To enhance the generation of hydrogen peroxide (H2O2), a modified graphite felt cathode doped with nitrogen and boron was developed and used in peroxi-coagulation system to degrade dimethyl phthalate (DMP). After a simple modification method, the yield of H2O2 on cathode increased from 9.39 to 152.8 mg/L, with current efficiency increased from 1.61 to 70.3%. Complete degradation of DMP and 80% removal of TOC were achieved within 2 h at the optimal condition with pH of 5, cathodic potential of - 0.69 V (vs. SCE), oxygen aeration, and electrode gap of 1 cm. Possible mechanism with synergistic effect of electro-Fenton and electrocoagulation process in the peroxi-coagulation system was revealed via quenching experiments. The prospect of this system in the effluent of landfill leachate and domestic sewage was studied, achieving 50% and 61% of DMP removal in 2 h. This efficient system with simple modified cathode had promising prospects in practical applications.

中文翻译：

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掺杂氮和硼的石墨毡的改性，以增强过氧化物混凝系统和机理中邻苯二甲酸二甲酯的去除。

为了增加过氧化氢（H2O2）的产生，开发了一种掺杂有氮和硼的改性石墨毡阴极，并将其用于过氧化物凝结系统中以降解邻苯二甲酸二甲酯（DMP）。通过简单的修改方法，阴极上H2O2的产率从9.39增加到152.8 mg / L，电流效率从1.61增加到70.3％。在最佳条件下，pH值为5，阴极电位为-0.69 V（vs. SCE），氧气通气，电极间隙为1 cm，在2 h内DMP完全降解，TOC去除80％。通过淬灭实验揭示了在过氧化物凝结系统中电芬顿与电凝过程协同作用的可能机理。研究了该系统在垃圾渗滤液和生活污水中的应用前景，在2小时内达到50％和61％的DMP去除率。这种带有简单修饰阴极的高效系统在实际应用中具有广阔的前景。