Is sorption technology fit for the removal of persistent and mobile organic contaminants from water?

Autor: Aumeier BM; RWTH Aachen University, Institute of Environmental Engineering, Mies-van-der-Rohe-Strasse 1, 52074 Aachen, Germany. Electronic address: aumeier@isa.rwth-aachen.de., Georgi A; Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Engineering, 04318 Leipzig, Germany., Saeidi N; Helmholtz Centre for Environmental Research - UFZ, Department of Environmental Engineering, 04318 Leipzig, Germany., Sigmund G; Department of Environmental Geosciences, Centre for Microbiology and Environmental Systems Science, University of Vienna, 1090 Wien, Austria; Environmental Technology, Wageningen University & Research, P.O. Box 17, 6700 AA Wageningen, the Netherlands. Electronic address: gabriel.sigmund@wur.nl.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2023 Jul 01; Vol. 880, pp. 163343. Date of Electronic Publication: 2023 Apr 06.
DOI: 10.1016/j.scitotenv.2023.163343
Abstrakt: Persistent, Mobile, and Toxic (PMT) and very persistent and very mobile (vPvM) substances are a growing threat to water security and safety. Many of these substances are distinctively different from other more traditional contaminants in terms of their charge, polarity, and aromaticity. This results in distinctively different sorption affinities towards traditional sorbents such as activated carbon. Additionally, an increasing awareness on the environmental impact and carbon footprint of sorption technologies puts some of the more energy-intensive practices in water treatment into question. Commonly used approaches may thus need to be readjusted to become fit for purpose to remove some of the more challenging PMT and vPvM substances, including for example short chained per- and polyfluoroalkyl substances (PFAS). We here critically review the interactions that drive sorption of organic compounds to activated carbon and related sorbent materials and identify opportunities and limitations of tailoring activated carbon for PMT and vPvM removal. Other less traditional sorbent materials, including ion exchange resins, modified cyclodextrins, zeolites and metal-organic frameworks are then discussed for potential alternative or complementary use in water treatment scenarios. Sorbent regeneration approaches are evaluated in terms of their potential, considering reusability, potential for on-site regeneration, and potential for local production. In this context, we also discuss the benefits of coupling sorption to destructive technologies or to other separation technologies. Finally, we sketch out possible future trends in the evolution of sorption technologies for PMT and vPvM removal from water.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 The Authors. Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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