Journal
JOURNAL OF ENVIRONMENTAL MANAGEMENT
Volume 90, Issue 5, Pages 1663-1679Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jenvman.2008.12.011
Keywords
Electrocoagulation (EC); Electrocoagulation/flotation (ECF) processes; Water treatment; Industrial wastewater treatment
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The word electrocoagulation (EC) will be sometimes used with electroflotation (EF) and can be considered as the electrocoagulation/flotation (ECF) process. Through the process of electrolysis, coagulating agents such as metal hydroxides are produced. When aluminium electrodes are used, the aluminium dissolves at the anode and hydrogen gas is released at the cathode. The coagulating agent combines with the pollutants to form large size flocs. As the bubbles rise to the top of the tank they adhere to particles suspended in the water and float them to the surface. In fact, a conceptual framework of the overall ECF process is linked to coagulant generation, pollutant aggregation, and pollutant removal by flotation and settling when it has been applied efficiently to various water and wastewater treatment processes. This review paper considers a significant number of common applications of EC and ECF processes which have been published in journal and conference papers. (C) 2008 Elsevier Ltd. All rights reserved.
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