ADSORPTION CHARACTERISTICS OF CU(II) IN THE PRESENCE OF CHELATING-AGENTS

被引：134

作者：

ELLIOTT, HA ^{[1
]}

HUANG, CP ^{[1
]}

机构：

[1] UNIV DELAWARE,DEPT CIVIL ENGN,PROGRAM ENVIRONM ENGN,NEWARK,DE 19711

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 1979年 / 70卷 / 01期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0021-9797(79)90005-5

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：

The adsorption characteristics of Cu(II) in the presence of chelating agents was investigated in the laboratory. The results showed that the presence of chelating agents improved the extent of Cu(II) adsorption, although ligand:Cu(II) ratio = 1:1 seemed to be important to assure optimum Cu(II) adsorption, at least in the Cu(II)-NTA-γ-Al2O3 system. Electrostatic interaction appeared to be an important mechanism for complexed Cu(II) adsorption. However, a finite adsorption of Cu(II) complexes of NTA, glycine, and aspartic acid was observed at the pHzpc of γ-Al2O3. This suggests the presence of specific chemical interaction. The adsorbed Cu(II) species in the presence of chelating agents, such as NTA, is the complexed form, i.e., CuNTA-. A model has been proposed to qualitatively explain the attachment of CuNTA- species onto γ-Al2O3 surface. © 1979.

引用

页码：29 / 45

页数：17

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