A Review on Diffusion Coefficient and Mass Transfer Coefficients of Nanofluids and its Application in Gas Absorption Processes

Gas absorption is a prevalent and important process in industry for gas component separation of gas mixture. Numerous research have been carried out to increase the efficiency of absorption processes which include mechanical method, adding surfactant, microparticles and nanoparticles to liquid phase and using external fields. This paper, either effect of nanoparticles addition in liquid phase and applying magnetic field on gas-liquid mass transfer were investigated separately and simultaneously. Studies show fluid micro convection of nanoparticles as a result of brownian motion, grazing effect and increase of nanofluid residence time in comparison to base fluid and finally heat transfer improvement are some of the primary reasons which cause to increase of mass transfer in the nanofluid. Moreover applying magnetic field results in a torque on magnetic nanoparticles which increases nanoparticles movement, therefore mass transfer improves owing to enhancement of turbulency in boundary layer and decreases mass transfer resistance, consequently.