强基凝类树脂中疏水性交联剂对 perfluoroalkyl 物质的吸附动力学和吸附能力的影响
Florian Junge1, Fiona E Rückbeil2,3,4, Regina Gnirss2
1Institut für Chemie und Biochemie, Freie Universität Berlin, Arnimallee 22, 14195 Berlin, Germany.
概括
新型阴离子吸附剂有效地从水中去除持久的和多基物质 (PFAS). 这些新材料表现出更快的动力学和与现有的PFAS修复方法可比的性能.
科学领域:
- 环境化学环境化学
- 聚合物科学 聚合物科学
- 水处理技术水处理技术
背景情况:
- 和多醇基物质 (PFAS) 是持久性环境污染物,由于健康问题而受到越来越多的监管审查.
- 传统的去除方法,如活性炭吸附,由于表面相互作用较弱,对于PFAS通常是无效的.
- 离子交换树脂在PFAS去除方面表现有前途,提供了更好的动力学和有针对性的吸附.
研究的目的:
- 合成和评估新型阴离子吸附剂,以加强对和多基物质 (PFAS) 的去除.
- 为了比较这些新型吸附剂与最先进的离子交换树脂和颗粒活性炭的性能.
- 为了研究不同交叉链体化学物质 (亚利法性,性,性) 对PFAS吸附的影响.
主要方法:
- 通过聚乙烯胺与各种乙烯 (亚利法性,性,基于) 的交联合成新型阴阳树脂,然后进行甲基化.
- 异热和动力学研究,以评估吸附能力和去除速度.
- 与商业强基离子交换树脂和颗粒活性炭进行比较分析.
主要成果:
- 与对照组相比,新开发的阴离子吸附剂对长链和短链PFAS的去除速度明显更快.
- 酸吸附剂的平衡负载与五种或更多种 perfluorinated 碳的 PFAS 的最先进树脂相当.
- 交叉链体化学影响了新型阴离子吸附剂的吸附性能和效率.
结论:
- 新型阴离子吸附剂,特别是那些含有的成分的吸附剂,为PFAS水处理提供了有希望和高效的替代品.
- 量身定制的合成方法允许开发具有更好的动力学和高吸附能力的吸附剂,以挑战PFAS化合物.
- 这些发现有助于开发先进的材料,以应对PFAS污染的全球挑战.
更多相关视频
15:33Microwave-assisted Functionalization of Polyethylene glycol and On-resin Peptides for Use in Chain Polymerizations and Hydrogel Formation
Published on: October 29, 2013
29.2K
09:04Identifying Per- and Polyfluorinated Chemical Species with a Combined Targeted and Non-Targeted-Screening High-Resolution Mass Spectrometry Workflow
Published on: April 18, 2019
12.6K
相关概念视频
Silica Gel Column Chromatography: Overview
1.7K
Silica gel column chromatography is a technique for separating compounds using a column packed with silica gel as the stationary phase. This method relies on differences in the polarity of compounds. Based on their polarities, compounds move between the stationary phase (silica gel) and the mobile phase (the solvent), forming discrete bands in the column.
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
Polar components tend to bind strongly to the silica gel, causing them to move slowly through the column. In contrast, nonpolar compounds...
1.7K
Ion Exchange
658
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
658
