Magnetic nanomaterials recovered from co-treatment of CN-containing electroplating wastewaters and pickle acid liquor

Zhang, Jia, Xu, Yunfeng, Zhou, Jizhi, Liang, Ying, Chen, Chun, Liu, Qiang, Qian, Guangren and Xu, Zhi Ping (2013) Magnetic nanomaterials recovered from co-treatment of CN-containing electroplating wastewaters and pickle acid liquor. Separation and Purification Technology, 120 186-190. doi:10.1016/j.seppur.2013.10.009


Author Zhang, Jia
Xu, Yunfeng
Zhou, Jizhi
Liang, Ying
Chen, Chun
Liu, Qiang
Qian, Guangren
Xu, Zhi Ping
Title Magnetic nanomaterials recovered from co-treatment of CN-containing electroplating wastewaters and pickle acid liquor
Journal name Separation and Purification Technology   Check publisher's open access policy
ISSN 1383-5866
1873-3794
Publication date 2013-01-01
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.seppur.2013.10.009
Open Access Status Not Open Access
Volume 120
Start page 186
End page 190
Total pages 5
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon
Language eng
Subject 1602 Criminology
1506 Tourism
Abstract CN- has been widely used in electroplating and mining, generating a vast amount of CN-containing heavy-metal wastewaters. In this research paper, we present a strategy to recycle these cyanide-containing electroplating wastewaters (Ni, Zn, Cr and Fe) with pickle acid liquors (Fe) and produce magnetic nanomaterials. The process includes formation of layered double hydroxides (LDH) as the intermediates and their conversion to valuable magnetic materials. LDH intermediates were first precipitated from these two wastewaters and then thermally converted into superparamagnetic mixed oxide nanomaterials, with the crystallite size of 10-25 nm and the saturation magnetization up to 40 emu/g. Specifically, during the conversion, secondary pollution resulting from CN- was significantly reduced. This research thus demonstrates a cost-effective and safe way to treat CN-containing wastewaters and transfer to useful nanomaterials.
Keyword Electroplating wastewaters
Layered double hydroxide (LDH)
Magnetic nanomaterials
Pickle acid liquor
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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