Effect of evaporation time on cellulose acetate membrane for gas separation

International Conference on Chemical and Bioprocess Engineering

地球科学;化学;生物科学

Jami'An, W.N.R.^1,2 ; Hasbullah, H.^1,2 ; Mohamed, F.^1,2 ; Yusof, N.^1,2 ; Ibrahim, N.^1 ; Ali, R.R.^3

Faculty of Petroleum and Renewable Energy Engineering, Universiti Teknologi Malaysia, Johor, Johor Bahru

81310, Malaysia^1

Advanced Membrane Technology Research Centre (AMTEC), Universiti Teknologi Malaysia, Johor, Johor Bahru

81310, Malaysia^2

Faculty of Chemical Engineering, Universiti Teknologi Malaysia, Johor, Johor Bahru

81310, Malaysia^3

关键词: Asymmetric membranes;    Cellulose acetate membrane;    Gas permeation tests;    Gas separation performance;    Membrane morphology;    N-methyl-2-pyrrolidone;    Phase inversion techniques;    Solvent evaporation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/36/1/012008/pdf
DOI  :  10.1088/1755-1315/36/1/012008

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Throughout this decades, membrane technology has been the desirable option among the others gas separation technologies. However, few issues have been raised regarding the membrane gas separation application including the trade-off between its permeability and selectivity and also its effects towards environment. Therefore, for this research, a biopolymer membrane for gas separation application will be developed with reasonably high on both permeability and selectivity. The main objective of this research is to study the effect of solvent evaporation time on the flat sheet asymmetric membrane morphology and gas separation performance. The membranes were produced by a simple dry/wet phase inversion technique using a pneumatically controlled casting system. The dope solution for the membrane casting was prepared by dissolving the cellulose acetate (CA) polymer in N-Methyl-2-pyrrolidone (NMP) and the solvent evaporation time was varied. Permeability and selectivity of the membrane was performed by using pure gases of carbon dioxide, CO2and methane, CH4. The increase in solvent evaporation time had improved the membrane morphologies as the porosity of the membrane surface decrease and formation of a more mature skin layer. The gas permeation tests determined that increasing in solvent evaporation time had increased the selectivity of CO2/CH4but reduce the permeability of both gases.