土壤合物对子烯在污染场所的吸附和迁移的影响在流水透过程中
Jianlong Wang1, Zhimeng Han1, Changhe Zhang2
1Key Laboratory of Urban Stormwater System and Water Environment, Ministry of Education, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China; Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing, 100044, China.
Environmental pollution (Barking, Essex : 1987)
|May 12, 2024
概括
土壤合物增强了甲 (BaP) 在受污染的环境中的流动性. 增加的合物,降低的pH值和更高的初始BaP度显著影响BaP的运输,这对污染控制策略至关重要.
科学领域:
- 环境科学 环境科学
- 土壤科学 土壤科学
- 地质化学 地质化学
背景情况:
- 土壤合物无处不在,并表现出相当大的吸附能力,促进污染物运输.
- 由于环境运输,甲 (BaP) 等污染物对人类和生态健康构成风险.
- 了解BaP和土壤合物共同迁移对于评估和减轻污染至关重要.
研究的目的:
- 为了研究甲 (BaP) 对土壤合物的吸附特性.
- 在不同的条件下检查BaP和土壤合物共同迁移的行为.
- 为控制土壤和地下水系统中BaP污染提供见解.
主要方法:
- 静态批量吸附实验以确定BaP吸附动力学和异热量.
- 动态批量实验以评估由土壤合物度,pH值和初始BaP水平影响的BaP流动性.
- 吸附机制的分析,包括π-π相互作用和键.
主要成果:
- 对土壤合物的BaP吸附遵循伪二次动力学 (R2 = 0.966) 和兰格穆尔等温法 (R2 = 0.995).
- 增加的土壤合物度 (500毫克L-1) 显著提高了BaP的流动性 (23.2%),相比于它的缺失 (13.4%).
- 较低的影响pH (4.0) 增加了BaP的流动性 (30.1%),而较高的初始BaP度 (5.27 mg kg-1) 降低了它 (39.1%).
结论:
- 土壤合物在污染的土壤中对二烯的运输起着至关重要的作用.
- 环境因素,如合物度和pH值是BaP流动性的关键决定因素.
- 这些发现支持制定管理土壤和地下水中BaP污染的策略.
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