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Effect of non-solvent additives and volatile solvent on the performance of polysulfone flat sheet gas separation membranes

Publish Year: 1388
Type: Conference paper
Language: English
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ICHEC06_135

Index date: 23 September 2009

Effect of non-solvent additives and volatile solvent on the performance of polysulfone flat sheet gas separation membranes abstract

The effects of non solvent additves, polymeric additives, polymer concentration and volatile solvent on the performance of polysulfone flat sheet gas separation membranes have been investigated. Flat sheet membranes were fabricated by the phase inversion technique and characterized by gas permeation tests using pure carbon dioxide and methane. The results showed that ideal CO2/CH4 separation factor of the improved by the presence of the additives in the following order: PEG400>Ethanol>PVP>Glycerol. This was in accordance with the shift of binodal line to the (polymer)- (solvent(s)/nonsolvent) axis. The critical concentration of polysulfone in 1-methyl-2-pyrrolidone (NMP) solvent was determined by viscometry experiment to be 30 wt. %. Adding tetrahydrofuran as a volatile solvent into the polymer solution increased the membrane selectivity, which was attributed to delay L-L demixing induced by volatile solvent, elimination of the macro-void formation during demixing and selective loss of highly volatile solvent from the outermost surface of the membrane during polymer solution casting.

Effect of non-solvent additives and volatile solvent on the performance of polysulfone flat sheet gas separation membranes Keywords:

Effect of non-solvent additives and volatile solvent on the performance of polysulfone flat sheet gas separation membranes authors

M . A Aroon

School of Chemical Engineering, College of Engineering, University of Tehran, Advanced Membrane Technology, Faculty of Chemical and Natural Resources Engineering , University Teknology Malaysia ,۸۱۳۱۰,UTM Skudai, Johor, Malaysia

A . F Ismail

Advanced Membrane Technology, Faculty of Chemical and Natural Resources Engineering , University Teknology Malaysia ,۸۱۳۱۰,UTM Skudai, Johor, Malaysia

M . M Montazer-Rahmati

School of Chemical Engineering, College of Engineering, University of Tehran,

T Matsuura

Advanced Membrane Technol

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