Volatilization of Toxic alpha,beta-Unsaturated Aldehydes Compounds During Activated Sludge Treatment of Polyester Manufacturing Industry Wastewater

dc.creatorCaffaro, RA
dc.creatorGrossman, MJ
dc.creatorDurrant, LR
dc.date2011
dc.dateJUN
dc.date2014-08-01T18:15:57Z
dc.date2015-11-26T16:59:33Z
dc.date2014-08-01T18:15:57Z
dc.date2015-11-26T16:59:33Z
dc.date.accessioned2018-03-28T23:47:13Z
dc.date.available2018-03-28T23:47:13Z
dc.identifierEnvironmental Engineering Science. Mary Ann Liebert Inc, v. 28, n. 6, n. 415, n. 419, 2011.
dc.identifier1092-8758
dc.identifierWOS:000291200500004
dc.identifier10.1089/ees.2010.0244
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/76219
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/76219
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1278220
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionPolyester manufacturing wastewater consists of water formed as a coproduct of step-growth polymerization reactions, typically performed between diols and dicarboxylic acids. Due to the solubility of the reactants and byproducts of polymerization, the wastewater is typically heavily contaminated and can possess considerable toxicity that can strongly inhibit biological wastewater treatment processes. However, very little has been published on the treatment of wastewater produced during polyester manufacture. We have demonstrated that the toxicity of the wastewater is largely attributable to volatile organic compounds (VOCs). Gas chromatography and mass spectrometry analysis of the wastewater revealed highly toxic and mutagenic alpha,beta-unsaturated aldehydes (acrolein congeners) as major components of the VOCs present. Activated sludge treatment was performed under two aeration regimes, coarse bubble sparging and passive aeration through the surface layer, to access their effect on biodegradation/volatilization. After 24 h of incubation in the presence of 10% polyester plant wastewater, coarse bubble sparging resulted in 88% reduction in chemical oxygen demand compared to 45% with passive aeration, both largely attributable to VOC volatilization. The polyester wastewater demonstrated high toxicity as indicated by a net decline in volatile suspended solids under both culture conditions, consistent with previous toxicity assays. Results indicate that significant VOC volatilization would occur during activated sludge treatment of polyester manufacturing wastewater containing the identified acrolein congeners. To prevent toxic VOCs exposure to plant workers and improve biodegradability, we recommend polyester wastewater containing alpha,beta-unsaturated aldehydes be pretreated by air stripping to remove VOCs and incineration of the stripped VOCs before activated sludge treatment.
dc.descriptiono TEXTO COMPLETO DESTE ARTIGO, ESTARÁ DISPONÍVEL À PARTIR DE AGOSTO DE 2015.
dc.description28
dc.description6
dc.description415
dc.description419
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageen
dc.publisherMary Ann Liebert Inc
dc.publisherNew Rochelle
dc.publisherEUA
dc.relationEnvironmental Engineering Science
dc.relationEnviron. Eng. Sci.
dc.rightsembargo
dc.sourceWeb of Science
dc.subjectPolyester manufacturing industrial wastewater
dc.subjecttoxicity, pollution, volatile organic compounds
dc.subjectVOCs
dc.subjectaerobic treatment
dc.subjectactivated sludge
dc.subjectalpha,beta-unsaturated aldehydes
dc.subjectacrolein congeners
dc.subject2-ethylacrolein
dc.subjectBeta-unsaturated Aldehydes
dc.subjectOrganic Toxicants
dc.subjectDirected Analysis
dc.subjectIdentification
dc.subjectMutagenicity
dc.subjectTreatability
dc.titleVolatilization of Toxic alpha,beta-Unsaturated Aldehydes Compounds During Activated Sludge Treatment of Polyester Manufacturing Industry Wastewater
dc.typeArtículos de revistas


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