全氟和多氟烷基化合物去除进展
Advances in removal of per-and polyfluoroalkyl substances
刘煦 1杨田 1雷秋霞 1钱霖 1赵红颖1
作者信息
- 1. 上海市化学品分析、风险评估与控制重点实验室,同济大学化学科学与工程学院,上海,200092
- 折叠
摘要
全氟和多氟烷基化合物(per-and polyfluoroalkyl substances,PFAS)是指碳链上的氢原子被部分或者全部取代为氟原子的一类人工合成的有机化合物,因具有优异的疏水性、疏油性、抗污性及化学稳定性,被广泛运用于化工、服装家具、食品包装和日常用品等行业中.PFAS作为一种持久性有机物,会使人体免疫系统受损、甲状腺激素分泌紊乱甚至是引发癌症,而且PFAS性质稳定可长距离迁移,具有难降解性和生物蓄积性,是目前最受关注的新污染物之一,因此探索高效、节能的PFAS的去除方法具有重要的现实意义,也是环境科学领域的重要研究内容.在全氟和多氟类化合物的降解中,主要利用了强氧化性物种(SO4·-、·OH和h+)或强还原性物种(eaq-)对PFAS进行进攻从而进一步实现裂解矿化.本文综述了高级氧化法、高级还原法和微生物降解法这三种方法的技术特点,去除效果,反应途径和去除机理,并分析各方法的优点和不足之处,对全氟和多氟烷基化合物的去除新方法和发展前景提出展望.
Abstract
Per-and Polyfluoroalkyl substances(PFAS)are a class of synthetic organic chemicals in which one or more hydrogen atoms on the carbon chains are replaced by fluorine atoms.Owing to their exceptional hydrophobic,oil-phobic,stain resistant properties as well as their high stability,PF AS are extensively employed in a range of industries,including chemical,textile,furniture,food packaging and consumer goods.Furthermore,PFAS as persistent organic compounds have the potential to cause immune system damage,disruption of thyroid hormone secretion,and carcinogenic effects.Additionally,the stability of PFAS allows them to migrate over long distances,resulting in high levels of bioaccumulation and persistence in environment.PFAS have emerged as a significant concern among emerging contaminants,and there is an urgent need for efficient PFAS removal strategies.In the degradation of Per-and Polyfluoroalkyl substances,strong oxidizing species(SO4·-,*OH and h+)or strong reducing species(ea-)are mainly used to attack PFAS and realize cleavage of C—F and C—C and further mineralization.This review provides a detailed discussion of three types of PFAS treatment processes,including advanced oxidation/reduction process and microbial degradation.The technical features,removal performance,removal pathway and removal mechanism are throughly summarized.In addition,the advantages and disadvantages of each method are highlighted.Through this review,we aim to draw attention to the research and the development of efficient technologies for PFAS removal.
关键词
全氟和多氟烷基化合物/去除途径/高级氧化法/高级还原法/微生物降解Key words
per-and polyfluoroalkyl substances/removal pathways/advanced oxidation process/advanced reduction process/microbial degradation引用本文复制引用
基金项目
国家自然科学基金(22122606)
国家自然科学基金(22076142)
国家自然科学基金(22076140)
上海市科委(14DZ2261100)
中央高校基本科研业务费专项()
出版年
2024
NETL
NSTL
万方数据