Optimization and toxicity assessment of a combined electrocoagulation, H2O2/Fe2+/UV and activated carbon adsorption for textile wastewater treatment

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dc.citation.journalTitleSCIENCE OF THE TOTAL ENVIRONMENT
dc.contributor.authorGilPavas, E
dc.contributor.authorDobrosz-Gomez, I
dc.contributor.authorGomez-Garcia, MA
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Procesosspa
dc.contributor.researchgroupProcesos Ambientales (GIPAB)spa
dc.creatorGilPavas, E
dc.creatorDobrosz-Gomez, I
dc.creatorGomez-Garcia, MA
dc.date.accessioned2021-04-16T20:27:39Z
dc.date.available2021-04-16T20:27:39Z
dc.date.issued2019-02-15
dc.description.abstractIn this study, the potential application of sequential Electrocoagulation + Fenton (F) or Photo-Fenton (PF) + Active carbon adsorption (EC + F/PF + AC) processes were analyzed as alternatives for the treatment of an industrial textile wastewater resulting from an industrial facility located in Medellín (Colombia). In order to maximize the organic matter degradation, each step of the treatment was optimized using the Response Surface Methodology. At first, the optimal performance of EC was achieved with Fe electrodes operating at pH = 7, jEC = 10 mA/cm2 and 60 rpm, during 10 min of electrolysis. At these conditions, EC let to remove 94% of the dye's color, 56% of the COD and 54% of the TOC. Next, sequentially applied Fenton or photo-Fenton process (i.e., EC + F/PF), operating at the optimized conditions (pH = 4.3, [Fe2+] = 1.1 mM, [H2O2] = 9.7 mM, stirring velocity = 100 rpm and reaction time = 60 min.), improved the quality of the treated effluent. The EC + F let to achieve total color reduction, as well as COD and TOC removals of 72 and 75%, respectively. The EC + PF reached 100% of color, 76% of COD and 78% of TOC reductions. The EC + F/PF processes were more efficient than EC in elimination of low molecular weight (<5 kDa) compounds from wastewater. Moreover, the BOD5/COD ratio increased from 0.21 to 0.42 and from 0.21 to 0.46 using EC + F and EC + PF processes, respectively. However, EC + F/PF were not fully effective for the removal of acute toxicity to Artemia salina: 20% and 60% of reduction in toxicity using EC + F and EC + PF, respectively, comparing to very toxic (100%) raw textile wastewater. Thus, activated carbon adsorption was applied as an additional step to complete the treatment. After AC adsorption, the acute toxicity decreased to 10% and 0% using EC + F and EC + PF, respectively. The total operational costs, including chemical reagents, electrodes, energy consumption and sludge disposal, were of 1.65 USD/m3 and 2.3 USD/m3 for EC + F and EC + PF, respectively. © 2018 Elsevier B.V.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=8499
dc.identifier.doi10.1016/j.scitotenv.2018.09.125
dc.identifier.issn00489697
dc.identifier.issn18791026
dc.identifier.otherWOS;000447915400054
dc.identifier.otherPUBMED;30245411
dc.identifier.otherSCOPUS;2-s2.0-85053749414
dc.identifier.urihttp://hdl.handle.net/10784/29407
dc.language.isoeng
dc.publisherElsevier
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85053749414&doi=10.1016%2fj.scitotenv.2018.09.125&partnerID=40&md5=25a593d7934a40d7c963cebcc2b3de54
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0048-9697
dc.sourceSCIENCE OF THE TOTAL ENVIRONMENT
dc.subjectActivated carboneng
dc.subjectAdsorptioneng
dc.subjectCoagulationeng
dc.subjectColoreng
dc.subjectEffluentseng
dc.subjectElectrodeseng
dc.subjectEnergy utilizationeng
dc.subjectImage processingeng
dc.subjectIndustrial water treatmenteng
dc.subjectOptimizationeng
dc.subjectOxidationeng
dc.subjectSludge disposaleng
dc.subjectTextileseng
dc.subjectToxicityeng
dc.subjectWastewater disposaleng
dc.subjectWastewater treatmenteng
dc.subjectElectro coagulationseng
dc.subjectFentoneng
dc.subjectIndustrial textileseng
dc.subjectPhoto-Fentoneng
dc.subjectToxicity assessmenteng
dc.subjectActivated carbon treatmenteng
dc.subjectactivated carboneng
dc.subjectferrous gluconateeng
dc.subjecthydrogen peroxideeng
dc.subjectironeng
dc.subjectorganic mattereng
dc.subjectcharcoaleng
dc.subjectferric ioneng
dc.subjecthydrogen peroxideeng
dc.subjectactivated carboneng
dc.subjectadsorptioneng
dc.subjectassessment methodeng
dc.subjectcoagulationeng
dc.subjectoptimizationeng
dc.subjectresponse surface methodologyeng
dc.subjecttextile industryeng
dc.subjecttoxicityeng
dc.subjectwastewater treatmenteng
dc.subjectacute toxicityeng
dc.subjectadsorptioneng
dc.subjectanalytic methodeng
dc.subjectArtemia salinaeng
dc.subjectArticleeng
dc.subjectbiochemical oxygen demandeng
dc.subjectchemical oxygen demandeng
dc.subjectColombiaeng
dc.subjectcontrolled studyeng
dc.subjectdegradationeng
dc.subjecteffluenteng
dc.subjectelectrocoagulationeng
dc.subjectelectrolysiseng
dc.subjectenergy consumptioneng
dc.subjectmolecular weighteng
dc.subjectnonhumaneng
dc.subjectpHeng
dc.subjectpriority journaleng
dc.subjectreaction timeeng
dc.subjectresponse surface methodeng
dc.subjectsludge disposaleng
dc.subjectultraviolet radiationeng
dc.subjectwaste watereng
dc.titleOptimization and toxicity assessment of a combined electrocoagulation, H2O2/Fe2+/UV and activated carbon adsorption for textile wastewater treatmenteng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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