Removal of organic compounds by alginate gel beads with entrapped activated carbon

被引：66

作者：

Lin, YB ^{[1
]}

Fugetsu, B ^{[1
]}

Terui, N ^{[1
]}

Tanaka, S ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Environm Earth Sci, Kita Ku, Sapporo, Hokkaido 0600810, Japan

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2005年 / 120卷 / 1-3期

关键词：

alginate gel beads entrapping activated carbon; removal of organic compounds; adsorption isotherm;

D O I：

10.1016/j.jhazmat.2005.01.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The adsorption of alginate gel (AG) beads and AG with activated carbon entrapped (AG-AC) beads prepared using different types of metal ions were investigated by measuring the removal of several organic compounds with different charges and size. AG-AC beads prepared in a CaCl2 solution adsorbed strongly positively charged compounds as well as electrically neutral and low molecular weight compounds such as p-chlorophenol. However, a high molecular weight humic acid was not adsorbed by AG-AC. The AG-AC selectively adsorbed p-chlorophenol from a humic acid solution. The adsorption capacity obtained from the adsorption isotherm of AC entrapped in AG was compared with that of AC. The AG-AC beads prepared in a solution of FeCl3 were able to specifically adsorb negatively charged gallic acid. Thus, entrapping AC into AG resulted in the selective adsorption. (c) 2005 Elsevier B.V. All rights reserved.

引用

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页码：237 / 241

页数：5

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