从水中快速吸收短链和长链的多基和多基物质,通过化学改性粉从水中吸收
Behnia Bitaraf1, Md Nahid Pervez1, Tao Jiang1
1Department of Environmental and Sustainable Engineering, University at Albany, State University of New York, Albany, New York 12222, United States.
概括
一种基于粉的新型吸附剂有效地从水中去除了90%以上的和多基物质 (PFAS). 这种具有成本效益的材料,粉/MnO2/PmPD,在各种环境条件下表现出稳定性,并可重复使用.
科学领域:
- 环境化学环境化学
- 材料科学 材料科学 材料科学
- 水处理 处理水的方法
背景情况:
- 和多基基物质 (PFAS) 是持久的环境污染物.
- 从水中去除PFAS的有效和可持续方法至关重要.
研究的目的:
- 合成和评估一种基于粉的新型吸附剂,用于PFAS的去除.
- 为了研究吸附剂在各种水矩阵和环境条件下的性能.
主要方法:
- 通过KMnO4氧化和m-phenylenediamine (mPD) 涂层合成了一种基于粉的吸附剂.
- 测试了吸附剂在去除脱离离子和河水中的目标PFAS和GenX的效率.
- 评估环境因素 (pH,自然有机物,离子) 对PFAS去除的影响.
- 评估了吸附剂的可再生性和可重复使用性.
主要成果:
- 粉/MnO2/PmPD吸附剂从脱离离子水中去除了90%以上的9个目标PFAS和80%以上的GenX.
- 在河水样本中,长链PFAS的去除效率仍然很高.
- 吸附剂的性能基本上不受pH值变化 (4.0-11.0),天然有机物 (0-100毫克L-1) 和常见离子 (二碳酸盐,酸盐,化物在1毫米) 的影响.
- 吸附剂证明可再生性和可重复使用性至少五个周期.
结论:
- 开发的粉/MnO2/PmPD材料是一种有希望的,低成本的吸附剂,用于从地表水中去除PFAS.
- 需要进行进一步的修改,以加强清除短链PFAS.
- 该研究提供了关于PFAS捕获机制和吸附剂在环境条件下的稳定性的见解.
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