Journal of Advanced Chemical Engineering

Enhancement of the flux and selectivity of membrane for CO2 separation using a novel technique

2^nd International Conference on Advances in Chemical Engineering and Technology

November 16-17, 2017 | Paris, France

Ebrahim Ataeivarjovi, Zhigang Tang and Jian Chen

Tsinghua University, China

Posters & Accepted Abstracts: J Adv Chem Eng

Abstract:

Global warming is due to excessive greenhouse gases emission to the atmosphere, which is a global issue and has created great concerns. There are three different techniques for carbon capture and storage (CCS) including pre-combustion, post-combustion and oxyfuel combustion. Absorption, adsorption and membrane separation are common CO2 separation processes. Disadvantages of these processes are expensive and consuming a huge amount of energy. Therefore, there is a need of improvement of the old method, which is cheap and low energy consumption. A novel membrane-desorption combined with the solvent absorption process can be expected industrial feasibility candidate. In this study, which introduces a low-cost and low-energy consumption method, the first CO2 was absorbed into the dimethyl carbonate (physical solvent) and then CO2 desorbed by the membrane. The used membrane in this work was a polymeric membrane, which was prepared by the addition of 1 wt % of titanium dioxide nanoparticles to polydimethylsiloxane (PDMS). When 1 wt% of nanoparticles are added to the polymer, the flux and selectivity are increased 41.47 % and 5.79 % respectively, compared with composite (PDMS) membrane. The obtained results from pervaporation tests reveal that presented technique improved flux and selectivity properties compare to composite membranes.