Title: Advances in Remediation of PFAS-impacted Waters
Abstract: This chapter focuses on treatment of PFAS-impacted water to facilitate remediation and provides a summary of technologies which are either in present-day use or in development. The physical and chemical properties of PFAS lend themselves to treatment by certain technologies which exploit how they behave. Treatment technologies generally comprise multiple stages which achieve separation and then destruction, with biological treatment not possible.The separation stage removes PFAS from water, creating a less concentrated, clean aqueous stream and a secondary stream consisting of a high-concentration, low-volume liquid stream or a PFAS-impacted solid phase. Longer-chain, amphiphilic PFAS are relatively hydrophobic; they can be treated using activated carbon and can be extracted from water by foam fractionation. While shorter-chain PFAS are generally not surfactants, they cannot be effectively extracted as a foam and tend to be more easily treated by use of ion exchange resins as opposed to activated carbon. Several new functionalized adsorbent media are being tested, but full-scale applications are generally lacking. Separation of PFAS via membrane filtration methods are possible but incur significant cost and create a liquid waste which needs further treatment.
Publication Year: 2021
Publication Date: 2021-06-09
Language: en
Type: book-chapter
Indexed In: ['crossref']
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot