Degradation of organics in reverse osmosis concentrate by electro-Fenton process.
Degradation of organics in reverse osmosis concentrate by electro-Fenton process.
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DOI：
10.1016/j.jhazmat.2012.02.070
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发表时间：
2012-05
影响因子：
13.6
通讯作者：
Ming-hua Zhou;Qin-Bo Tan;Qian Wang;Yongli Jiao;N. Oturan;M. Oturan
中科院分区：
文献类型：
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作者：
Ming-hua Zhou;Qin-Bo Tan;Qian Wang;Yongli Jiao;N. Oturan;M. Oturan
本文首次研究了以石墨毡为阴极的电fenton法去除高盐度反渗透（RO）浓缩液中的有机污染物。为了深入了解这一过程，还研究了过氧化氢的原位生成。通过考察铁离子浓度、初始pH和阴极电位等重要操作参数对COD去除率和能耗的影响，优化了COD去除率和能耗。在阴极电位为- 0.72V、Fe3+浓度为0.2mM的条件下，处理3h COD去除率可达62%以上，满足当地废水排放要求（COD <50mg/L）。它证实了电fenton工艺处理RO精矿的可行性，因为它在很宽的pH范围内具有成本效益。
The present work studied, for the first time, the removal of organic pollutants from a high-salinity reverse osmosis (RO) concentrate by electro-Fenton approach using a graphite-felt as cathode. To gain insights into the process, the in situ generation of hydrogen peroxide was also investigated. The COD removal efficiency and energy consumption were optimized by investigating the effects of some important operating parameters such as ferric ion concentration, initial pH and cathodic potential. Under the conditions of cathodic potential at −0.72V and Fe3+concentration 0.2mM, more than 62% COD could be removed in 3h treatment, meeting the local wastewater discharge requirement (COD <50mg/L). It confirmed the feasibility of electro-Fenton process for the treatment of RO concentrate accounting for its cost-effectiveness in wide pH ranges.