The electrochemical elimination of coliforms from water using BBD/Ti or graphite anodes: A comparative study

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dc.citation.journalTitleWater Science and Technology-Water Supplyeng
dc.contributor.authorGil Pavas, E.
dc.contributor.authorArbelaez, Paula Eliana
dc.contributor.authorMedina, J.
dc.contributor.authorDobrosz-Gómez, I.
dc.contributor.authorAngel Gomez-Garcia, Miguel
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Procesosspa
dc.contributor.researchgroupDesarrollo y Diseño de Procesosspa
dc.date.accessioned2021-04-12T19:06:21Z
dc.date.available2021-04-12T19:06:21Z
dc.date.issued2018-04-01
dc.description.abstractThe elimination of total and fecal coliforms, from raw surface water, was carried out by electrochemical oxidation using either boron doped diamond (BDD/Ti) or graphite (GP) anodes, in a chloride-free medium. The optimal values of the operation parameters, maximizing the coliform elimination percentage, were determined using statistical experimental design. The current density ( j: 2-20 mA/cm2), the conductivity (s: 500-900 µS/cm) and the anode materials (An) were considered as variables to perform the Box-Behnken experimental design together with the response surface methodology analysis for optimization. The statistical analysis indicated that, in the evaluated range, the disinfection efficiency increased with an increase in j and decreased with an increase in s. The following optimal conditions for the elimination of total and fecal coliforms were found: j: 10 mA/cm2, s: 500 µS/cm and BDD/Ti used as anode material. The BDD/Ti electrode let to achieve complete coliform elimination after ca. 20 min of reaction while the GP one needed ca. 27 min. In water treated with both BDD/Ti and GP anode, after 7 days, any coliforms growth was observed. As a result of the oxidation process, the total organic carbon and nitrite concentration decreased while nitrate concentration increased. © IWA Publishing 2018.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=8006
dc.identifier.doi10.2166/ws.2017.147
dc.identifier.issn16069749
dc.identifier.otherWOS;000428426900006
dc.identifier.otherSCOPUS;2-s2.0-85045190103
dc.identifier.urihttp://hdl.handle.net/10784/28260
dc.language.isoeng
dc.publisherInternational Water Association Publishing
dc.relationDOI;10.2166/ws.2017.147
dc.relationWOS;000428426900006
dc.relationSCOPUS;2-s2.0-85045190103
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85045190103&doi=10.2166%2fws.2017.147&partnerID=40&md5=dd54338a6b3e7ca317a89c5991d2b503
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/1606-9749
dc.sourceWater Science and Technology-Water Supply
dc.subjectBoolean functionseng
dc.subjectChlorine compoundseng
dc.subjectDisinfectioneng
dc.subjectElectrochemical oxidationeng
dc.subjectGraphiteeng
dc.subjectOptimizationeng
dc.subjectOrganic carboneng
dc.subjectStatisticseng
dc.subjectSurface waterseng
dc.subjectWater treatmenteng
dc.subjectBox-Behnken experimental designeng
dc.subjectDisinfection efficiencyeng
dc.subjectElectrochemicaleng
dc.subjectNitrate concentrationeng
dc.subjectOperation parameterseng
dc.subjectResponse surface methodologyeng
dc.subjectStatistical experimental designeng
dc.subjectTotal and fecal coliformseng
dc.subjectAnodeseng
dc.subjectboron doped diamondeng
dc.subjectdiamondeng
dc.subjectgraphiteeng
dc.subjectnitriteeng
dc.subjectsurface watereng
dc.subjecttitaniumeng
dc.subjectunclassified drugeng
dc.subjectwatereng
dc.subjectcomparative studyeng
dc.subjectconcentration (composition)eng
dc.subjectdiamondeng
dc.subjectdisinfectioneng
dc.subjectelectrochemical methodeng
dc.subjectelectrodeeng
dc.subjectexperimental designeng
dc.subjectfecal coliformeng
dc.subjectgraphiteeng
dc.subjectmethodologyeng
dc.subjectnitrateeng
dc.subjectnitriteeng
dc.subjectoptimizationeng
dc.subjectoxidationeng
dc.subjectresponse surface methodologyeng
dc.subjecttotal organic carboneng
dc.subjectwater treatmenteng
dc.subjectArticleeng
dc.subjectbacterial growtheng
dc.subjectcoliform bacteriumeng
dc.subjectcomparative studyeng
dc.subjectconductanceeng
dc.subjectcurrent densityeng
dc.subjectdisinfectioneng
dc.subjectelectrochemistryeng
dc.subjectexperimental designeng
dc.subjectfecal coliformeng
dc.subjectoxidationeng
dc.subjectpathogen clearanceeng
dc.subjectreaction optimizationeng
dc.subjectresponse surface meteng
dc.titleThe electrochemical elimination of coliforms from water using BBD/Ti or graphite anodes: A comparative studyeng
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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