Feishi Xu, Mélanie Jimenez, Nicolas Dietrich, Gilles Hébrard Chemical Engineering Science Volume 170, 12 October 2017, Pages 68-76 Abstract Two effective mathematical approaches based on the probability and statistics theory are proposed for obtaining the oxygen diffusion coefficients in gas-liquid systems. The first method was to apply PLIFI (Planar Laser Induced Fluorescence with Inhibition) to […]
David Benizri, Nicolas Dietrich, Gilles Hébrard Chemical Engineering Science Volume 170, 12 October 2017, Pages 116-121 Abstract The Henry’s law constant is required to size absorption processes. However, its experimental determination for multi-component gases in presence of complex liquids remains problematic in the process industry and research field. This work presents a new experimental setup […]
Xiaomin Xie, Claude Le Men, Nicolas Dietrich, PhilippeSchmitz, LucFillaudeau https://doi.org/10.1016/j.seppur.2017.04.009 Separation and Purification Technology Abstract To better understand the hydrodynamics in a Dynamic Filtration module (DF), a local investigation within a complex and confined module named Rotating and Vibrating Filtration (RVF) was scrutinized under laminar flow with viscous Newtonian fluid (Remixing = 45). RVF consists of two […]
C. W. Zhao, C. Gentric, N. Dietrich, Y. G. Ma, and Huai Z. Li Physics of Fluids 29, 072108 (2017); doi: http://dx.doi.org/10.1063/1.4995476 ABSTRACT The present study aims at investigating the deformation mechanism of liquid-liquid interfaces by both the experimental and numerical approaches. The experiments reveal that the topology of an initial flat interface composed of […]
Our work, titled « Visualization of mass transfer around a bubble swarm in a 2D Hele-Shaw Cell » (Personnal Communication, 2012), has been selected for the cover of Chem. Eng. Technol. 8/2017 (page 1379). DOI: 10.1002/ceat.201770081 Copyright: Hamburg University of Technology and Fédération de Recherche FERMAT – University of Toulouse
Abstract : Gas-liquid mass transfer around Taylor bubbles moving in a meandering millimetric square channel was locally visualized and characterized in the present study. For that, the colorimetric technique proposed by Dietrich et al. (2013) was implemented. With this technique, the evolution of equivalent oxygen concentration fields in the liquid slugs passing through one and […]
Abstract: The present work provides an experimental study of the effect of the glycerol concentration on removal performances in a Submerged Aerobic Fixed-Film (SAF) Reactor performing in batch mode. This study consisted in adding various initial substrate concentrations of synthetic solutions (glycerol) in order to assess their effects on biodegradation kinetics and then on bacterial […]
Abstract The aim of this work is to study continuous counter-current absorption of Volatile Organic Compounds (VOCs) by an oil–water emulsion. This process enables the treatment of hydrophilic and hydrophobic VOC within a gaseous effluent emitted by chemical or food processing industries. Toluene was chosen as the pollutant in this work because of its […]
Abstract Quorum Quenching (QQ) has been developed over the last few years to overcome practical issues related to membrane biofouling, which is currently the major difficulty thwarting the extensive development of membrane bioreactors (MBRs). QQ is the disruption of Quorum Sensing (QS), cell-to-cell communication enabling the bacteria to harmonize their behavior. The production of […]
Visualization of mass transfer is a powerful tool to improve understanding of local phenomenon. The use of an oxygen-sensitive dye (colorimetric technique) (Dietrich et al., Chem Eng Sci. 2013; 100:172–182) has showed its relevancy for locally visualizing and characterizing gas–liquid mass transfer at different scales (Kherbeche et al., Chem Eng Sci. 2013; 100: 515–528; Yang et al., […]
