Effects of magnetic field on the CO2 absorption in nanofluids in a bubble column

Document Type : Research paper

Authors

1 Isfahan University of Technology

2 chemical engineering group, isfahan university

3 Depatment of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran

Abstract

Effect of magnetic field on the CO2 absorption in deionized water, water/Fe3O4, and water/Al2O3 nanofluids in a bubble column is studied. Effect of the other key parameters such as gas flowrate, nanoparticle type, magnetic field direction, and nanofluid concentration on the mass transfer rate and mass transfer coefficient has also been investigated. The results showed according to the polar nature of the water moleculs, by increasing the magnetic fielt to 1133 gauss, the mass transfer coefficient in pure water increases up to 6.7%. The enhancement can be achieved if the direction of the magnetic filed is parallel to the direction of the continious phase. By adding the nanopaticles to the pure water, the mass transfer coefficient and mass transfer rate increses. By increasing the water/Fe3O4 concentration the mass transfre coefficient increases, but in the water/Al2O3 nanofluid, by incerasing the nanofluid concentration up to 0.005%, the mass trasnfer coefficient increases, and then decreases.

Keywords

Main Subjects


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