Assessment of the optimized treatment of indigo-polluted industrial textile wastewater by a sequential electrocoagulation-activated carbon adsorption process

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dc.citation.journalTitleJournal of Water Process Engineeringeng
dc.contributor.authorGilPavas E.
dc.contributor.authorCorrea-Sanchez S.
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Procesosspa
dc.contributor.researchgroupDesarrollo y Diseño de Procesosspa
dc.date.accessioned2021-04-12T19:06:22Z
dc.date.available2021-04-12T19:06:22Z
dc.date.issued2020-01-01
dc.description.abstractWastewater collected from a local jean manufacturing plant was treated using an electrocoagulation process (EC) coupled with activated carbon (AC) adsorption. The process variables were optimized using multivariate regression coupled with nonlinear programming with nonlinear restrictions to achieve the lowest possible cost while keeping a high enough degradation rate for chemical oxygen demand (COD), color, and turbidity to fulfill the Colombian environmental regulation requirements. Under optimal conditions (pH = 5.4, s =2 mS/cm, j =14 mA/cm2, and t = 11 min) color, COD, and TOC removals of 95%, 63%, and 51%, respectively, were achieved. The biodegradability index also increased from 0.13 to 0.29, whereas toxicity tests showed a remaining toxicity of 45%. A kinetic study was conducted for the EC process. The activated carbon (AC) adsorption process was successfully used to completely remove toxicity, while further increasing color, COD, and TOC removals to 96%, 72%, and 61%, respectively. The conditions for the AC adsorption process (20 g/L of AC and 1 h) were determined by experimental adsorption isotherms and kinetic studies. The optimized EC/AC process led to an effluent satisfying the Colombian regulations and seems technologically viable with lower costs than other similar process that were reported in previous works. © 2020 Elsevier Ltdeng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=11889
dc.identifier.doi10.1016/j.jwpe.2020.101306
dc.identifier.issn22147144
dc.identifier.otherWOS;000542175500017
dc.identifier.otherSCOPUS;2-s2.0-85084219938
dc.identifier.urihttp://hdl.handle.net/10784/28274
dc.language.isoeng
dc.publisherElsevier Ltd
dc.relationDOI;10.1016/j.jwpe.2020.101306
dc.relationWOS;000542175500017
dc.relationSCOPUS;2-s2.0-85084219938
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85084219938&doi=10.1016%2fj.jwpe.2020.101306&partnerID=40&md5=435517d38c636ae409eac57c139f1603
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/2214-7144
dc.sourceJournal of Water Process Engineering
dc.subjectactivated carboneng
dc.subjectelectrocoagulationeng
dc.subjectindigoeng
dc.subjectoptimizationeng
dc.subjectTextile wastewatereng
dc.subjecttoxicityeng
dc.titleAssessment of the optimized treatment of indigo-polluted industrial textile wastewater by a sequential electrocoagulation-activated carbon adsorption processeng
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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