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首页> 外文期刊>International Journal of Electrochemical Science >A High-Performance Wastewater Treatment System for Orange II Degradation Using a Boron-doped Diamond Electrode and Enhanced by Zeolite-TiO2 Photocatalyst
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A High-Performance Wastewater Treatment System for Orange II Degradation Using a Boron-doped Diamond Electrode and Enhanced by Zeolite-TiO2 Photocatalyst

机译：沸石掺杂TiO 2 光催化剂增强的硼掺杂金刚石电极降解橙Ⅱ的高效废水处理系统

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摘要

A wastewater treatment system has been studied which is composed of an electrochemical cell and aphotocatalysis unit. A boron-doped diamond (BDD) electrode and TiO2-loaded zeolite (zeolite-TiO2)were used in the electro-photo process, and the joint treatment efficiency was assessed Orange IIdegradation. The photo-electro treatment of Orange II in aqueous solution was monitored using acombination of HPLC and UV-visible absorption spectroscopy methods. Zeolite improves the photoefficiency of titanium dioxide due to synergistic effects of the improved generation of active radicals(S2O82- and OH*). Orange II underwent a further rapid degradation by the introduction of zeolite-TiO2due to strong adsorption and space effects. The degradation activity to Orange II follows thedecreasing order: BDD-zeolite-TiO2 > BDD > zeolite-TiO2. The degradation rate was seen to increasewith OH* radicals resulted from S2O82- which produced on the BDD surface and by the zeolite-TiO2catalyst. Orange II could be almost completely degraded to CO2 and H2O after 180 min of electrolysistime by this joint treatment system.
机译：已经研究了由电化学电池和光催化单元组成的废水处理系统。在电光过程中使用了掺硼金刚石（BDD）电极和负载TiO2的沸石（zeolite-TiO2），并评估了联合处理效率Orange II降解。使用HPLC和UV-可见吸收光谱法相结合的方法监测Orange II在水溶液中的光电处理。沸石由于活性自由基（S2O82-和OH *）产生的改善而产生了协同效应，从而提高了二氧化钛的光效率。由于强吸附和空间效应，通过引入沸石-TiO2，Orange II进一步快速降解。对橙II的降解活性按降序排列：BDD-沸石-TiO2> BDD>沸石-TiO2。可以看出，降解速率随BDD表面产生的S2O82-和沸石-TiO2催化剂产生的OH *自由基的增加而增加。通过这种联合处理系统，经过180分钟的电解时间后，Orange II几乎可以完全降解为CO2和H2O。

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