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http://dx.doi.org/10.7844/kirr.2018.27.6.44

Study on Synthesis of Fine Copper Powder by Electro-refining from Copper Containing Sludge  

Lee, Jin-Yeon (Korea Institute of Industrial Technology)
Son, Seong Ho (Korea Institute of Industrial Technology)
Park, Sung Cheol (Korea Institute of Industrial Technology)
Jung, Yeon Jae (Korea Institute of Industrial Technology)
Kim, Yong Hwan (Korea Institute of Industrial Technology)
Lee, Man-seung (Mokpo National University)
Publication Information
Resources Recycling / v.27, no.6, 2018 , pp. 44-52 More about this Journal
Abstract
In this study, copper was recovered from copper containing sludge by selectively controlling electro-refining process conditions in copper sulfate electrolyte solution. Electro-refining process was performed by LSV (Linear Sweep Voltammetry) result according to copper sulfate electrolyte solution concentration, applied current density, additive type and concentration. SEM (Scanning Electron Microscope) and PSA (Particle Size Analyzer) were used to analyze the shape and size of copper powder. In the 0.1 ~ 0.4 M copper sulfate electrolyte solution without organic additives, the copper powder size decreased as the applied current density became closer to the limiting current density and the copper powder size tended to decrease in 0.2 ~ 0.3 M copper sulfate electrolyte solution. In addition, when the shape and size of the copper powder were analyzed by adding various types and concentrations of organic additives to the previous experimental, fine spherical copper powder having the smallest size (nm) was obtained under the condition of cellulose type additive 2,000 ppm.
Keywords
Copper sludge; Copper recycling; Electro-refining; Copper powder; Organic additive;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 I. Masavetas et al., 2009 : Production of copper powder from printed circuit boards by electrodeposition, Global NEST Journal, 11, pp.241-247.
2 Younghee Ko Kim and Hyun Baek Ko, 2001 : A study of the recovery of shape-controlled copper oxide from the waste etchant of PCB industry, J. of. Kor. Inst. Resources Recycling, 10(6), pp.15-21.
3 Yuri F. Guimaraes, Iranildes D. Santos, Achilles J. B. Dutra, 2014 : Direct recovery of copper from printed circuit boards (PCBs) powder concentrate by a simultaneous electroleaching-electrodeposition process, Hydrometallugy, 149, pp.63-70.   DOI
4 Vijayaram, R., Nesakumar, D. and Chandramohan, K., 2013 : Copper extraction from the discarded printed circuit board by leaching, Res. J. Engineering Sci., 2(1), pp.11-14.
5 Mecucci A. and Scott K., 2002 : Leaching and electrochemical recovery of copper, lead and tin from scrap printed circuit boards, J. Chem. Technol. Biotechnol., 77, pp.449-457.   DOI
6 Younghee Ko Kim and Hyun Baek Ko, 2001 : A study of the recovery of shape-controlled copper oxide from the waste etchant of PCB industry, J. of. Kor. Inst. Resources Recycling, 10(6), pp.15-21.
7 Sang-hun Lee, Kyoungkeun Yoo, and Jae-chun Lee, 2018 : Preparation of $Cu_2O$ Powder in NaOH solution Using CuCl Obtained from Spent Printed Circuit Boards Etchant, J. Korean Soc. Miner. Energy Resour. Eng., 55(3), pp.194-199.   DOI
8 K. S. Doh, et al., 1997: A study on the recycling of cupric oxide by using copper-containing wastewater, J. Korea Solid Wastes Engineering Society, 14(7), pp.667-672.
9 Byung-Su Kim, Lee, Jae-Chun Lee, and Kwang-Ho Lee, 2007 : A novel process for extracting valuable metals from waste electric and electronic scrap using waste copper slag by a high temperature melting method, Journal of the Korean Institute of Resources Recycling, 16(3), pp.27-33.