CN and heavy metal removal through formation of layered double hydroxides from mixed CN-containing electroplating wastewaters and pickle acid liquor

Xu, Yunfeng, Zhang, Jia, Zhou, Jizhi, Chen, Chun, Liu, Qiang, Qian, Guangren and Xu, Zhi Ping (2013) CN and heavy metal removal through formation of layered double hydroxides from mixed CN-containing electroplating wastewaters and pickle acid liquor. Chemical Engineering Journal, 215-216 411-417. doi:10.1016/j.cej.2012.10.074


Author Xu, Yunfeng
Zhang, Jia
Zhou, Jizhi
Chen, Chun
Liu, Qiang
Qian, Guangren
Xu, Zhi Ping
Title CN and heavy metal removal through formation of layered double hydroxides from mixed CN-containing electroplating wastewaters and pickle acid liquor
Journal name Chemical Engineering Journal   Check publisher's open access policy
ISSN 1385-8947
Publication date 2013-01-15
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.cej.2012.10.074
Volume 215-216
Start page 411
End page 417
Total pages 7
Place of publication Netherlands
Publisher Elsevier
Collection year 2014
Language eng
Formatted abstract
The common ligand CN has been widely used in some core industries, such as electroplating and mining, as it significantly enhances process efficiency and product quality. The use of CN however generates a vast amount of CN-containing heavy-metal wastewaters, harming both environmental and human health. In this research paper, we present a co-precipitation strategy to treat CN-containing heavy-metal wastewaters (Ni, Zn, Cr and Fe) and pickle acid liquor (Fe) via formation of layered double hydroxide (LDH). Our experimental data demonstrate that Zn, Cr and Fe were completely removed and Ni was reduced from 100–400 to 3.0 mg/L, and about 60% CN was simultaneously removed (from 6–8 to 2.5–4 mg/L). This efficiency was constantly achieved under varied experimental conditions, including a wide range of heavy metal concentrations and their ratio with pH in 7–11 at 25–60 °C.
Keyword CN-containing heavy metal wastewaters
Pickle acid liquor
Layered double hydroxide (LDH)
Aqueous-solution
Water
Adsorption
Hydrotalcites
Catalysis
Fe
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 12 November 2012

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