Enhanced disinfection by-product formation due to nanoparticles in wastewater treatment plant effluents

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dc.contributor.authorMetch, Jacob W.en
dc.contributor.authorMa, Yanjunen
dc.contributor.authorPruden, Amyen
dc.contributor.authorVikesland, Peter J.en
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessed2016-03-17en
dc.date.accessioned2016-03-18T22:24:54Zen
dc.date.available2016-03-18T22:24:54Zen
dc.date.issued2015-07-13en
dc.description.abstractNanoparticles (NPs) are increasingly being incorporated into consumer products and are being used for industrial applications in ways that will lead to their environmental dissemination via wastewater treatment plants (WWTPs). Many NPs possess catalytic properties that could potentially enhance undesired chemical reactions such as the formation of disinfection by-products during disinfection of wastewater effluent. In this effort, silver (AgNPs), titanium dioxide (TiO2), ceria (CeO2), and nano zero valent iron (NZVI) NPs were investigated for their potential to enhance trihalomethane (THM) formation in three different disinfection regimes: UV alone, free chlorine, and UV+free chlorine. Of the test nanomaterials, only AgNPs demonstrated the capacity to enhance THM formation and thus they were subjected to additional study. AgNPs enhanced THM formation at all concentrations examined (1, 10, and 20 mg L-1) even though the AgNPs were chemically unstable in the presence of free chlorine. The transformation of the AgNPs and the production of non-metallic silver species was observed via UV-vis spectroscopy. The capacity for AgNPs to enhance THM formation was considerably increased in the UV+free chlorine disinfection regime. Although not the focus of the study, formation of AgNPs during UV disinfection of Ag+ in the effluent was also observed. This study illustrates the potential for NPs to catalyze unfavorable chemical reactions during WWTP effluent disinfection. Such a result could prove detrimental to aquatic receiving environments and is especially of concern in water reuse scenarios where aggressive disinfection regimes may be utilized.en
dc.description.notesContains supplementary information fileen
dc.description.notes2015 Royal Society of Chemistry Open Access Gold Articleen
dc.description.sponsorshipUnited States. Environmental Protection Agencyen
dc.description.sponsorshipNational Science Foundation (U.S.)en
dc.description.sponsorshipCenter for the Environmental Implications of NanoTechnologyen
dc.description.sponsorshipVirginia Tech. Institute for Critical Technology and Applied Scienceen
dc.format.extent9 p.en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationMetch, J. W., Ma, Y., Pruden, A., & Vikesland, P. J. (2015). Enhanced disinfection by-product formation due to nanoparticles in wastewater treatment plant effluents. Environmental Science: Water Research & Technology, 1(6), 823-831. doi:10.1039/C5EW00114Een
dc.identifier.doihttps://doi.org/10.1039/C5EW00114Een
dc.identifier.issn2053-1400en
dc.identifier.issue6en
dc.identifier.other2015_Metch_Enhanced_disinfection_by_product.pdfen
dc.identifier.otherMetch_Enhanced_disinfection_supp_info.pdfen
dc.identifier.otherStar Grant 834856en
dc.identifier.otherEF-0830093en
dc.identifier.urihttp://hdl.handle.net/10919/64959en
dc.identifier.volume1en
dc.language.isoenen
dc.publisherThe Royal Society of Chemistryen
dc.rightsCreative Commons Attribution-NonCommercial 3.0 Unporteden
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/en
dc.titleEnhanced disinfection by-product formation due to nanoparticles in wastewater treatment plant effluentsen
dc.title.serialEnvironmental Science: Water Research & Technologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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Scholarly Works, Civil and Environmental Engineering
Destination Area: Global Systems Science (GSS)