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构建以结构调整为基础的并列芬顿式反应系统,以提高水污染物矿化效率

Min Chen¹, Tian Yang¹, Qiuxia Lei¹

¹Shanghai Key Lab of Chemical Assessment and Sustainability, Key Laboratory of Yangtze River Water Environment, School of Chemical Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.

Angewandte Chemie (International ed. in English)

|September 30, 2024

概括

这项研究引入了一种使用多个反应性氧物种 (ROS) 的双重反应系统 (TRS),以有效地矿化水中的新出现的污染物. 与单个ROS方法相比,这种新方法显著提高了污染物的降解.

科学领域:

环境化学环境化学
水处理技术水处理技术
先进的氧化过程先进的氧化过程

背景情况:

新出现的污染物对水安全构成风险,需要有效的去除方法.
先进的氧化工艺 (AOP) 提供了一个解决方案,但往往需要高能量/化学投入.
现有的AOP在各种污染物的完全矿化方面扎.

研究的目的:

开发一个协同反应系统 (TRS) 来增强新出现的污染物的矿化.
研究不同反应性氧物种 (ROS) 在污染物降解中的协同效应.
建立一个可持续和高效的水处理战略.

主要方法:

通过使用Fe中心阴极的电化学方法激活过氧硫酸盐,构建了一个TRS模型.
实现了单片氧 (¹O₂),基 (HO⋅) 和硫酸基 (SO₄⋅^-) 的选择性生成.
评估了单个ROS AOPs的矿化效率与硫甲醇 (SMX) 的¹O₂+SO₄⋅^--TRS.

主要成果:

该O2+SO4TRS实现了近100%的SMX矿化,显著优于单个ROS系统.
机制研究显示了连续的降解:O攻击了硫胺桥,随后是SO攻击.
该TRS方法已成功扩展到其他硫胺抗生素,和碳化合物,并应用于真正的制药废水.

结论:

拟议的双重反应系统 (TRS) 是一种强大而可持续的策略,用于增强污染物矿化.
在TRS中基于结构的ROS选择优化了特定污染物的降解途径.
这种方法为处理复杂的制药废水和确保水安全提供了有希望的解决方案.

关键词:

电化学电化学电化学新出现的污染物新出现的污染物像芬顿这样的东西.矿物化的矿物化.协奏组反应是一种协奏组反应.

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