Phthalates, as additives in the plastic production process, were able to enter the water environment, causing huge risks to ecological environment and human health. The potential of phthalates elimination in aqueous using sodium percarbonate (SPC) activated by discharge plasma (marked as “SPC + plasma”) was evaluated, with dimethyl phthalate (DMP) as a model pollutant. Experimental results showed that about 92.1% of DMP was eliminated in the “SPC + plasma” system with the treatment time of 30 min, which was 30.7% higher than that in sole plasma system, and the synergetic intensity for DMP elimination reached up to 127.0; and the energy yield was also raised by 131%. H₂O₂ and ·OH radicals formation were promoted but ozone concentration decreased in the “SPC + plasma” system. Appropriate SPC dosage benefited DMP elimination, and the synergetic intensity increased from 2.0 to 127.0 as the SPC dosage increased from 0.06 mmol L^-1 to 0.12 mmol L^-1. ·OH radicals, O₂·^-, ¹O₂, and CO₃·^- played crucial roles in DMP elimination, and the roles of O₂·^- and ¹O₂ were strengthened in the “SPC + plasma” system. Ultraviolet-visible spectroscopy measurement, total content of organic carbon, atomic force microscopy and three-dimensional fluorescence analysis demonstrated that DMP molecular structure was destroyed during treatment, and some smaller molecular fractions were generated. The main intermediates included phthalic acid monomethyl ester, phthalic acid, o-phthalic anhydride, acetic acid, formic acid, and oxalic acid. The possible enhancement mechanisms for DMP elimination in the “SPC + plasma” system were proposed.

邻苯二甲酸酯作为塑料生产过程中的添加剂，能够进入水环境，对生态环境和人体健康造成巨大风险。使用邻苯二甲酸二甲酯（DMP）作为模型污染物，评估了使用放电等离子体（标记为“ SPC +等离子体”）活化的过碳酸钠（SPC）去除水中邻苯二甲酸盐的潜力。实验结果表明，“ SPC +血浆”系统中DMP的去除率约为92.1％，处理时间为30 min，比单一血浆系统中的DMP去除率高30.7％，去除DMP的协同强度高达127.0。 ; 能源产量也提高了131％。H ₂ O ₂和·OH自由基的形成得到促进，但“ SPC +等离子体”系统中的臭氧浓度降低。适当的SPC剂量有利于DMP的消除，并且随着SPC剂量从0.06 mmol L ^-1增加到0.12 mmol L ^-1，协同强度从2.0增加到127.0 。·OH自由基，O ₂ · ^-，¹ O ₂和CO ₃ · ^-在DMP消除中起关键作用，O ₂ · ^-和¹ O ₂发挥作用在“ SPC +等离子”系统中得到了加强。紫外可见光谱测量，有机碳总含量，原子力显微镜和三维荧光分析表明，在处理过程中DMP分子结构被破坏，并产生了一些较小的分子级分。主要中间体包括邻苯二甲酸单甲酯，邻苯二甲酸，邻苯二甲酸酐，乙酸，甲酸和草酸。提出了在“ SPC +等离子体”系统中消除DMP的可能增强机制。