Enhanced removal of PFAS in water using activated ZIF-8 carbons: High adsorption efficiency, repeatable regenerability and reusability
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Enhanced removal of PFAS in water using activated ZIF-8 carbons: High adsorption efficiency, repeatable regenerability and reusability
Original language description
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 > 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 (>94 %) within 24 h. ZFC also demonstrated effective removal of PFAS mixtures, achieving > 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'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.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20400 - Chemical engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Engineering Journal
ISSN
1385-8947
e-ISSN
1873-3212
Volume of the periodical
507
Issue of the periodical within the volume
160192
Country of publishing house
CH - SWITZERLAND
Number of pages
10
Pages from-to
nestránkováno
UT code for WoS article
001427444200001
EID of the result in the Scopus database
2-s2.0-85217281625