Treatment of dairy wastewaters by electrocoagulation using mild steel electrodes
Treatment of dairy wastewaters by electrocoagulation using mild steel electrodes
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DOI：
10.1016/j.jhazmat.2006.04.009
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发表时间：
2006-09-21
影响因子：
13.6
通讯作者：
ozacar, Mahmut
中科院分区：
文献类型：
--
作者：
Sengil, I. Ayhan;ozacar, Mahmut
使用直流电 (DC) 电絮凝 (EC) 对乳品废水中 COD 和油脂的去除进行了实验研究。在乳制品废水的 EC 中，考察了初始 pH、电解时间、COD 初始浓度、电导率和电流密度的影响。以铁作为牺牲阳极可以有效去除水相中的COD和油脂。每个操作变量的最佳操作范围都是通过实验确定的。批量实验结果表明，水相COD和油脂得到有效去除。总体COD和油脂去除率分别达到98%和99%。 18,300 mg COD/L和4570 mg油脂/L的最佳电流密度、pH和电解时间分别为0.6 mA/cm(2)、7和1 min。平均能耗为 0.003 kWh/kg COD。 (c) 2006 Elsevier B.V. 保留所有权利。
The removal of COD and oil-grease from dairy wastewater was experimentally investigated using direct current (DC) electrocoagulation (EC). In the EC of dairy wastewater, the effects of initial pH, electrolysis time, initial concentration of COD, conductivity and current density were examined. The COD and oil-grease in the aqueous phase were effectively removed when iron was used as sacrificial anode. The optimum operating range for each operating variable was experimentally determined. The batch experimental results revealed that COD and oil-grease in aqueous phase was effectively removed. The overall COD and oil-grease removal efficiencies reached 98 and 99%, respectively. The optimum current density, pH and electrolysis time for 18,300 mg COD/L and 4570 mg oil-grease/L were 0.6 mA/cm(2), 7 and 1 min, respectively. Mean energy consumption was 0.003 kWh/kg of COD. (c) 2006 Elsevier B.V. All rights reserved.