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dc.creatorBeita Sandí, Wilson
dc.creatorSelim Ersan, Mahmut
dc.creatorUzun, Habibullah
dc.creatorKaranfil, Tanju
dc.date.accessioned2018-04-03T21:52:35Z
dc.date.available2018-04-03T21:52:35Z
dc.date.issued2016-01-01
dc.identifier.citationhttps://www.sciencedirect.com/science/article/pii/S0043135415303262?via%3Dihubes_ES
dc.identifier.issn0043-1354
dc.identifier.urihttp://hdl.handle.net/10669/74412
dc.description.abstractThe main objective of this study was to examine the roles of powdered activated carbon (PAC) characteristics (i.e., surface chemistry, pore size distribution, and surface area) in the removal of N-nitrosodimethylamine (NDMA) formation potential (FP) in surface and wastewater-impacted waters. Also, the effects of natural attenuation of NDMA precursors in surface waters, NDMA FP concentration, and carbon dose on the removal of NDMA FP by PAC were evaluated. Finally, the removal of NDMA FP by PAC at two full-scale DWTPs was monitored. Wastewater-impacted and surface water samples were collected to conduct adsorption experiments using different PACs and activated carbon fibers (ACFs) with a wide range of physicochemical characteristics. The removal efficiency of NDMA FP by PAC was significantly higher in wastewater-impacted than surface waters. Adsorbable NDMA precursors showed a size distribution in the waters tested; the adsorbable fraction included precursors accessing the pore size regions of 10–20 Å and <10 Å. Basic carbons showed higher removal of NDMA FP than acidic carbons on a surface area basis. The overall removal of NDMA FP by PAC on a mass basis depended on the surface area, pore size distribution and pHPZC. Thus, PACs with hybrid characteristics (micro and mesoporous), higher surface areas, and basic surface chemistry are more likely to be effective for NDMA precursor control by PAC adsorption. The application of PAC in DWTPs for taste and odor control resulted in an additional 20% removal of NDMA FP for the PAC doses of 7–10 mg/L. The natural attenuation of NDMA precursors through a combination of processes (biodegradation, photolysis and adsorption) decreased their adsorbability and removal by PAC adsorption.es_ES
dc.description.sponsorshipWater Research Foundation/[4444]//Estados Unidoses_ES
dc.language.isoen_USes_ES
dc.sourceWater Research, Vol. 88, p.711-718es_ES
dc.subjectNDMAes_ES
dc.subjectPACes_ES
dc.subjectCarbon fiberses_ES
dc.subjectPrecursorses_ES
dc.subjectFormation potentiales_ES
dc.subjectDisinfection by-productses_ES
dc.subject631.826 Acondicionadores para textura del suelo
dc.titleRemoval of N-nitrosodimethylamine precursors with powdered activated carbon adsorptiones_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.typeArtículo científicoes_ES
dc.identifier.doi10.1016/j.watres.2015.10.062
dc.description.procedenceUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Básicas::Centro en Investigación en Contaminación Ambiental (CICA)es_ES
dc.description.procedenceUCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Química
dc.identifier.pmid26584342


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