Using TiO2-Diatomite for photodisinfection in contaminated wastewater

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dc.contributor.authorKOTANI, PALOMA O.pt_BR
dc.contributor.authorFERRO, DAPHNE M.pt_BR
dc.contributor.authorTAVARES, LAURA P.pt_BR
dc.contributor.authorAFFONSO, REGINApt_BR
dc.contributor.authorORTIZ, NILCEpt_BR
dc.coverageInternacionalpt_BR
dc.creator.eventoANNUAL MEETING OF THE BRAZILIAN SOCIETY FOR BIOCHEMISTRY AND MOLECULAR BIOLOGY (SBBq), 51st; CONGRESS OF BRAZILIAN BIOPHYSICAL SOCIETY (SBBf)/LATIN AMERICAN FEDERATION OF BIOPHYSICAL SOCIETIES (Lafebs), 46thpt_BR
dc.date.accessioned2023-03-21T15:48:33Z
dc.date.available2023-03-21T15:48:33Z
dc.date.eventoSeptember 5-8, 2022pt_BR
dc.description.abstractINTRODUCTION: The urban pressure reduced water availability and quality through the years, promoting the development of water treatment and disinfection processes such as the Advanced Oxidation Process (AOP). A highly efficient catalyst with Diatomite as biotemplate and solar energy can enhance hydroxyl radicals (OH) production for disinfection and pollutants degradation. Preliminary TiO2-Diatomite experiments with Escherichia coli provided valuable insights on its photodisinfection efficiency, legitimating its usage in the wastewater samples presented in this study. OBJECTIVES: Evaluate the use of TiO2-Diatomite in photodisinfection process in contaminated wastewater. MATERIALS AND METHODS: TiO2 synthesis used titanium isopropoxide sol-gel process with Diatomite powder, the filtration step followed the mixed water suspension, and the drying process lasted overnight. The wastewater samples were collected from a household washing machine and 0.05 g of TiO2-Diatomite were added in the photodisinfection reactor. The total reaction lasted for 90 minutes in the solar chamber with all parameters controlled. The suspension aliquots were collected after 30 minutes of agitation and plated on LB agar at Petri plates. After incubation, the emerged colonies were counted through software (OpenCFU) and the data processed using R programming language. DISCUSSION AND RESULTS: The Scanning Electron Microscopy (SEM) micrograph of TiO2-Diatomite presented enhanced surface area and microstructure obtained by biotemplate addition. The bacterial inactivation percentage was above 75 % for 1 hour of solar radiation exposure. Kinetics models indicated better correspondence with interparticle reaction. CONCLUSION: Photodisinfection kinetics studies provided more efficient bacterial inactivation with the addition of 0.05 g of TiO2-Diatomite in the sample. The study presents an affordable and sustainable treatment using a viable renewable energy source for application in distant areas with contaminated effluents with the addition of a reagent easily obtained by government agencies.pt_BR
dc.format.extent212-212pt_BR
dc.identifier.citationKOTANI, PALOMA O.; FERRO, DAPHNE M.; TAVARES, LAURA P.; AFFONSO, REGINA; ORTIZ, NILCE. Using TiO2-Diatomite for photodisinfection in contaminated wastewater. In: ANNUAL MEETING OF THE BRAZILIAN SOCIETY FOR BIOCHEMISTRY AND MOLECULAR BIOLOGY (SBBq), 51st; CONGRESS OF BRAZILIAN BIOPHYSICAL SOCIETY (SBBf)/LATIN AMERICAN FEDERATION OF BIOPHYSICAL SOCIETIES (Lafebs), 46th, September 5-8, 2022, Águas de Lindóia, SP. <b>Abstract...</b> São Paulo, SP: Sociedade Brasileira de Bioquímica e Biologia Molecular - SBBq, 2022. p. 212-212. Disponível em: http://repositorio.ipen.br/handle/123456789/33914.
dc.identifier.orcid0000-0002-7737-3732pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7737-3732
dc.identifier.orcidhttps://orcid.org/0000-0002-9264-4262
dc.identifier.urihttp://repositorio.ipen.br/handle/123456789/33914
dc.localSão Paulo, SPpt_BR
dc.local.eventoÁguas de Lindóia, SPpt_BR
dc.publisherSociedade Brasileira de Bioquímica e Biologia Molecular - SBBqpt_BR
dc.rightsopenAccesspt_BR
dc.titleUsing TiO2-Diatomite for photodisinfection in contaminated wastewaterpt_BR
dc.typeResumo de eventos científicospt_BR
dspace.entity.typePublication
ipen.autorDAPHNE MONTESUMA FERRO
ipen.autorNILCE ORTIZ
ipen.autorREGINA AFFONSO
ipen.autorLAURA PAVARIN TAVARES
ipen.autorPALOMAOTSUKAKOTANI
ipen.codigoautor15612
ipen.codigoautor904
ipen.codigoautor1547
ipen.codigoautor15668
ipen.codigoautor15524
ipen.contributor.ipenauthorDAPHNE MONTESUMA FERRO
ipen.contributor.ipenauthorNILCE ORTIZ
ipen.contributor.ipenauthorREGINA AFFONSO
ipen.contributor.ipenauthorLAURA PAVARIN TAVARES
ipen.contributor.ipenauthorPALOMAOTSUKAKOTANI
ipen.date.recebimento23-03
ipen.event.datapadronizada2022pt_BR
ipen.identifier.ipendoc29548pt_BR
ipen.notas.internasAbstractpt_BR
ipen.type.genreResumo
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relation.isAuthorOfPublication97da04b7-6659-49f0-b893-0698c583c338
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relation.isAuthorOfPublication.latestForDiscoveryb7950aa0-8285-4f5d-ae73-b4a73daaf12c
sigepi.autor.atividadeORTIZ, NILCE:904:510:Npt_BR
sigepi.autor.atividadeAFFONSO, REGINA:1547:810:Npt_BR
sigepi.autor.atividadeTAVARES, LAURA P.:15668:510:Npt_BR
sigepi.autor.atividadeFERRO, DAPHNE M.:15612:510:Npt_BR
sigepi.autor.atividadeKOTANI, PALOMA O.:15524:510:Spt_BR
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