Removing Perfluorinated Compounds from Water

  • Author:
  • Published: 01 June 2017
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Journal of the American Chemical Society/ACS Publications
  • Associated Societies: American Chemical Society (ACS), USA
thumbnail image: Removing Perfluorinated Compounds from Water

Perfluorinated compounds are used, e.g., in the production of Teflon and fire suppressants. They can accumulate in the environment and have negative effects on human health. Perfluorooctanoic acid (PFOA, pictured), in particular, can contaminate the groundwater near industrial sites. While activated carbon can remove this compound, it is easily fouled and rendered inactive by other compounds such as humic acids, which are produced by the biodegradation of organic matter and are ubiquitous in water.

Damian E. Helbling, Cornell University, Ithaca, NY, USA, William R. Dichtel, Cornell University and Northwestern University, Evanston, IL, USA, and colleagues have developed a β-cyclodextrin-based polymer network which can remove PFOA and is not affected by humic acids. The team crosslinked a β-cyclodextrin polymer with decafluorobiphenyl linkers using a nucleophilic aromatic substitution reaction.

The resulting polymer removed PFAO from contaminated water as fast as activated carbon and reduced the concentration below advised levels. The material's affinity towards PFOA was over ten times higher than that of activated carbon, and it can be regenerated and reused by washing it with methanol. Humic acids did not affect the adsorption. According to the researchers, the good PFAO removal performance can be attributed to the polymer's cyclodextrin binding sites.


Article Views: 1202

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

CONNECT: on Facebook on Twitter on YouTube on LinkedIn Sign up for our free newsletter

A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH