alexa Separation and Recovery of Nickel and Copper from Multi
ISSN: 2165-784X

Journal of Civil & Environmental Engineering
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Research Article

Separation and Recovery of Nickel and Copper from Multi-Metal Electroplating Sludge by Co-Extracting and Selective Stripping

Taihong Shi1*, Shujian Zou1, Jinfeng Liu1, Lina Zuo1, Can Lv1, Shiguo Jia1 and Rong Liang Qiu2
1School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, P.R. China
2Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou 510275, P.R. China
Corresponding Author : Taihong Shi
School of Environmental Science and Engineering
Sun Yat-Sen University
Guangzhou 510275, P.R. China
Tel: 0086- 020-84115065
Fax: 0086-020-39332690
E-mail: [email protected]
Received November 02, 2011; Accepted December 12, 2011; Published December 14, 2011
Citation: Shi T, Zou S, Liu J, Zuo L, Lv C, et al. (2011) Separation and Recovery of Nickel and Copper from Multi-Metal Electroplating Sludge by Co-Extracting and Selective Stripping. J Civil Environment Engg 1:103. doi:10.4172/2165-784X.1000103
Copyright: © 2011 Shi T, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

N902 diluted with kerosene was used to co-extract copper and nickel from the ammoniac-carbonate leaching liquor of multi-metal electroplating sludge. The influence factors of the ammoniac-carbonate leaching and the extracting process on the recovery of copper and nickel were studied. The leaching rate of copper and nickel can reach to 90 % and the other metal ions are less leached under the optimal leaching condition. In order to optimize the extraction condition, the L9 (34) intersecting experiment of co-extraction of copper and nickel ions was tested. For a typical ammonium carbonate leaching solution containing Cu2+ 2.23 g/L, Ni2+ 3.31 g/L, Cr <0.02 g/L and pH 9.0-9.5, the optimal conditions of co-extraction, NH3 escape and selective stripping of nickel and copper were established. The percentage of extraction was more than 97.0 % for both copper and nickel, and the stripping percentages were 99.0 % and 99.3 % for copper and nickel, respectively. This study clearly demonstrates that N902 is suitable for the selective separation and recovery of copper and nickel from the multi-metal electroplating sludge in pure sulfate product as an extractant.

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