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

页码：237 / 241

页数：5

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