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Appl. Sci. 2018, 8(2), 166; doi:10.3390/app8020166

Nanofiber-Based Materials for Persistent Organic Pollutants in Water Remediation by Adsorption

Institute for Frontier Materials, Deakin University, Geelong VIC 3220, Australia
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Received: 22 December 2017 / Revised: 17 January 2018 / Accepted: 17 January 2018 / Published: 24 January 2018
(This article belongs to the Special Issue Nanotechnology in Wastewater Treatment Technology)
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Abstract

Fresh water is one of the most precious resources for our society. As a cause of oxygen depletion, organic pollutants released into water streams from industrial discharges, fertilizers, pesticides, detergents or consumed medicines can raise toxicological concerns due to their long-range transportability, bio-accumulation and degradation into carcinogenic compounds. The Stockholm Convention has named 21 persistent organic pollutants (POP) so far. As opposed to other separation techniques, adsorption, typically performed with activated carbons, offers opportunities to combine low operation costs with high performance as well as fast kinetics of capture if custom-designed with the right choice of adsorbent structure and surface chemistry. Nanofibers possess a higher surface to volume ratio compared to commercial macro-adsorbents, and a higher stability in water than other adsorptive nanostructures, such as loose nanoparticles. This paper highlights the potential of nanofibers in organic pollutant adsorption and thus provides an up-to-date overview of their employment for the treatment of wastewater contaminated by disinfectants and pesticides, which is benchmarked with other reported adsorptive structures. The discussion further investigates the impact of adsorbent pore geometry and surface chemistry on the resulting adsorption performance against specific organic molecules. Finally, insight into the physicochemical properties required for an adsorbent against a targeted pollutant is provided. View Full-Text
Keywords: nanofibers; adsorption; organic pollution; persistent organic pollutant POP; adsorption mechanisms; adsorbent characteristics; surface chemistry; pesticides; disinfectants; phenol nanofibers; adsorption; organic pollution; persistent organic pollutant POP; adsorption mechanisms; adsorbent characteristics; surface chemistry; pesticides; disinfectants; phenol
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des Ligneris, E.; Dumée, L.F.; Kong, L. Nanofiber-Based Materials for Persistent Organic Pollutants in Water Remediation by Adsorption. Appl. Sci. 2018, 8, 166.

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