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首页> 外文期刊>Chinese science bulletin >Activated carbon adsorption-advanced electro-oxidative regeneration for the treatment of biorefractory organic pollutants
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Activated carbon adsorption-advanced electro-oxidative regeneration for the treatment of biorefractory organic pollutants

机译：活性炭吸附-高级电氧化再生处理生物难降解有机污染物

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摘要

The wastewater containing toxic and biorefractory pollutants such as aromatic compounds cannot be treated by conventional action due to their toxicity and structure stability, which has been one of the key technical difficulties in wastewater treatment in China. Advanced oxidation processes (AOPs) and activated carbon (AC) adsorption are two widely investigated treatment methods. Recently, advanced electrochemical oxidative process (AEOP), the newly developed AOPs, has attracted much more interest to wastewater treatment due to its easy applicability to automation, high efficiency, and environmental compatibility'1 3]. Hydroxyl radical, possessing very strong oxidation potential, can be formed by polarization on high oxygen over-voltage electrodes such as PbO_2- It was reported'41 that mass transfer would become the decisive factor when the pollutant concentration was relatively low, which resulted in the degradation only occurring on the surface of the electrodes rather than the bulk of the solution. So that many degradation intermediates would stay on the anode and led to the electrode fouling, which reduced the degradation efficiency. Therefore, it is urgently necessary to optimize the electrochemical reactor to enhance the time-space efficiency for organic pollutants degradation.
机译：含有毒性和难降解污染物（如芳香族化合物）的废水由于其毒性和结构稳定性无法通过常规作用进行处理，这已成为中国废水处理中的关键技术难题之一。高级氧化工艺（AOP）和活性炭（AC）吸附是两种广泛研究的处理方法。最近，先进的电化学氧化工艺（AEOP），即新开发的AOP，由于其易于实现自动化，高效和环境兼容性而吸引了更多废水处理的兴趣[1 3]。在高氧过电压电极（如PbO_2）上极化可形成具有很强氧化潜能的羟基自由基。据报道[41]当污染物浓度相对较低时，传质将成为决定性因素，导致降解仅发生在电极表面，而不是溶液的大部分。因此许多降解中间体会留在阳极上并导致电极结垢，从而降低了降解效率。因此，迫切需要优化电化学反应器以提高有机污染物降解的时空效率。

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