To remove CO 2 from N 2 /CO 2 gas mixtures, a-Al 2 O 3 /water and g-Al 2 O 3 /water nanofluids have been used in a dialysis nanoporous hollow-fiber membrane contactor. The mass transfer coefficient, CO 2 removal efficiency, and CO 2 concentration profile were determined under different operating conditions. The results showed that the addition of a-Al 2 O 3 and g-Al 2 O 3 nanoparticles to the solvent increased the mass transfer rate, and by raising the nanofluid concentration, the removal efficiency enhanced. The process was simulated by means of computational fluid dynamics (CFD) method. The good agreement between CFD predictions and experimental results indicates that the CFD is a reliable tool for optimization of the process.
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