A synergistic process adding peracetic acid (PAA) in electrochemistry (EC) was established to eliminate organic contaminants in water as a novel advanced oxidation process (AOP). The introduced PAA could be activated by the EC system, substituting electrolyte and promoting the methylene blue (MB) removal than the sole PAA and conventional EC systems. A series of scavenging tests demonstrated that the activation products were hydroxyl radical (HO·) and organic radicals (R-O·) in this EC/PAA process, which both played the dominant role for the MB decontamination. The effect of PAA dose, current density, initial pH, and initial MB concentration on the MB decolorization were investigated, and the results indicated that 93.99% MB was removed with the optimized conditions of 3.6 mmol L⁻¹ PAA, 7.5 mmol L⁻¹ H₂O₂, initial pH 3, and 10 mg L⁻¹ MB concentration. The influence of water matrix (Cl⁻, HCO₃⁻, SO₄²⁻, and humic acid) for removing MB was determined, and the results showed that the MB removal was considerably inhibited by these constituents of water. Lastly, the decomposition mechanism for the MB was suggested through the outcome of mass spectrometry. This study demonstrated that the EC/PAA process could be a feasible method, advancing the development of AOP for water treatment.

建立了在电化学 (EC) 中添加过乙酸 (PAA) 的协同工艺，以消除水中的有机污染物，作为一种新型的高级氧化工艺 (AOP)。引入的 PAA 可以被 EC 系统激活，替代电解质并促进亚甲蓝 (MB) 的去除，而不是单独的 PAA 和传统的 EC 系统。一系列的清除试验表明，在该EC/PAA过程中，活化产物是羟基自由基（HO·）和有机自由基（RO·），两者在MB去污中起主导作用。考察了PAA剂量、电流密度、初始pH值、初始MB浓度对MB脱色的影响，结果表明，优化条件为3.6 mmol L ^-1 PAA、7.5 mmol L ，MB脱色率达93.99%^-1 H ₂ O ₂，初始pH 3，和10 mg L ^-1 MB 浓度。确定了水基质（Cl ^-、HCO ₃ ^-、SO ₄ ^2-和腐殖酸）对去除 MB 的影响，结果表明这些水的成分显着抑制了 MB 去除。最后，通过质谱的结果提出了 MB 的分解机制。该研究表明 EC/PAA 工艺可能是一种可行的方法，促进 AOP 用于水处理的发展。