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Treatment Characteristics of Plating Wastewater Containing Freecyanide, Cyanide Complexes and Heavy Metals (II) - Effect of Aldehyde Compounds and Polysulfide -  

Jung, Yeon-Hoon (Department of Energy and Environmental Eng, Graduate School of Energy and Environment Seoul National University of Technology)
Lee, Soo-Koo (Department of Environmental Engineering, Seoul National University of Technology)
Publication Information
Journal of Korean Society on Water Environment / v.26, no.4, 2010 , pp. 687-690 More about this Journal
Abstract
The objective of this study is to investigate the effect of aldehyde compounds and ploysulfide as accelerating agents on removal of heavy metals and CN in plating wastewater. As a results of the experiments, the removal efficiency of cyanide using the formaldehyde type of aldehydes was the highest at pH 9. Next types were sodium formaldehyde bisulfite addut> paraldehyde> paraformaldehyde. Also, optimum pH and dosage for treating the residual heavy metals by using polysulfide were pH 9 and 30 mg/L, respectively. The removal efficiencies of cyanide, chromium, zinc and copper were above 96.7% at optimum condition.
Keywords
Aldehydes; Cyanides; Heavy metal; Plating wastewater; Polysulfide;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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