The degradation and mineralization ability of electrochemical processes like electro-oxidation with electrogenerated H₂O₂ (EO-H₂O₂), electro-Fenton (EF) and UVA-assisted photoelectro-Fenton (PEF) has been comparatively studied for solutions of the herbicide S-metolachlor. Solutions of 100 mL have been treated using an undivided cell equipped with an air-diffusion cathode and a boron-doped diamond (BDD) anode. The effect of pH, current density, and Fe²⁺ and S-metolachlor concentrations has been thoroughly studied. The total organic carbon removal profiles have demonstrated the feasibility of almost overall mineralization by EF and PEF after 9 h at 300 mA. The herbicide decays in both treatments informed about the complexation of Fe(III) ions formed from Fenton’s reaction, which decelerated S-metolachlor removal. However, the high oxidation power of BDD anode allowed the gradual mineralization of such complexes. The identification of chlorinated and non-chlorinated degradation byproducts by GC–MS has allowed the proposal of main degradation routes.

比较研究了用电生成的H ₂ O ₂（EO-H ₂ O ₂），电Fenton（EF）和UVA辅助的光电Fenton（PEF）进行电氧化等电化学过程的降解和矿化能力。除草剂S-异丙甲草胺。使用配有空气扩散阴极和掺硼金刚石（BDD）阳极的不分隔池处理100 mL溶液。pH，电流密度和Fe ^2+的影响S-异丙甲草胺的浓度已被彻底研究。总有机碳去除曲线表明，在300 mA下9 h后，通过EF和PEF进行几乎整体矿化的可行性。在两种处理中，除草剂都会腐烂，这说明芬顿反应形成了Fe（III）离子，从而使S-异丙甲草胺的去除速度降低。但是，BDD阳极的高氧化能力使此类配合物逐渐矿化。通过GC-MS鉴定氯化和非氯化降解副产物，可以提出主要的降解途径。