Recent advances and remaining barriers to the development of electrospun nanofiber and nanofiber composites for point-of-use and point-of-entry water treatment systems.

Autor:	Nalbandian MJ; Department of Civil Engineering and Construction Management, California Baptist University, 8432 Magnolia Avenue, Riverside, CA 92504., Kim S; Department of Civil and Environmental Engineering, University of Iowa, 4105 Seamans Center, Iowa City, IA 52242., Gonzalez-Ribot HE; Department of Civil and Environmental Engineering, University of Iowa, 4105 Seamans Center, Iowa City, IA 52242., Myung NV; Department of Chemical and Biomolecular Engineering, University of Notre Dame, 250 Nieuwland Hall, Notre Dame, IN 46556., Cwiertny DM; Department of Civil and Environmental Engineering, University of Iowa, 4105 Seamans Center, Iowa City, IA 52242.
Jazyk:	angličtina
Zdroj:	Journal of hazardous materials advances [J Hazard Mater Adv] 2022 Nov; Vol. 8. Date of Electronic Publication: 2022 Nov 19.
DOI:	10.1016/j.hazadv.2022.100204
Abstrakt:	In this review, we focus on electrospun nanofibers as a promising material alternative for the niche application of decentralized, point-of-use (POU) and point-of-entry (POE) water treatment systems. We focus our review on prior work with various formulations of electrospun materials, including nanofibers of carbon, pure metal oxides, functionalized polymers, and polymer-metal oxide composites, that exhibit analogous performance to media (e.g., activated carbon, ion exchange resins) commonly used in commercially available, certified POU/POE devices for contaminants including organic pollutants, metals (e.g., lead) and persistent oxyanions (e.g., nitrate). We then analyze the relevant strengths and remaining research and development opportunities of the relevant literature based on an evaluation framework that considers (i) performance comparison to commercial analogs; (ii) appropriate pollutant targets for POU/POE applications; (iii) testing in flow-through systems consistent with POU/POE applications; (iv) consideration of water quality effects; and (v) evaluation of material strength and longevity. We also identify several emerging issues in decentralized water treatment where nanofiber-based POU/POE devices could help meet existing needs including their use for treatment of uranium, disinfection, and in electrochemical treatment systems. To date, research has demonstrated promising material performance toward relevant targets for POU/POE applications, using appropriate aquatic matrices and considering material stability. To fully realize their promise as an emerging treatment technology, our analysis of the available literature reveals the need for more work that benchmarks nanofiber performance against established commercial analogs, as well as fabrication and performance validation at scales and under conditions simulating POU/POE water treatment. Competing Interests: Declaration of competing interests 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.
Databáze:	MEDLINE
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