Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 92, Issue 3, Pages 407-418Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2010.11.011
Keywords
Heavy metal wastewater; Treatment technology; Review
Categories
Funding
- National Natural Science Foundation of China [51008084]
- Natural Science Foundation of Guangdong Province [9451009001002753]
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Heavy metal pollution has become one of the most serious environmental problems today. The treatment of heavy metals is of special concern due to their recalcitrance and persistence in the environment. In recent years, various methods for heavy metal removal from wastewater have been extensively studied. This paper reviews the current methods that have been used to treat heavy metal wastewater and evaluates these techniques. These technologies include chemical precipitation, ion-exchange, adsorption, membrane filtration, coagulation-flocculation, flotation and electrochemical methods. About 185 published studies (1988-2010) are reviewed in this paper. It is evident from the literature survey articles that ion-exchange, adsorption and membrane filtration are the most frequently studied for the treatment of heavy metal wastewater. (C) 2010 Elsevier Ltd. All rights reserved.
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