Separation of CO2/N2 by ABS/PEG Blend Membrane

Greenhouse CO2 gas content is increasing in the atmosphere. Separation of CO2 from emission sources generated by power plants, steel works and various chemical industries has attracted global attention as a result of the enhanced greenhouse destructive effects. Considering the advantages of gas separation polymeric membranes by blending method for membrane preparation, acrylonitrile-butadiene-styrene/Poly (ethylene glycol)blend membranes have been prepared. Then, the effect of incorporating different PEG contents into ABS on the permeability/selectivity of CO2/N2 was investigated. Additionally, the effect of pressure on CO2 permeability has been studied. The results showed that CO2 permeability in the ABS/PEG20000 (10 wt %) had the most suitable gas separation properties. In addition, the CO2 permeability and CO2/N2 selectivity values of this membrane increased significantly in comparison with neat ABS membrane.