Adsorption study of metal ions onto crosslinked seaweed Laminaria japonica

被引：71

作者：

Ghimire, Kedar Nath ^{[1
]}

Inoue, Katsutoshi ^{[1
]}

Ohto, Keisuke ^{[1
]}

Hayashida, Takehiro ^{[1
]}

机构：

[1] Saga Univ, Dept Appl Chem, Saga 8408502, Japan

来源：

BIORESOURCE TECHNOLOGY | 2008年 / 99卷 / 01期

关键词：

seaweed; adsorption; metal ions; ion exchange; arsenic;

D O I：

10.1016/j.biortech.2006.11.057

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

An efficient and cost effective non-conventional adsorbent has been prepared from seaweed Laminaria japonica by crosslinking with epichlorohydrin. its adsorption behavior for trivalent and divalent metal ions was studied and it was found to exhibit excellent selectivity towards several metal ions. As a typical example, binary mixture of Pb(II) and Zn(II) was studied by using a packed column, indicating that the Pb(11) ion can be easily separated from its mixture with a concentration factor of 74 times. The maximum adsorption capacity for Pb(II), Cd(II), Fe(III) was found to be 1.35, 1.1, 1.53 mol kg(-1), respectively, while 0.87 mol kg(-1) for both La(III) and Ce(III) from the single metal ion solution according to the adsorption isotherm. The obtained values are comparable to the commercially available synthetic chelating resins. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：32 / 37

页数：6

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