了解使用PHREEQC表面复合模型的化物从地下水中被改性所吸附的化物
Francis Adu-Boahene1, Patrick Boakye2,3, Frank Ofori Agyemang4
1Department of Civil Engineering (Regional Water and Environmental Sanitation Centre, Kumasi), Kwame Nkrumah University of Science and Technology, PMB, Kumasi, Ghana.
Scientific reports
|July 29, 2023
概括
这项研究将废物转化为纳米颗粒,有效地从水中去除化物. 开发的吸附剂显示出高效率,为预防化提供了具有成本效益的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 化物对牙和骨健康至关重要,但在高度下是有毒的,导致化症.
- 有效和负担得起的化物去除方法对公共卫生至关重要.
- 将废弃物转化为功能吸附剂是一种可持续的方法.
研究的目的:
- 从片中开发具有成本效益的纳米颗粒,用于化物去除.
- 研究吸附机制并优化化物去除条件.
- 用真实的地下水样本和地化学建模来验证吸附剂的性能.
主要方法:
- 纳米颗粒是从片中合成的,并用改造的.
- 使用FTIR,零电荷点和XRD进行表征.
- 使用模拟和真实地下水,优化吸附参数 (pH,度,接触时间,剂量).
- 用PHREEQC进行地化学建模和参数估计以阐明机制.
- 同热度和动力学研究 (Langmuir, Freundlich,伪二阶).
主要成果:
- 经过修改的化物纳米颗粒显示出高化物去除效率.
- 吸附遵循兰格穆尔和弗朗德利希模型,表明在单层表面上的化学吸附.
- 伪二阶动力学最好地描述了吸附过程.
- 离子交换或表面吸引被确定为主要的吸附机制.
- PHREEQC模型准确模拟了化物吸附.
结论:
- 价值化废料为有效的化物清除吸附剂提供了可持续的来源.
- 开发的基材料是处理化物污染水的有希望的解决方案.
- 这种方法通过减轻化风险,有助于废物利用和改善公共卫生.
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