Solar and artificial UV inactivation of bacterial microbes by Ca-alginate immobilized TiO2 assisted by H2O2 using fluidized bed photoreactors

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dc.citation.journalTitleJOURNAL OF ADVANCED OXIDATION TECHNOLOGIES
dc.contributor.authorGilPavas, Edison
dc.contributor.authorAcevedo, Jose
dc.contributor.authorLopez, Luis F.
dc.contributor.authorDobrosz-Gomez, Izabela
dc.contributor.authorAngel Gomez-Garcia, Miguel
dc.contributor.departmentUniversidad EAFIT. Departamento de Ingeniería de Procesosspa
dc.contributor.researchgroupProcesos Ambientales (GIPAB)spa
dc.creatorGilPavas, Edison
dc.creatorAcevedo, Jose
dc.creatorLopez, Luis F.
dc.creatorDobrosz-Gomez, Izabela
dc.creatorAngel Gomez-Garcia, Miguel
dc.date.accessioned2021-04-16T20:27:35Z
dc.date.available2021-04-16T20:27:35Z
dc.date.issued2014-07-01
dc.description.abstractIn this work, TiO2 (Degussa, P-25) supported on calcium alginate pearls was evaluated as catalyst for the photocatalytic inhibition of pathogenic microorganisms. Considering that water samples were taken directly from a natural source, a primary treatment (coagulation, sedimentation and filtration) was executed to remove solids and impurities. Photocatalytic experiments were carried out in two types of laboratory scale equipments, one using an annular UV irradiated reactor and the other a solar UV parabolic collector, both operated in the fluidized bed mode. H2O2 was included to the reactive mixture in order to enhance the photodegradation rate. The Response Surface Methodology and the Box-Behnken experimental design techniques were applied as tools for the optimization of the operational conditions of the UV water purification system. Thus, the influence of UV radiation, TiO2 dose and H2O2 concentration on the faecal and total coliform percentage degradation were statistically analysed. The following optimal operational conditions were found: UV radiation = 310 nm, TiO2 dose = 0.2 g/L and H2O2 concentration = 30 mg/L. After water treatment at optimized conditions, total microorganism growing inhibition was observed. Additional experiments allowed proving the reusability of the immobilized catalyst. © 2014 Science & Technology Network, Inc.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1261
dc.identifier.doi10.1515/jaots-2014-0219
dc.identifier.issn12038407
dc.identifier.otherWOS;000340717200019
dc.identifier.otherSCOPUS;2-s2.0-84906335289
dc.identifier.urihttp://hdl.handle.net/10784/29362
dc.language.isoeng
dc.publisherSCIENCE & TECHNOLOGY NETWORK INC
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84906335289&partnerID=40&md5=6e0433bbd13d10ce13b280269e20de2b
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/1203-8407
dc.sourceJOURNAL OF ADVANCED OXIDATION TECHNOLOGIES
dc.subjectAlginateeng
dc.subjectBacteriaeng
dc.subjectCatalystseng
dc.subjectChemical reactorseng
dc.subjectChemical water treatmenteng
dc.subjectFluid catalytic crackingeng
dc.subjectPhotocatalysiseng
dc.subjectRemovaleng
dc.subjectReusabilityeng
dc.subjectTitanium dioxideeng
dc.subjectUltraviolet radiationeng
dc.subjectWater filtrationeng
dc.subjectBacterial inactivationeng
dc.subjectBox-Behnken experimental designeng
dc.subjectCalcium alginateeng
dc.subjectFluidized bed photoreactorseng
dc.subjectFluidized bed reactorseng
dc.subjectPathogenic microorganismseng
dc.subjectResponse surface methodologyeng
dc.subjectWater purification systemseng
dc.subjectFluidized bedseng
dc.titleSolar and artificial UV inactivation of bacterial microbes by Ca-alginate immobilized TiO2 assisted by H2O2 using fluidized bed photoreactorseng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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