高效地从水中去除PFAS,使用表面修改的可再生四分化酸盐水凝
Mohammad Bagheri Kashani1, Lingfei Fan2, Weile Yan2
1Department of Plastics Engineering, University of Massachusetts, Lowell, MA 01854, USA.
Gels (Basel, Switzerland)
|January 27, 2026
概括
表面修改的四级化酸盐水凝 (MQCGs) 有效地从水中去除长链和短链PFAS. 这些工程水凝具有高吸附能力和可回收性,用于PFAS整治.
科学领域:
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 和多基基物质 (PFAS) 是持久的环境污染物.
- 现有的PFAS整治技术往往是昂贵或低效的.
- 生物基材料为水处理提供了一个可持续的替代方案.
研究的目的:
- 开发表面修饰的生物基水凝,以有效地去除PFAS.
- 为了设计水凝表面积和充电密度,以提高吸附性.
- 评估这些新型水凝的性能和可再生性.
主要方法:
- 基托桑水凝被交叉连接并四分化.
- 使用聚乙烯糖醇 (PEG) 的牺牲模板创建了微尺度的表面通道.
- 使用各种PFAS化合物进行了批量吸附实验.
- 分析了吸附动力学和同热量.
主要成果:
- 表面修饰的四级化酸盐水凝 (MQCGs) 在<30分钟内实现了>98%的PFOS吸附.
- 在广泛的pH范围 (3-12) 中,MQCG有效地去除了长链和短链PFAS.
- 对于PFOS,PFOA,PFBS和PFHxA,即使在低度和电解质存在的情况下,也观察到高去除效率 (>99.9%).
结论:
- 设计的MQCG显示出对PFAS的优越吸附能力和选择性.
- 液凝在10个再生周期中保持了性能,表明了出色的可重复使用性.
- MQCGs代表了一个有前途的新型可持续材料类别,用于有效地从污染水中封存PFAS.
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