生物固体和污水废水应用对西塔格利平的土壤吸附的影响
Alexander Ccanccapa-Cartagena1, Wei Zheng1, Sophie Circenis1
1Illinois Sustainable Technology Center, University of Illinois at Urbana-Champaign, 1 Hazelwood Drive, Champaign, IL 61820, United States.
The Science of the total environment
|June 25, 2023
概括
对农田的生物固体和污水应用减少了药物西塔利普丁的土壤吸收. 这种做法增加了环境暴露的风险,原因是土壤中药物结合的减少. 静电相互作用是主要的吸附机制.
科学领域:
- 环境化学环境化学
- 土壤科学 土壤科学
- 农业科学 农业科学
背景情况:
- 生物固体和污水污水在农业中越来越多地被用作营养和有机物质来源.
- 这些有机修正案可能含有药品和个人护理产品 (PPCP),造成潜在的环境风险.
- 了解农业土壤中PPCP的命运对于可持续的废物管理至关重要.
研究的目的:
- 为了研究四种农业土壤中西塔利普丁的吸附行为.
- 为了评估生物固体和污水废水应用对西塔利普丁吸收的影响.
- 阐明土壤中西塔利普丁的主要吸附机制.
主要方法:
- 使用四种不同的农业土壤进行吸附实验.
- 不同度的生物固体和污水废水的应用.
- 使用弗洛伊德利希等温模型和减弱总反射 (ATR) - 红外 (IR) 光谱学的分析.
- 在与甲胺一起的共同溶液系统中对竞争性吸附的研究.
主要成果:
- 西塔格利平的吸附能力与土壤有机物含量正相关,与土壤pH负相关.
- 生物固体和污水废水的应用显著降低了西塔格利平的吸附能力和亲和力 (Kf).
- 在ATR-IR光谱检测中,西塔利普丁与土壤表面之间的静电相互作用是主要的吸附机制.
- 与甲福明的竞争性吸附降低了在共同污染物系统中的西塔格利普丁的吸附亲和力.
结论:
- 生物固体和污水污水的农业应用可以提高西塔利普丁在土壤中的流动性.
- 这种减少的吸附增加了环境污染和生态风险的可能性.
- 了解吸附机制和竞争性相互作用对于评估PPCP的环境命运至关重要.
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