ADSORPTION OF LEAD IONS ON IMMOBILIZED HUMIC-ACID

被引：24

作者：

SEKI, H

SUZUKI, A

KASHIKI, I

机构：

[1] Department of Chemistry, Faculty of Fisheries, Hokkaido University, Hakodate

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1990年 / 134卷 / 01期

关键词：

D O I：

10.1016/0021-9797(90)90251-I

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A fundamental study of the recovery of lead from dilute solution was carried out. Humic acid (HA) was immobilized by calcium alginate gel containing activated carbon powder. To understand the adsorption mechanism of lead on the adsorbent (HA-gel), a model for complexation between divalent metal ions and carboxyl groups on organic polymers was proposed. A general model could be proposed from this work. The results show that the complexation constant of the lead-humic acid system and the number of available sites for complexation of humic acid was not influenced by immobilization. However, the alginate gel used as an immobilizing agent affected the rate of adsorption to a remarkable extent. © 1990.

引用

页码：59 / 65

页数：7

共 9 条

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BUFFLE J, 1977, ANAL CHEM, V49, P2

[2] NEW ASPECTS OF URANIUM RECOVERY FROM SEA-WATER [J].