Rapid recovery of dilute copper from a simulated Cu–SDS solution with low-cost steel wool cathode reactor

中山醫學大學機構典藏 CSMUIR > 健康管理學院 > 公共衛生學系暨碩士班 > 期刊論文 > Item 310902500/4421

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/4421

Title:	Rapid recovery of dilute copper from a simulated Cu–SDS solution with low-cost steel wool cathode reactor
Authors:	Chang, Shih-Hsien Kai-Sung Wang, Lui, I-Chun Hu, Pei-I
Contributors:	中山醫學大學公共衛生學系
Keywords:	Steel wool cathode Nonionic surfactant SDS Copper
Date:	2008-06-24
Issue Date:	2012-08-07T07:12:22Z (UTC)
Abstract:	Copper–surfactant wastewaters are often encountered in electroplating, printed circuit boards manufacturing, and metal finishing industries, as well as in retentates from micellar-enhanced ultrafiltration process. A low-cost three-dimensional steel wool cathode reactor was evaluated for electrolytic recovery of Cu ion from dilute copper solution (0.2 mM) in the presence of sodium dodecyl sulfate (SDS), octylphenol poly (ethyleneglycol) 9.5 ether (TX), nonylphenol poly (oxyethylene) 9 ether (NP9) and polyoxyethylene (20) sorbitan monooleate (TW) and also mixed surfactants (anionic/nonionic). The reactor showed excellent copper recovery ability in comparison to a parallel-plate reactor. The reactor rapidly recovered copper with a reasonable current efficiency. 93% of copper was recovered at current density of 1 A m−2 and pH 4 in the presence of 8.5 mM SDS. Initial solution pH, cathodic current density, solution mixing condition, SDS concentration, and initial copper concentrations significantly influenced copper recovery. The copper recovery rate increased with an increase in aqueous SDS concentrations between 5 and 8.5 mM. The influences of nonionic surfactants on Cu recovery from SDS–Cu solution depended not only on the type of surfactants used, but also on applied concentrations. From the copper recovery perspective, TX at 0.1 mM or NP should be selected rather than TW, because they did not inhibit copper recovery from SDS–Cu solution.
URI:	https://ir.csmu.edu.tw:8080/ir/handle/310902500/4421
Relation:	Journal of Hazardous Materials Volume 163, Issues 2–3, 30 April 2009, Pages 544–549
Appears in Collections:	[公共衛生學系暨碩士班] 期刊論文

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