文献类型：期刊文献

英文题名：Fabrication and characterization of superhydrophobic polypropylene hollow fiber membranes for carbon dioxide absorption

作者：Lv, Yuexia[1,2]; Yu, Xinhai[1]; Jia, Jingjing[1]; Tu, Shan-Tung[1]; Yan, Jinyue[2,3]; Dahlquist, Erik[2]

机构：[1] Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, China; [2] School of Sustainable Development of Society and Technology, M?lardalen University, V?ster?s, Sweden; [3] School of Chemical Science and Engineering, Royal Institute of Technology, Stockholm, Sweden

年份：2012

卷号：90

期号：1

起止页码：167

外文期刊名：Applied Energy

收录：EI(收录号：20114414479371)

语种：英文

外文关键词：Gas permeable membranes - Mass transfer - Fibers - Gas absorption - Polypropylenes - Coatings - Wetting - Hydrophobicity

摘要：The membrane wetting by amine absorbents results in performance deterioration of membrane gas absorption system for CO2 post-combustion capture. To solve this problem, in this study, the polypropylene membrane fiber was modified by depositing a rough layer on the surface to improve its hydrophobicity. Weighing the coating homogeneity, hydrophobicity and modification process efficiency, the mixture of cyclohexanone and MEK system was considered as the best non-solvent. The contact angle increased dramatically from 122° to 158° by the modification, thereby obtaining superhydrophobic membrane surface. The membrane-absorbent interaction results demonstrated that the modification treatment effectively enhanced the stability and maintained the superhydrophobicity of fibers contacting with the absorbent. In addition, continuous CO2 absorption experiments for up to 20days were carried out in untreated and modified polypropylene hollow fiber membrane contactors, using 1molL-1 MEA solution as the absorbent. The long-term system operation results indicated that, even though additional mass transfer resistance was introduced by the surface coating, the modified polypropylene hollow fiber membrane contactor was still technically feasible for CO2 capture from the power stations. ? 2010 Elsevier Ltd.