Journal
DESALINATION AND WATER TREATMENT
Volume 57, Issue 15, Pages 6644-6651Publisher
DESALINATION PUBL
DOI: 10.1080/19443994.2015.1012560
Keywords
Electrocoagulation; Landfill leachate; COD; NH4-N
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Funding
- Kermanshah University of Medical Sciences, Kermanshah, Iran [92042]
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Landfilling leachate contains a high concentration of organic and inorganic pollutants. The present study was aimed to evaluate the efficiency of the electrocoagulation system in removing chemical oxygen demand (COD) and ammonia-nitrogen (NH4-N) from leachate. The paper investigated the factors affecting removal efficiency such as current density (187.5, 375, and 562.5 A/m(2)), electrode material (Al and Fe), and electrolysis time and pH of the solution (6.5 +/- 0. 2). The results indicated that, in optimum conditions, the highest COD and NH4-N removal efficiencies were 66 and 63%, respectively. According to the results, performance of the Al electrode was better than that of the Fe electrode in terms of COD and NH4-N removal. Therefore, the results showed that electrocoagulation can be applied for the leachate pretreatment as a feasible and reliable technique.
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