土壤pH,温度和水分含量对甲福胺和红红的吸附动态的影响
Maliha Ashraf1, Neha Abbasi2, Pankaj Kumar Gupta3
1School of Interdisciplinary Research, Indian Institute of Technology Delhi, New Delhi, 110016, India.
Environmental research
|October 31, 2024
概括
药品和个人护理产品 (PPCP),如甲胺 (MTN) 和红色素 (ETM) 的污染是一个越来越令人担忧的问题. ETM比MTN更强烈地吸收,表明MTN对地下水质量构成更高的风险.
科学领域:
- 环境化学环境化学
- 土壤科学 土壤科学
- 水的质量 水的质量
背景情况:
- 药品和个人护理产品 (PPCP) 的污染对土壤和地下水构成风险.
- 了解PPCP的环境命运对于保护水资源至关重要.
研究的目的:
- 在不同类型的土壤中研究甲胺 (MTN) 和红色素 (ETM) 的吸附行为.
- 为了确定土壤特性 (有机物,颗粒大小) 和环境因素 (pH,土壤水分含量) 对PPCP吸附的影响.
- 评估MTN和ETM吸附的热力学和动力学方面.
主要方法:
- 研究了吸附动力学 (单一和竞争性),异热和热力学.
- 实验是在不同成分的沙土和沙土土壤上进行的.
- 在环境相关度下评估了pH值和土壤含水量 (SMC) 的影响.
主要成果:
- 吸附平衡在大约4小时内达成,采用伪二阶动力模型.
- 土壤中有机物含量较高,通过各种相互作用增强了MTN和ETM吸收.
- 弗朗德利希模型最好地描述了平衡数据,表明了有利的吸附.
- 吸附是一个可行的,物理和外热过程,受pH和SMC的影响.
结论:
- 红素 (ETM) 在研究的土壤中比甲胺 (MTN) 具有更强的吸附性.
- 甲胺 (MTN) 具有更高的迁移潜力,对地下水污染的风险更大.
- 结果提供了关于PPCP在土壤地下水系统中的运输和命运的关键见解.
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