SELECTIVITY AND CHARACTERISTICS OF DIRECT CONTACT MEMBRANE DISTILLATION TYPE EXPERIMENT .1. PERMEABILITY AND SELECTIVITY THROUGH DRIED HYDROPHOBIC FINE POROUS MEMBRANES

被引：42

作者：

FUJII, Y ^{[1
]}

KIGOSHI, S ^{[1
]}

IWATANI, H ^{[1
]}

AOYAMA, M ^{[1
]}

机构：

[1] RES ASSOC BASIC POLYMER TECHNOL,MINATO KU,TOKYO,JAPAN

来源：

JOURNAL OF MEMBRANE SCIENCE | 1992年 / 72卷 / 01期

关键词：

DIRECT CONTACT MEMBRANE; DISTILLATION; FINE POROUS MEMBRANE; HOLLOW FIBER; ALCOHOL SELECTIVITY; POLY(VINYLIDENE FLUORIDE); POLYSULFONE;

D O I：

10.1016/0376-7388(92)80056-P

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Permeability and selectivity through fine porous membranes of hydrophobic polymers and direct contact membrane distillation (DCMD) type separation with such membranes have been studied. The permeability of an organic solute in dilute aqueous solution through the dried hollow fiber membranes depends on the partial vapor pressure of the solute. The selectivity for alcohol observed in a pervaporation type experiment depends on the ratio of the mean pore radius of the membrane to the radius of the alcohol molecule. The fluxes of ethanol and water in DCMD type separation are directly proportional to the partial vapor pressure differences, and the selectivity for ethanol varies with the properties of the polymers and the membranes. Polarization of temperature and concentration and heat transport characteristics are also studied.

引用

页码：53 / 72

页数：20

共 20 条

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[2]

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