CADMIUM ADSORPTION BY OXIC SEDIMENT

被引：56

作者：

FU, GM

ALLEN, HE

机构：

[1] UNIV DELAWARE, DEPT CIVIL ENGN, NEWARK, DE 19716 USA

[2] DREXEL UNIV, INST ENVIRONM STUDIES, PHILADELPHIA, PA 19104 USA

来源：

WATER RESEARCH | 1992年 / 26卷 / 02期

关键词：

ADSORPTION; CADMIUM; SEDIMENT; PH; MULTISITE MODEL;

D O I：

10.1016/0043-1354(92)90222-P

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

To understand the strong pH dependency of cadmium adsorption by oxic sediment, we investigated the surface charge of sediment particles by potentiometric titration with acid and base. Metal adsorbed by sediment can occur by complexation of metal ions with weakly acidic functional groups or by ion exchange of metal ions. A multi-site binding model, which incorporates the effect of pH, has been applied to describe the adsorption of cadmium onto sediment. The model has been used to satisfactorily predict the extent of adsorption over the pH range of 4.5-7.0.

引用

页码：225 / 233

页数：9

共 30 条

[1]

[Anonymous], P INT C MET ENV

[2] THE ADSORPTION OF CU, PB, ZN, AND CD ON GOETHITE FROM MAJOR ION SEA-WATER [J].