期刊
JOURNAL OF MEMBRANE SCIENCE
卷 240, 期 1-2, 页码 227-235出版社
ELSEVIER
DOI: 10.1016/j.memsci.2004.04.025
关键词
microporous and porous membranes; water treatment; membrane preparation and structure; adsorption on membranes; biopolymeric membranes
The ability of chitosan to form complexes with bivalent metal ions has been broadly explored in the literature. The present work investigates the influence of functionalization of macroporous chitosan membranes with histidine on their ability to remove copper ions from aqueous solution in the range of pH 4-6. The maximum adsorption capacity for Cu(11) ion was 2.5 mmol metal/g pristine chitosan membranes. Under this condition. no influence of membrane porosity was observed. However, for membranes with immobilized histidine, the porosity was shown to be a factor that affects the maximum adsorption capacity, with values ranging from 2.0 to 3.0 mmol metal/g chitosan. These results indicate that the immobilization of histidine on porous chitosan membranes presents synergy with porosity in the ability to complex Cu(II) ions. This synergy may be negative or positive, depending on the initial membrane porosity. (C) 2004 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据