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
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Official URL: http://dx.doi.org/10.1016/S0011-9164(96)00139-7
Abstract
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.
| Item Type: | Article |
|---|---|
| Keyword: | Removal, Heavy metal, Plating, Rinse wastewater, Ion exchange |
| Faculty or Institute: | Faculty of Engineering |
| Publisher: | Elsevier |
| DOI Number: | 10.1016/S0011-9164(96)00139-7 |
| ID Code: | 8740 |
| Deposited By: | Nor Asmalisa Osman |
| Deposited On: | 15 Dec 2010 12:18 |
| Last Modified: | 15 Dec 2010 12:25 |
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