Effective removal of coordinated copper from wastewater using a new dithiocarbamate-type supramolecular heavy metal precipitant

被引：109

作者：

Fu, Fenglian

Zeng, Haiyan

Cai, Qinhong

Qiu, Rongliang

Yu, Jimmy

Xiong, Ya ^{[1
]}

机构：

[1] Zhongshan Univ, Sch Environm Sci & Engn, Guangzhou 510275, Peoples R China

[2] Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou 510090, Peoples R China

[3] Chinese Univ Hong Kong, Dept Chem, Environm Sci Programme, Hong Kong, Peoples R China

来源：

CHEMOSPHERE | 2007年 / 69卷 / 11期

基金：

中国国家自然科学基金;

关键词：

heavy metal; 1,3,5-Hexahydrotriazinedithiocarbamate (HTDC); Copper; Coordination supramolecular (CS) precipitant;

D O I：

10.1016/j.chemosphere.2007.05.063

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A new dithiocarbamate-type heavy metal precipitant, Sodium 1,3,5-hexahydrotriazinedithiocarbamate (HTDC), was prepared and used to remove coordinated copper from wastewater. In the reported dithiocarbamate-type precipitants, HTDC possesses the highest percentage of the effective functional groups. It could effectively precipitate copper to less than 0.5 mg l(-1) from both synthetic and actual industrial wastewater containing CuEDTA in the range of pH 3-9. UV-vis spectral investigation and elemental analysis suggested that the precipitate was a kind of coordination supramolecular compound, [CU3(HTDC)(2)](n). The toxicity characteristic leaching procedure (TCLP) and semi-dynamic leaching test (SDLT) indicated that the supramolecular precipitate was non-hazardous and stable in weak acid and alkaline conditions. Tests of an anion exchange resin D231 provided a clue to simultaneously remove excess HTDC and residual CuEDTA in practical process of wastewater treatment. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1783 / 1789

页数：7

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