Evaluation of the adsorption behavior of mixed perfluoroalkyl and polyfluoroalkyl substances onto granular activated carbon and Styrene‐divinylbenzene resins

Abstract Because of the remarkable chemical structure perfluoroalkyl and polyfluoroalkyl substances (PFAS), as well complex conditions water, selecting an appropriate adsorbent for treating PFAS is critical. Adsorption needs to be environmentally friendly, low cost, consider types adsorbents that work in mixed solutions. In present study, we used estimate activity. This research aimed evaluate compare efficacy adsorption from water using different adsorbents: granular activated carbon (GAC), IRA 910 (strong anion resin), DOWEX MB‐50 (mixed exchange resin). Batch isotherms kinetic studies were performed perfluorooctanoic acid (PFOA), perfluorooctane sulfonic (PFOS), perfluorohexane (PFHxS). Freundlich models consistently described behavior with a high correlation coefficient ( R 2 > 0.98). capacities on GAC IRA910 dependent chain length (PFOS PFOA PFHxS). The capacity decreased because sulfonate effects PFHxS PFOA). rate constants k ) represented observed within 96 h accurately determined by pseudo‐second‐order (PSO) model. achieved followed relationship (PFOS) (PFOA) Furthermore, order (PFHxS), implying promoted hydrophobicity more significantly PFCAs than perfluoroalkane (‐alkyl) acids. kinetics revealed (PFHxS) gel‐type resins like are suitable shorter‐chain PFAS. Further investigation needed determine effect organic matter under natural adsorptive selection caused operational complexities.