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Removal of pesticide chlorobenzene by anodic degradation: Variable effects and mechanism
Journal of Saudi Chemical Society ( IF 5.8 ) Pub Date : 2021-08-13 , DOI: 10.1016/j.jscs.2021.101326
Amel Ouni 1, 2 , Nejmeddine Rabaaoui 1 , Lassaad Mechi 3 , Nasreddine Enaceur 1, 2 , Abdulmohsen K.D. AlSukaibi 3 , Eid M. Azzam 3 , Khalaf M. Alenezi 3 , Younes Moussaoui 2, 4
Affiliation  

The oxidation of chlorobenzene (CB) was studied by electrochemical electrolysis using boron-doped diamond (BDD), PbO2 or platine (Pt) as anode and graphite bar as cathode. The effect of applied current density, supporting electrolyte and initial pH value were also studied. The results demonstrated that BDD anode had the best effectiveness and accomplishment of electrochemical degradation of CB compared to PbO2 and Pt anodes. For a current density of 20 mA/cm2 and at pH = 3, the elimination of COD and TOC were about 97% and 98%, respectively, after 360 min of electrolysis with the BDD anode. Pseudo-first order kinetics appears to be the most appropriate to describe the degradation of chlorobenzene. The electrochemical mechanism of chlorobenzene on BDD was proposed based on the identified intermediates.



中文翻译:

阳极降解去除农药氯苯:变化的影响和机制

以掺硼金刚石(BDD)、PbO 2或铂(Pt)为阳极,石墨棒为阴极,通过电化学电解研究了氯苯(CB)的氧化。还研究了施加的电流密度、支持电解质和初始pH值的影响。结果表明,与 PbO 2和 Pt 阳极相比,BDD 阳极具有最佳的 CB 电化学降解效率和成就。对于 20 mA/cm 2的电流密度在 pH = 3 时,使用 BDD 阳极电解 360 分钟后,COD 和 TOC 的消除率分别约为 97% 和 98%。伪一级动力学似乎最适合描述氯苯的降解。基于鉴定的中间体,提出了氯苯对BDD的电化学机理。

更新日期:2021-08-27
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