شهریار عصفوری

Nanofluids as a separation solvent for the removing of acid gases are convenient alternative to conventional chemical solvents, particularly in the desalination industry. Integration of membrane separation process and nanofluids as a solvent is the objectives of this project, where caused a great benefits in terms of energy consumption and cost, simplicity and space requirements compared to other methods such as distillation, Absorbent and solid columns and so on. The elimination of carbon dioxide using nano silica (SiO2), aluminum oxide (Al2O3) and titanium oxide (TiO2) nanofluids in a hollow fiber membrane using polypropylene (PP) was studied experimentally. Nanofluids in concentrations of 0.05, 0.1 and 0.2 wt% were used in the experiments. Factors such as different naofluids and gas flow rates, nanoparticles, liquid temperature, the weight percentage of nanoparticles, as well as the effect of particle size on the separation was investigated. The results clearly show that the highest flux of carbon dioxide occurred for 0.2% concentration of alumina nanofluids. Relative flux varied from 1.29 to 2.25 for the alumina nanofluid with respect to the de-ionized water as the base fluid. One factor that increases the mass transfer in nanofluid creates vortices and Brownian motion of nanoparticles. The Brownian motion of nanoparticles in high concentrations, they can reduce the aggregation of nanoparticles and heavy. Therefore, the optimum concentration of nanoparticles obtained in the process of absorption. According to the available potential in the field of heat and mass transfer in nanofluids could be using them in the industry to achieve higher efficiency and lower power consumption equipment.