Tailored Polyanilines Are High-Affinity Adsorbents for Per- and Polyfluoroalkyl Substances

Remediation of water contaminated by per- and polyfluoroalkyl substances (PFAS) relies heavily on separation techniques. This work tested the adsorption of seven PFAS (including short-chain congeners) on polyaniline-derived polymers under simulated environmentally relevant conditions including a ran...

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Bibliographic Details
Published in:ACS ES&T water 2022-08, Vol.2 (8), p.1402-1410
Main Authors: Olshansky, Yaniv, Gomeniuc, Anton, Chorover, Jon, Abrell, Leif, Field, Jim A., Hatton, James, He, Jianzhou, Sierra-Alvarez, Reyes
Format: Article
Language:English
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Summary:Remediation of water contaminated by per- and polyfluoroalkyl substances (PFAS) relies heavily on separation techniques. This work tested the adsorption of seven PFAS (including short-chain congeners) on polyaniline-derived polymers under simulated environmentally relevant conditions including a range of natural organic matter (NOM) and ion concentrations, mineral anionic and cationic species, and multi-component PFAS solutions. Results were benchmarked against commercial activated carbon and polymeric resin. The polymers poly-o-toluidine and polyaniline exhibited high PFAS removal efficiencies of over 98 and 75% of each PFAS in the compound mixture, respectively. The adsorption capacity of the polymers was comparable to that of activated carbon on a mass basis at low equilibrium concentrations (
ISSN:2690-0637
2690-0637
DOI:10.1021/acsestwater.2c00166