Degradation of Per- and Polyfluoroalkyl Substances (PFASs): Structural Dependence and Implications to PFASs Remediation and Managemen
Author(s)
Liu, Jinyong
Men, Yujie
Bentel, Michael
Yu, Yaochun
Xu, Lihua
Wong, Bryan
Issue Date
2019-05-21
Keyword(s)
PFAS
per- and polyfluoroalkyl substances
Abstract
The removal of per- and polyfluoroalkyl substances (PFASs) from drinking water has been the USEPA’s national priority. Although many novel technologies have been developed for the defluorination (i.e., C−F bond cleavage) of legacy C8 PFOA/PFOS, studies on the destruction of other PFASs have been very limited. In fact, PFAS pollutants with variable structures, lengths, and functional groups has been detected in wastes from fluorochemical industries, fire-fighting, and landfills. It is imperative to obtain a thorough understanding of the structure-reactivity relationship for (1) developing technologies to treat all PFASs in the environment and (2) designing new fluorochemical formulations to prevent future release of recalcitrant PFASs. This talk will present critical structure-reactivity relationships within >60 representative PFASs undergoing defluorination treatment. Cross comparison of experimental results and theoretical calculations for various PFAS structures suggest strong correlations and novel mechanistic insights regarding the rate and extent of PFAS degradation and multiple structural features of PFASs. The results are expected to significantly advance technologies and strategies for PFASs remediation and management.
Series/Report Name or Number
2019 Emerging Contaminants in the Environment Conference (ECEC19)
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