Experimental evaluation on the CO₂ separation process supported by polymeric membranes

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• 作者：Freni ; S. ; Cavallaro ; S. ; Donato ; S. ; Chiodo ; V. ; Vita ; A.
• 关键词：CO₂ separation ; Facilitated transport ; Polymeric membranes
• 刊名：Materials Letters
• 出版年：2004
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：May, 2004
• 卷：58
• 期：12-13
• 页码：1865-1872
• 文件大小：497 K

摘要

Planar polymeric membranes with hydrophilic, hydrophobic and composite (coupled or thermowelded) structures have been prepared and tested in an experimental lab-scale plant by using different liquid absorbents (amines, carbonate, H₂O) as “carrier” with the aim to optimize the process of CO₂ separation from other gas. The effect of nature of the membranes, differential pressure between gas/liquid phases and type and concentration of the absorbent were investigated as well as the carrier transport mechanism. The best performances (in terms of CO₂ permeability) have been determined for coupled membranes. Moreover, the experimental results have shown that, between the studied carriers, the 2-etanolamine is the type of adsorbent with the greater affinity toward the CO₂.