Critical Review of Thermal Decomposition of Per- andPolyfluoroalkyl Substances: Mechanisms and Implications forThermal Treatment Processes

Wang Junli; Lin Zunhui; He XuexiangSong MingruiWesterhoff PaulDoudrick KyleHanigan David

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Critical Review of Thermal Decomposition of Per- andPolyfluoroalkyl Substances: Mechanisms and Implications forThermal Treatment Processes

机译：Critical Review of Thermal Decomposition of Per- andPolyfluoroalkyl Substances: Mechanisms and Implications forThermal Treatment Processes

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摘要

Per- and polyfluoroalkyl substances (PFASs) arefluorinated organic chemicals that are concerning due to theirenvironmental persistence and adverse human and ecological effects.Remediation of environmental PFAS contamination and their presencein consumer products have led to the production of solid and liquidwaste streams containing high concentrations of PFASs, which requireefficient and cost-effective treatment solutions. PFASs are challenging todefluorinate by conventional and advanced destructive treatmentprocesses, and physical separation processes produce waste streams(e.g., membrane concentrate, spent activated carbon) requiring furtherpost-treatment. Incineration and other thermal treatment processes arewidely available, but their use in managing PFAS-containing wastesremains poorly understood. Under specific operating conditions, thermal treatment is expected to mineralize PFASs, but thedegradation mechanisms and pathways are unknown. In this review, we critically evaluate the thermal decomposition mechanisms,pathways, and byproducts of PFASs that are crucial to the design and operation of thermal treatment processes. We highlight theanalytical capabilities and challenges and identify research gaps which limit the current understanding of safely applying thermaltreatment to destroy PFASs as a viable end-of-life treatment process.

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《Environmental Science & Technology: ES&T》 |2022年第9期|5355-5370|共16页
作者
Wang Junli; Lin Zunhui; He XuexiangSong MingruiWesterhoff PaulDoudrick KyleHanigan David;
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作者单位

Univ Nevada;

Univ Notre Dame;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
Thermal treatment; pyrolysis; combustion; incineration; PFAS; POLYFLUORINATED ALKYL SUBSTANCES; GAS-PHASE PYROLYSIS; POLYFLUOROALKYL SUBSTANCES; PERFLUOROALKYL SUBSTANCES; WASTE-WATER; PHYSICOCHEMICAL PROPERTIES; PERFLUOROOCTANOIC ACID; FLUORINATED COMPOUNDS; CARBOXYLIC-ACIDS; POTENTIAL SOURCE;

Critical Review of Thermal Decomposition of Per- andPolyfluoroalkyl Substances: Mechanisms and Implications forThermal Treatment Processes

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