Generation of small bubbles and small bubble-liquid mass transfer in airlift reactors containing highly viscous liquids

1999 ◽  
Vol 21 (1) ◽  
pp. 89 ◽  
Author(s):  
B. Kawalec-Pietrenko ◽  
W. Pietrenko
Keyword(s):  
Mass Transfer ◽  
Small Bubble ◽  
Bubble Liquid ◽  
Viscous Liquids ◽  
Liquid Mass ◽  
Liquid Mass Transfer ◽  
Small Bubbles ◽  
Airlift Reactors

Coupling between Mass Transfer and Chemical Reactions during the Absorption of CO2 in a NaHCO3-Na2CO3 Brine : Experimental and Theoretical Study

2008 ◽  
Vol 6 (1) ◽  
Author(s):  
Christophe E Wylock ◽  
Pierre Colinet ◽  
Thierry Cartage ◽  
Benoît Haut
Keyword(s):  
Mass Transfer ◽  
Liquid Phase ◽  
Chemical Reactions ◽  
Reaction Model ◽  
Gas Absorption ◽  
Diffusion Reaction ◽  
Co2 Absorption ◽  
Bubble Liquid ◽  
Liquid Mass ◽  
Liquid Mass Transfer

This work deals with the study of the gas-liquid mass transfer, coupled with chemical reactions. The case of carbonic gas absorption in a brine of sodium carbonate and bicarbonate is investigated. It is performed in collaboration with Solvay SA. The aim of this work is to get a better understanding of this phenomenon. It would permit an optimization of the refined sodium bicarbonate production process. The basis of developed mathematical models is presented. The CO2 absorption is coupled with several chemical reactions taking place in the liquid phase. A mathematical modelling of this coupling is first developed. The equations of the model are solved numerically, using COMSOL Multiphysics. To model the bubble-liquid mass transfer of CO2, this diffusion-reaction model is completed by a representation of the liquid phase flow around the bubble. In order to validate experimentally each scale of modelling, two experimental devices are proposed.

Enhancement of formic acid production from CO2 in formate dehydrogenase reaction using nanoparticles

RSC Advances ◽  
2016 ◽  
Vol 6 (111) ◽  
pp. 109978-109982 ◽  
Author(s):  
Young-Kee Kim ◽  
Sung-Yeob Lee ◽  
Byung-Keun Oh
Keyword(s):  
Mass Transfer ◽  
Formic Acid ◽  
Acid Production ◽  
Transfer Rate ◽  
Formate Dehydrogenase ◽  
Mass Transfer Rate ◽  
Liquid Mass ◽  
Dehydrogenase Reaction ◽  
Liquid Mass Transfer ◽  
Mesoporous Nanoparticles

In an enzyme process using a gas substrate, the enhanced gas liquid mass transfer rate of the gas substrate by methyl-functionalized mesoporous nanoparticles could improve the productivity.

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