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Treatment of wastewater containing methyl orange dye by fluidized three dimensional electrochemical oxidation process integrated with chemical oxidation and adsorption
Journal of Environmental Management ( IF 8.0 ) Pub Date : 2022-03-01 , DOI: 10.1016/j.jenvman.2022.114775 Xiangjing Liu 1 , Zhimin Chen 1 , Wenqiao Du 1 , Pengfei Liu 1 , Long Zhang 1 , Fengwei Shi 1
Journal of Environmental Management ( IF 8.0 ) Pub Date : 2022-03-01 , DOI: 10.1016/j.jenvman.2022.114775 Xiangjing Liu 1 , Zhimin Chen 1 , Wenqiao Du 1 , Pengfei Liu 1 , Long Zhang 1 , Fengwei Shi 1
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The integrated high-efficiency treatment technology for dye industry wastewater is one of the current research hot topic in industrial wastewater treatment area. This article reports a new fluidized three-dimensional electrochemical treatment process integrating activated carbon adsorption, direct electro-oxidation and ·OH oxidation. In the process, activated carbon is polarized in a fluidized bed electrochemical reactor to enhance the direct electro-oxidation and ·OH oxidation, and there is a synergistic effect of effective adsorption and electrochemical oxidation to strengthen the treatment efficiency. When 200 mg/L methyl orange is processed, its removal rate reaches 99.9% in 30min, and the synergistic efficiency is 57.3%. After 8 cycles of activated carbon reusage in the process, the removal rate of methyl orange still kept at 89.2%. It is also founded that the activated carbon maintains 64.5% of its original adsorption capacity during the cycle. These results shows its interesting application potential in the fields of high-efficiency, low-cost and green treatment of various industrial organic wastewaters. Further improvements should focus on the development of continuous operation model and the improvement of the activated carbon electro-catalytic performance and the practical regeneration ways of the activated carbon particle electrodes.
中文翻译：
化学氧化吸附一体化流态化三维电化学氧化工艺处理甲基橙染料废水
染料工业废水一体化高效处理技术是当前工业废水处理领域的研究热点之一。本文报道了一种集活性炭吸附、直接电氧化和·OH氧化于一体的流态化三维电化学处理新工艺。该工艺中，活性炭在流化床电化学反应器中进行极化，增强直接电氧化和·OH氧化，有效吸附和电化学氧化协同作用，增强处理效率。当处理200mg/L甲基橙时，30min去除率达到99.9%，协同效率为57.3%。工艺过程中活性炭回用8次后，甲基橙去除率仍保持在89.2%。研究还发现，活性炭在循环过程中仍保持其原始吸附容量的64.5%。这些结果显示了其在高效、低成本、绿色处理各种工业有机废水领域的有趣应用潜力。进一步的改进应集中于连续运行模式的开发、活性炭电催化性能的改进以及活性炭颗粒电极的实用再生方式。
更新日期：2022-03-01
中文翻译：
化学氧化吸附一体化流态化三维电化学氧化工艺处理甲基橙染料废水
染料工业废水一体化高效处理技术是当前工业废水处理领域的研究热点之一。本文报道了一种集活性炭吸附、直接电氧化和·OH氧化于一体的流态化三维电化学处理新工艺。该工艺中，活性炭在流化床电化学反应器中进行极化，增强直接电氧化和·OH氧化，有效吸附和电化学氧化协同作用，增强处理效率。当处理200mg/L甲基橙时，30min去除率达到99.9%，协同效率为57.3%。工艺过程中活性炭回用8次后，甲基橙去除率仍保持在89.2%。研究还发现，活性炭在循环过程中仍保持其原始吸附容量的64.5%。这些结果显示了其在高效、低成本、绿色处理各种工业有机废水领域的有趣应用潜力。进一步的改进应集中于连续运行模式的开发、活性炭电催化性能的改进以及活性炭颗粒电极的实用再生方式。
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