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Effect of coagulant bath on the gas permeation properties of cellulose acetate asymmetric membrane

Mohamed, F. and Hasbullah, H. and Jami'An, W. N. R. and Salleh, W. N. H. W. and Ibrahim, N. and Ali, R. R. (2016) Effect of coagulant bath on the gas permeation properties of cellulose acetate asymmetric membrane. In: 5th International Conference on Chemical and Bioprocess Engineering, ICCBPE 2015, 9 December 2015 through 12 December 2015, Sabah; Malaysia.

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Membrane based gas separation process technology has been recognized as one of the most efficient and advanced unit operation for gas separation. One of the problems in membrane gas separation is membrane performance. This paper explores the application of cellulose acetate (CA) membrane for natural gas purification and separation by improving its permeability and selectivity. The main interest in this research is to study the effect of quench medium on the gas separation performance towards its physical characteristics and gas separation performance of CA membrane. Cellulose acetate polymer was dissolved in n- methyl-2-pyrrolidone solvent and casted onto a glass plate using a pneumatically controlled casting system with fixed shear rate and solvent evaporation times. The parameter varied was the non-solvent used as quench medium during membrane post treatment that were methanol and n-hexane. The different quench media as post treatment affected the O2 and N2 gas permeation and O2/N2 selectivity as well as the tensile strength of the flat sheet asymmetric membrane. Combination of methanol and n-hexane as quench media gave the best result than the other steps. This solvent exchange step influenced the morphology by producing thin skin layer and thus gives better gas separation performance than other steps.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Air purification, Biochemical engineering, Cellulose, Gases, Hexane, Ionic liquids, Mechanical permeability, Membranes, Methanol, Organic solvents, Permeation, Separation, Solvents, Tensile strength
Subjects:T Technology > TP Chemical technology
Divisions:Petroleum and Renewable Energy Engineering
ID Code:73184
Deposited By: Muhammad Atiff Mahussain
Deposited On:26 Nov 2017 08:07
Last Modified:26 Nov 2017 08:07

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