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Total removal of heavy metal from mixed plating rinse wastewater


Sapari, Nasiman and Idris, Azni and Ab. Hamid, Noor Hisham (1996) Total removal of heavy metal from mixed plating rinse wastewater. Desalination, 106 (1-3). pp. 419-422. ISSN 0011-9164; ESSN: 1873-4464

Abstract / Synopsis

A mixed plating rinse wastewater containing zinc, hexavalent chromium, trivalent chromium, and cyanide with total dissolved solids of 424 mg/1 was treated by a model consisting of a sand filter and ion exchange columns. A strongly acidic cation resin in hydrogen form and a strongly basic anion resin in hydroxide form were used in the columns as cationic and anionic exchangers, respectively. The cationic and anionic exchangers were regenerated by using 2% H2SO4 and 5% NaOH, respectively. A 100% removal of zinc, total chromium, hexavalent chromium and trivalent chromium was achieved in the studies. Very high removal of total dissolved solids, cyanide and hardness level was achieved at 98.9%, 99.9% and 96.5%, respectively. The conductivity of wastewater was reduced from an average of 358 μs/cm to 5 μs/cm. The case study has shown that treatment systems using cationic and anionic resin were able to treat a mixed plating bath effluent to comply with the standard discharge under the Malaysian Environmental Quality (Sewage and Industrial Effluents) Regulation, 1979.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Faculty of Science and Environmental Studies
DOI Number:
Publisher: Elsevier
Keywords: Removal; Heavy metal; Plating; Rinse wastewater; Ion exchange
Depositing User: Nor Asmalisa Osman
Date Deposited: 15 Dec 2010 04:18
Last Modified: 30 Jun 2016 06:42
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