The establishment of economical and eco-friendly technologies for water treatment is a crucial issue for the realization of a sustainable society. Plasma-based treatments are promising methods for the decomposition of persistent organic compounds. This progress report summarizes recent improvements to plasma-based water treatment technologies by focusing on two types of contaminated solutions: solutions containing high concentrations of acetic acid and solutions containing surfactants, such as perfluorooctane sulfonic acid. Decomposition processes were analyzed based on chemical and physical characteristics, such as chemical reactions, the transportation of reactive species, and characteristics of target compounds. When treating solutions containing acetic acid, the optimization of bulk reactions involving ozone, which regenerates OH radicals from hydrogen peroxide, is a key factor for achieving high decomposition rates and energy efficiency. In contrast, the treatment of surfactants involves interfacial reactions at the plasma–liquid interface, where the accumulation of surfactants is a major concern.

中文翻译：

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用于分解持久性有机化合物的等离子体水处理技术综述

建立经济、环保的水处理技术是实现可持续社会的关键问题。基于等离子体的处理是分解持久性有机化合物的有前途的方法。这份进展报告通过关注两种类型的污染溶液总结了基于等离子体的水处理技术的最新改进：含有高浓度乙酸的溶液和含有表面活性剂（如全氟辛烷磺酸）的溶液。根据化学和物理特性分析分解过程，例如化学反应、活性物质的传输和目标化合物的特性。在处理含有乙酸的溶液时，优化涉及臭氧的本体反应，从过氧化氢中再生 OH 自由基是实现高分解率和能源效率的关键因素。相比之下，表面活性剂的处理涉及等离子体-液体界面的界面反应，其中表面活性剂的积累是一个主要问题。