生物降解重塑了来自草本植物和木质植物的垃圾衍生溶解有机物中的反应性
Qi Ren1, Qiang Zhang2, Fang Chen1
1College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China.
Water research
|December 28, 2025
概括
植物垃圾类型显著影响了水中的消毒副产品 (DBP) 形成. 生物降解改变了DOM的组成,减少了一些DBPs,但增加了酸二 (HANs),特别是来自木质垃圾,造成更高的风险.
科学领域:
- 环境化学环境化学
- 水的质量 水的质量
- 有机地化学 有机地化学
背景情况:
- 从垃圾中提取的溶解有机物 (DOM) 是植被流域中消毒副产品 (DBPs) 的关键前体.
- 对于草本植物 (HCP-DOM) 和木质植物 (WDP-DOM) 之间的成分差异和DBP形成潜力 (DBP-FP) 的理解有限,特别是生物降解后.
研究的目的:
- 调查生物降解前后的HCP-DOM和WDP-DOM的组成变化和DBP-FP.
- 为了确定影响DBP形成的关键驱动因素,从不同的垃圾衍生的DOM来源.
主要方法:
- 从十种植物垃圾类型中提取DOM,分为HCP-DOM和WDP-DOM.
- 对提取的DOM进行了受控生物降解实验.
- 使用紫外线和光光谱仪进行表征,使用里埃变态离子循环子共振质谱法 (FTICR-MS).
- DBP形成潜力 (DBP-FP) 测试和统计建模 (相关性分析,随机森林).
主要成果:
- HCP-DOM显示了更高的蛋白质和氨基糖类化合物;WDP-DOM具有更多的素和缩的芳香类成分.
- 在两种DOM类型中,生物降解减少了类似蛋白质的化合物,增加了类似的成分.
- 生物降解降低了三甲,酸和化水合物形成 (57-82%),但增加了酸 (HAN) 产量 (高达147%).
- 生物降解的WDP-DOM比生物降解的HCP-DOM产生了50%以上的HAN,这表明的DBP风险更高.
结论:
- 植被类型和微生物加工显著影响了来自的DOM的反应性.
- 与相关的转化和蛋白质,氨基糖和类成分的变化是DBP形成的关键驱动因素.
- 来自木质植物来源的HAN前体的管理对于确保饮用水安全至关重要.
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