阐明了碳酸盐基在由UV/氧硫酸盐系统降解兰醇中的增强作用
Die Zhou1, Huaying Liu2, Jin Wang1
1Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan, 650500, China.
Chemosphere
|April 13, 2024
概括
碳酸盐基 (CO3•−) 在先进的氧化过程中显著帮助有机微污染物的降解. 它的贡献因水的化学成分而异,在实际污水处理中高达93%.
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 (AOPs)
背景情况:
- 碳酸盐基 (CO3•−) 是AOPs中的一个关键的二次基.
- 它在有机微污染物降解中的作用需要系统的探索.
研究的目的:
- 量化CO3•−对紫外线/氧硫酸盐 (PMS) 中的普拉诺洛尔降解动力学的影响.
- 研究水矩阵组件对CO3−贡献的影响.
主要方法:
- 开发了一个稳定状态激进模型来量化激进贡献.
- 研究了在UV/PMS系统中与不同碳酸盐度,pH值和溶解有机物质不同的propranolol降解.
主要成果:
- 模型预测与实验数据密切匹配.
- 醇降解的CO3•−贡献依赖于水矩阵,在10mM HCO3−时达到58%.
- 高pH值和低中醇度有利于CO3•−的贡献.
- 溶解的有机物显著地清除了激素,减缓了降解.
- 在实际的污水处理中,CO3•−的贡献达到93%.
结论:
- CO3•−在通过AOPs去除有机微污染物方面发挥着关键作用.
- 开发的模型准确预测了复杂矩阵中的降解动力学.
- 了解CO3•−的行为对于优化废水处理的AOP至关重要.
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