CO2/CH4 Separation via Polymeric Blend Membrane

CO2/CH4 gas separation is a very important applicatable process in upgrad-

ing the natural gas and landfil gas recovery. In this work, to investigate the

membrane separation process performance, the gas permeation results and

CO2/CH4 separation characteristics of different prepared membranes (via blending

different molecular weights of polyethylene glycol (PEG) as a modifier with acry-

lonitrile-butadiene-styrene (ABS) as a backbone structure) have been studied.

Furthermore, SEM analysis was carried out for morphological investigations. The

effect of PEG content on gas transport properties on the selected sample was also

studied. The effect of pressure on CO2 permeation was examined and showed that at

the pressure beyond 4 bar, permeability is not affected by pressure. The results

showed that more or less in all cases, incorporation of PEG molecules without any

significant increase in CH4 permeability increases the CO2/CH4 selectivity. From the

view point of gas separation applications the resultant data are within commercial

attractive range.

permeability,

selectivity,

CO2/CH4 separation,

blend membrane,

ABS

A B S T R A C T

Key Words:

CO2/CH4 Separation via Polymeric Blend Membrane

H. Sanaeepur1, A. Ebadi Amooghin1, A.R. Moghadassi1*, A. Kargari2,

D. Ghanbari3, Z. Sheikhi Mehrabadi4, and M. Nademi1

1. Department of Chemical Engineering, Faculty of Engineering, University of Arak,

P.O. Box: 38156-875, Arak, Iran

2. Department of Petrochemical Engineering, Amirkabir University of Technology (Tehran polytech-

nic), Mahshahr Campus, Mahshahr, P.O. Box: 415, Iran

3. Institute of Nano Science and Nano Technology, University of Kashan,

P.O. Box: 87317-51167, Kashan, Iran

4. Department of Chemistry, Faculty of Science, University of Arak, P.O. Box: 38156-879, Arak, Iran

Received 13 July 2009, accepted 4 May 2010

(*)To whom correspondence should be addressed.E-mail: [email protected]

Iranian Journal of PolymerScience and Technology

Vol. 23, No. 1, 17-28

April-May 2010

ISSN: 1016-3255

Available in: http://jips.ippi.ac.ir

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