Sonochemical degradation of poly- and perfluoroalkyl substances - A review
Huimin Cao1, Weilan Zhang2, Cuiping Wang3
1College of Environmental Science and Engineering, Nankai University, Tianjin 300350, PR China; Department of Environmental and Sustainable Engineering, University at Albany, SUNY, Albany, NY 12222, USA.
Abstract:
Poly- and perfluoroalkyl substances (PFAS) have received considerable attention from environmental scientists and engineers because of their stability and widespread. Sonochemical process has been widely used in the environmental field to remove pollutants due to its advantages in terms of operational simplicity, no secondary pollutant formation and safety. Currently, many studies have reported sonochemical degradation of various PFAS in laboratory settings and showed excellent removal potential. This article reviewed the effects of different power densities, ultrasonic frequencies, temperatures, atmosphere conditions, additives, and initial concentration and chemical properties of PFAS on the sonochemical degradation of PFAS. Sonochemical methods combined with conventional techniques for PFAS removal were elaborated as well. Additionally, this article discussed the challenges and prospects of using sonochemical approaches for PFAS remediation.
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