了解 permanganate 和 ferrate 在复杂的水矩阵中用于水疗的实际应用
Dingxiang Wang1, Yongqiang Yu2, Jiahao He2
1School of Environment, Harbin Institute of Technology, Harbin 150090, China; Department of Civil and Environmental Engineering, The Hong Kong University of Science and Technology, Hong Kong, China.
Journal of hazardous materials
|October 11, 2023
概括
酸和酸盐有效地去除复杂水中的新兴污染物 (EP),更改溶解的有机物成分超过臭氧. 这些氧化剂向特定的有机成分,将其转化为碳酸.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
背景情况:
- 之前对新出现的污染物 (EP) 的 permanganate/ferrate 氧化方法的研究使用了超纯水中的高度.
- 现实世界中的水矩阵含有复杂的溶解有机物 (DOM),可以干扰氧化过程.
研究的目的:
- 评估在现实的度下复杂的水矩阵中对EPs去除的酸盐和铁酸盐的效率.
- 为了在类似的条件下比较 permanganate 和 ferrate 与臭氧的性能.
- 为了研究氧化剂对DOM成分的影响.
主要方法:
- 在合成和天然水中氧化选定的EPs,使用酸,酸盐和臭氧在mg L-1水平.
- 分析DOM成分的变化,包括芳香度,电子捐赠能力和分子量.
- 识别氧化剂准的DOM结构中的分子级变化.
主要成果:
- permanganate 和 ferrate 的效率比臭氧更受到酸和 DOM 的影响.
- DOM没有矿化,但经历了组成变化:芳香度降低,电子捐赠能力和平均分子量.
- 缩的芳香,类和类成分是主要目标;和芳香物被氧化成碳酸盐.
结论:
- 在现实的水条件下, permanganate 和 ferrate 显示了 EPs 处理的潜力.
- 酸盐和酸盐的氧化显著改变了DOM结构,主要是通过碳酸酸的形成.
- 了解DOM变化对于评估这些氧化处理的整体有效性至关重要.
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