结构和分子水平的转化,以氧化废水有机物由氧化物氧化
Hongnan Liu1, Yingying Li1, Zizheng Huangfu2
1Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China; Engineering Research Center for Water Pollution Source Control & Eco-remediation, College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China.
Water research
|July 17, 2024
概括
污水中的有机物质 (EfOMs) 与氧化 (MnOx),特别是无形的MnO2反应. 这种相互作用会氧化EfOM,改变其结构并增加生物降解性,从而影响水安全.
科学领域:
- 环境化学环境化学
- 水处理技术水处理技术
- 地质化学 地质化学
背景情况:
- 废水有机物 (EfOM) 在水生系统中普遍存在,并且可以与氧化 (MnO) 相互作用.
- MnOx和EfOM之间的氧化还原相互作用对水质和环境安全至关重要.
- 了解这些反应对于管理废水处理厂排放量至关重要.
研究的目的:
- 评估不同氧化 (MnOx) 与废水有机物 (EfOMs) 的反应性.
- 为了确定EfOM中最容易受到MnOx氧化的特定成分.
- 描述氧化后EfOMs的结构和性质变化.
主要方法:
- 使用EfOMs对MnOx反应性的实验性评估.
- 使用超高质谱法 (FT-ICR MS) 进行分子水平转换分析.
- 评估化指数,明显分子量和生物降解性 (BOD/COD) 的变化.
主要成果:
- 无形MnO2由于其高表面积和活性含量,对EfOMs具有更强的氧化能力.
- 以芳香和不和结构为特征的类化合物是EfOM中最具反应性的成分.
- 氧化EfOMs表现出较低的化指数,较小的分子量和显著更高的生物降解性.
结论:
- 在MnOx和EfOM之间发生的氧化还原反应,特别是无形MnO2,有效地转化EfOM.
- 氧化过程主要针对EfOMs中的类结构.
- 这些转变可以改变接收水体的EfOMs的非生物和生物行为,从而影响水安全.
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