Enhanced removal of PFAS in water using activated ZIF-8 carbons: High adsorption efficiency, repeatable regenerability and reusability

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F25%3A43932266" target="_blank" >RIV/60461373:22340/25:43932266 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.cej.2025.160192" target="_blank" >https://doi.org/10.1016/j.cej.2025.160192</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cej.2025.160192" target="_blank" >10.1016/j.cej.2025.160192</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced removal of PFAS in water using activated ZIF-8 carbons: High adsorption efficiency, repeatable regenerability and reusability

Popis výsledku v původním jazyce

Identifying an effective adsorbent to remove the complex mixtures of per- and polyfluoroalkyl substances (PFAS) from water is crucial to address this challenge. Herein, we introduce the hierarchical porous activated carbons derived from ZIF-8, namely ZIF-8 carbon (ZFC) and activated ZFC (AZFC) as potential candidates for removing mixtures of 11 PFAS such as C-6-C-10 perfluoro carboxylic acids (PFCAs); C-4, C-6, C-8 perfluoro sulfonic acids (PFSAs); 6:2 fluorotelomer sulfonic acid (6:2 FTS); 2-N-ethyl perfluorooctane sulfonamido acetic acid (NEtFOSAA); and undecafluoro-2-methyl-3-oxahexanoic acid (GenX), in ultrapure water at 10 mu g/L each. Out of three porous sorbents evaluated, AZFC demonstrated exceptional performance, achieving &gt; 99 % removal for C6C10 PFCAs, C-6 and C-8 PFSAs, 6:2FTS, and N-EtFOSAA. Notably, it also successfully removed the highly challenging GenX (&gt;94 %) within 24 h. ZFC also demonstrated effective removal of PFAS mixtures, achieving &gt; 85-99 % for most compounds, though at a slower rate compared to AZFC. However, the removal rate for GenX was significantly lower, reaching only similar to 50 % even after 72 h. These results highlight the crucial role of both surface area and nitrogen content in PFAS adsorption behavior. While AZFC&apos;s enhanced surface properties facilitated rapid adsorption kinetics, the nitrogen-rich ZFC contributed significantly to short-chain PFAS removal, although at a slower rate. In addition to its high sorption capacity and tolerance for complex water quality conditions, AZFC was regenerable and reusable for at least four cycles. This study underscores the importance of balancing surface area and nitrogen functionality to optimize adsorbents for effective PFAS removal from water.

Název v anglickém jazyce

Enhanced removal of PFAS in water using activated ZIF-8 carbons: High adsorption efficiency, repeatable regenerability and reusability

Popis výsledku anglicky

Identifying an effective adsorbent to remove the complex mixtures of per- and polyfluoroalkyl substances (PFAS) from water is crucial to address this challenge. Herein, we introduce the hierarchical porous activated carbons derived from ZIF-8, namely ZIF-8 carbon (ZFC) and activated ZFC (AZFC) as potential candidates for removing mixtures of 11 PFAS such as C-6-C-10 perfluoro carboxylic acids (PFCAs); C-4, C-6, C-8 perfluoro sulfonic acids (PFSAs); 6:2 fluorotelomer sulfonic acid (6:2 FTS); 2-N-ethyl perfluorooctane sulfonamido acetic acid (NEtFOSAA); and undecafluoro-2-methyl-3-oxahexanoic acid (GenX), in ultrapure water at 10 mu g/L each. Out of three porous sorbents evaluated, AZFC demonstrated exceptional performance, achieving &gt; 99 % removal for C6C10 PFCAs, C-6 and C-8 PFSAs, 6:2FTS, and N-EtFOSAA. Notably, it also successfully removed the highly challenging GenX (&gt;94 %) within 24 h. ZFC also demonstrated effective removal of PFAS mixtures, achieving &gt; 85-99 % for most compounds, though at a slower rate compared to AZFC. However, the removal rate for GenX was significantly lower, reaching only similar to 50 % even after 72 h. These results highlight the crucial role of both surface area and nitrogen content in PFAS adsorption behavior. While AZFC&apos;s enhanced surface properties facilitated rapid adsorption kinetics, the nitrogen-rich ZFC contributed significantly to short-chain PFAS removal, although at a slower rate. In addition to its high sorption capacity and tolerance for complex water quality conditions, AZFC was regenerable and reusable for at least four cycles. This study underscores the importance of balancing surface area and nitrogen functionality to optimize adsorbents for effective PFAS removal from water.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20400 - Chemical engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Chemical Engineering Journal

ISSN

1385-8947

e-ISSN

1873-3212

Svazek periodika

507

Číslo periodika v rámci svazku

160192

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

10

Strana od-do

nestránkováno

Kód UT WoS článku

001427444200001

EID výsledku v databázi Scopus

2-s2.0-85217281625