Electrochemical Recovery of Metals from Cadmium Wastewater

被引：6
|
作者：
Wang, Yanfei [1 ]
Xu, Wenjie [1 ]
Zhuo, Qiongfang [2 ]
Xu, Zhencheng [2 ]
Guo, Qingwei [2 ]
机构：
[1] Univ South China, Sch Chem & Chem Engn, Hengyang 421001, Peoples R China
[2] Minist Environm Protect, South China Inst Environm Sci, Guangzhou 510655, Guangdong, Peoples R China
来源：
CHEMISTRY LETTERS | 2014年 / 43卷 / 08期
基金：
中国国家自然科学基金;
关键词：
ADSORPTION; COPPER;
D O I：
10.1246/cl.140372
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Recovery of cadmium in wastewater was investigated by an electrochemical deposition approach in a multianode and multicathode cell in this study. The effects of initial concentration, initial pH, current density, and complexing agents on the recovery of cadmium were examined. Acidic media was found to improve the recovery efficiency. When the current density was 4.46 mA cm(-2), the mass was almost increased to be maximum after electrochemical deposition for 90 min. With further increase in current density, little increase of recovery ratio was observed. Presence of aqueous ammonia increased the deposition rate. X-ray diffraction (XRD) analysis demonstrated that the deposits were composed of cadmium and cadmium hydroxide.
引用
收藏
页码：1312 / 1314
页数：3
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