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使用浮动聚合物,在空气泡的帮助下迅速从水中去除PFAS

Meghanne E Tighe¹, Jacob D Guthrie², Hunter O Ford²

¹ASEE Postdoctoral Associate in the Chemistry Division, U.S. Naval Research Laboratory, Washington, DC, 20375, USA.

|March 26, 2025

概括

空气泡显著增强了使用浮式微孔聚合物去除和多基物质 (PFAS) 的效果. 这种方法在短短10分钟内快速捕获超过96%的许多PFAS.

科学领域:

环境化学环境化学
材料科学材料科学材料科学

背景情况:

和多基基物质 (PFAS) 是持久的环境污染物.
由于其化学性质,PFAS会在空气/水界面积聚.
迫切需要有效的PFAS从水中去除策略.

研究的目的:

研究使用含有微孔聚合物的气泡用于快速清除PFAS的方法.
通过空气泡的帮助来评估polyHIPEs (通过高内部相乳液模板合成的聚合物) 的效率.
评估泡对PFAS捕获率和能力的影响.

主要方法:

使用高内部相乳液模板合成多HIPE.
气泡的应用以促进PFAS运输到表面.
PFAS在漂浮的多高高的吸附.
量化PFAS去除速度和吸附能力的量化.

主要成果:

空气泡显著增加了PFAS的去除率,在10分钟内以1L/分钟的空气流量捕获12个PFAS中的10个,达到96%以上.
没有空气流,PolyHIPEs在10分钟内只捕获了总PFAS的12%.
泡辅助去除显著改善了短链PFAS的捕获 (10分钟内72%vs<1%没有泡).
证明了高吸附能力,PFOS达到1438 mg/g,在干扰物存在时表现出色.

结论:

气泡辅助与漂浮的多HIPEs相结合,提供了一种高效的方法,可以快速从水中去除PFAS.
这种技术有效地去除了广泛的PFAS,包括具有挑战性的短链变体.
该方法由于其速度,容量和稳定性,对实际的水处理应用具有前景.

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