.

Author

Lafitte T, Mendiboure B, Piñeiro MM, Bessières D, and Miqueu C

Abstract

The Gradient Theory of fluid interfaces is for the first time combined with the SAFT-VR Mie EOS to model the interfacial properties of the water/CO(2) mixture. As a preliminary test of the performance of the coupling between both theories, liquid-vapor interfacial properties of pure water have been determined. The complex temperature dependence of the surface tension of water can be accurately reproduced, and the interfacial thickness is in good agreement with experimental data and simulation results. The water/CO(2) mixture presents several types of interfaces as the liquid water may be in contact with gaseous, liquid, or supercritical CO(2). Here, the interfacial tension of the water/CO(2) mixture is modeled accurately by the gradient theory with a unique value of the crossed influence parameter over a broad range of thermodynamic conditions. The interfacial density profiles show a systematic adsorption of CO(2) in the interface. Moreover, when approaching the saturation pressure of CO(2), a prewetting transition is highlighted. The adsorption isotherm of CO(2) is computed as well in the case of a gas/liquid interface and compared with experimental data. The good agreement obtained is an indirect proof of the consistency of interfacial density profiles computed with the gradient theory for this mixture and confirms that the gradient theory is suitable and reliable to describe the microstructure of complex fluid interfaces.

Published
2010
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