在污水污泥中识别和氧化含有酸盐,酸硫酸盐和乙烯氨基酸的化
Enrui Li1, Yibin Sun2, Yi Wan2
1Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Sciences & Engineering, Beijing Forestry University, Beijing 100083, China.
这项研究在污泥中发现了新的含和含硫的化抛结构类似物 (CPSA),其中一些来自工业产品,另一些来自生物转化. 污泥氧化通过分解和基化,部分去除了这些CPSA.
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 环境科学 环境科学
背景情况:
- 类抛 (CPs) 被广泛使用,导致环境污染.
- 疏水性CPS及其结构模拟物 (CPSA) 在废水处理过程中积聚在污泥中.
- 污泥中的CPSAs的身份,来源和命运,特别是氧化过程中,人们对其了解甚少.
研究的目的:
- 在污泥中识别和描述含和硫的CPSA.
- 调查这些CPSA的来源.
- 为了确定这些CPSA在污泥氧化处理过程中的命运.
主要方法:
- 使用Ph4PCl增强电离加上超高性能液体染色学 (UPLC) -轨道质谱法 (MS) 分析污泥.
- 基于特征碎片 (NO3,SO4H,SH) 和MS/MS分析的CPSAs的鉴定.
- 在污泥和商业CP混合物中比较CPSA配置文件.
主要成果:
- 检测到320个含或含硫的CP (205个CP-N,115个CP-S),其强度是CP的3.9-4.1倍.
- 确定了273种以前未知的CPSA,包括184种CP-NO3,63种CP-SO4H和26种CP-SH.
- 污泥和商业污泥中大量存在CP-NO3和CP-SO4H,这表明它们来自工业领域. CPs-SH是污泥特定的,表明生物转化.
- 污泥氧化通过碳链分解和基化去除了新发现的CPSA的20.4-60.7%.
结论:
- 新型含和硫的CPSA是污泥的重要组成部分.
- CPs-NO3和CPs-SO4H可能来自工业CPs,而CPs-SH则是生物转化产生的.
- 污泥氧化部分降解这些CPSA,不同的类型有不同的机制.
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