Publication Date:
2016-04-02
Description:
Natural gas is a primary source of energy and most of the natural gas reserves are contaminated with high percentages of CO 2 . Removal of CO 2 from natural gas is necessary to purify the gas and to enhance the calorific value of gas. Different processes are used for CO 2 removal from natural gas, but all these processes have several limitations. Membrane technology is an efficient technique for CO 2 removal from natural gas due to its ease of operation and low cost. Among different types of membranes used for gas separation, polymeric membranes exhibit excellent separation performance. In polymeric membranes, the separation performance is affected by plasticization and swelling in the membrane. Recent technological advancements and major problems in polymeric membranes are reported in this review. Separation performance of polymeric membranes is highlighted in terms of permeability and selectivity. Moreover, techniques to overcome the major problems in polymeric membranes are highlighted. Among all these techniques, crosslinking and thermal treatment are commonly used to minimize the effect of plasticization and swelling in the membrane. For future perspectives, it can be concluded that there is a need to find more efficient methods to overcome the problems of plasticization and swelling in the polymeric membrane.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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