Experimental and Numerical Investigation of CO2 Absorption Using Nanofluids inaHollow-Fiber Membrane Contactor

To remove CO2 from N-2/CO2 gas mixtures, -Al2O3/water and -Al2O3/water nanofluids have been used in a dialysis nanoporous hollow-fiber membrane contactor. The mass transfer coefficient, CO2 removal efficiency, and CO2 concentration profile were determined under different operating conditions. The results showed that the addition of -Al2O3 and -Al2O3 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.