New air gap membrane distillation module for desalination

被引：0

作者：

School of Chemical Engineering and Technology, Tianjin University, Tianjin ^{[1
]}

300072, China

不详 ^{[2
]}

300072, China

不详 ^{[3
]}

300191, China

机构：

[1] School of Chemical Engineering and Technology, Tianjin University, Tianjin

[2] Tainjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin

[3] Tianjin Recyclable Resources Institution, All China Federation of Supply and Marketing Cooperatives, Tianjin

来源：

Huagong Xuebao | / 10卷 / 4000-4006期

关键词：

Air gap membrane module; Desalination; Mass transfer; Membrane distillation;

D O I：

10.11949/j.issn.0438-1157.20150105

中图分类号：

学科分类号：

摘要：

A new air gap membrane distillation module based on hollow fiber with energy recovery was developed for desalination using 70 g·L-1 NaCl solution as the feed. The effects of membrane module length and membrane pore size were investigated. For measuring directly the effects of operating conditions, membrane module properties, and temperature and concentration polarization on the mass transfer coefficient, the total mass transfer coefficient was introduced. The effects of membrane pore size, feeding temperature and feeding flow rate were studied. The results showed that the total mass transfer coefficient increased with the increase of membrane pore size and feeding temperature. The membrane flux and gained-out put ratio were increased effectively with increasing membrane pore size. Since increasing membrane module length would reduce the membrane flux while enhance the gained-out put ratio, the membrane flux and gained-out put ratio should be considered comprehensively for selection of the appropriate membrane module length in the application process. © All right reserved.

引用

页码：4000 / 4006

页数：6

共 20 条

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