Show simple item record

dc.contributor.authorSilva, Salatiel Wohlmuth dapt_BR
dc.contributor.authorVenzke, Carla Denizept_BR
dc.contributor.authorWelter, Júlia Bitencourtpt_BR
dc.contributor.authorSchneider, Daniela Eduardapt_BR
dc.contributor.authorFerreira, Jane Zoppaspt_BR
dc.contributor.authorRodrigues, Marco Antônio Siqueirapt_BR
dc.contributor.authorBernardes, Andrea Mourapt_BR
dc.date.accessioned2019-08-30T02:35:02Zpt_BR
dc.date.issued2019pt_BR
dc.identifier.issn1660-4601pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/198681pt_BR
dc.description.abstractThis work evaluated the performance of an electrochemical oxidation process (EOP), using boron-doped diamond on niobium substrate (Nb/BDD), for the treatment of a reverse osmosis concentrate (ROC) produced from a petrochemical wastewater. The effects of applied current density (5, 10, or 20 mA.cm^-2) and oxidation time (0 to 5 h) were evaluated following changes in chemical oxygen demand (COD) and total organic carbon (TOC). Current efficiency and specific energy consumption were also evaluated. Besides, the organic byproducts generated by EOP were analyzed by gas chromatography coupled to mass spectrometry (GC–MS). The results show that current densities and oxidation time lead to a COD and TOC reduction. For the 20 mA cm􀀀2, changes in the kinetic regime were found at 3 h and associated to the oxidation of inorganic ions by chlorinated species. After 3 h, the oxidants act in the organic oxidation, leading to a TOC removal of 71%. Although, due to the evolution of parallel reactions (O2, H2O2, and O3), the specific energy consumption also increased, the resulting consumption value of 66.5 kW h kg^-1 of COD is considered a low energy requirement representing lower treatment costs. These results encourage the applicability of EOP equipped with Nb/BDD as a treatment process for the ROC.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoporpt_BR
dc.relation.ispartofInternational Journal of Environmental Research and Public Health. Suiça. Vol. 16, no. 5 (Mar. 2019), 816 [12 p.]pt_BR
dc.rightsOpen Accessen
dc.subjectPetrochemical wastewateren
dc.subjectIndústria petroquímicapt_BR
dc.subjectReverse osmosis concentrateen
dc.subjectÁguas residuaispt_BR
dc.subjectBoron-doped diamond on niobium substrateen
dc.subjectTratamento de efluentespt_BR
dc.subjectOxidação eletroquímicapt_BR
dc.subjectElectrochemical advanced oxidationen
dc.subjectProcessos oxidativos avançadospt_BR
dc.titleElectrooxidation using Nb/BDD as post-treatment of a reverse osmosis concentrate in the petrochemical industrypt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001094105pt_BR
dc.type.originEstrangeiropt_BR


Files in this item

Thumbnail
   

This item is licensed under a Creative Commons License

Show simple item record