A comparison of nanofiltration with aqueous and organic solvents

被引:41
|
作者
Zhao, Yanyan [1 ]
Yuan, Qipeng [1 ]
机构
[1] Beijing Univ Chem Technol, Dept Pharmaceut Engn, Beijing 100029, Peoples R China
基金
中国国家自然科学基金;
关键词
nanofiltration; organic solvents; rejection;
D O I
10.1016/j.memsci.2005.12.040
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
This paper reports rejection of organic solutes with molecular weight (MW) in a range of 180-600 in aqueous and organic solvents through several commercial solvent resistant nanofiltration membranes (SRNF). The organic Solutes investigated include charged and neutral molecules and the selected solvents are water, water-methanol mixture. methanol. ethanol, acetone and ethyl acetate. The higher rejection in water than in organic solvents was observed for Desal-DK, MPF-44 and STARMEM (TM) series membranes. However, MPF-50 showed "uncommon" rejection characteristics of higher rejection in organic solvents (methanol. ethanol and acetone) than in water for neutral molecules compared to charged molecules. The rejection was analysed in accordance with the charge effect and hydration/solvation mechanism. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:453 / 458
页数:6
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