Processo oxidativo avançado (UV/H2O2) como alternativa de pré-tratamento de efluente contaminado pelo agrotóxico clorpirifós.

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dc.contributorPriscilla Veiga Bernardelli, Universidade Federal de Santa Catarina; Paulo Magro, Universidade Federal de Santa Catarina; Maria Eliza Nagel-Hassmer, Universidade Federal de Santa Catarina; LUCIANO GEBLER, CNPUV.
dc.creatorBERNARDELLI, P. V.
dc.creatorMAGRO, P.
dc.creatorNAGEL-HASSMER, M. E.
dc.creatorGEBLER, L.
dc.date2018-12-23T23:36:11Z
dc.date2018-12-23T23:36:11Z
dc.date2018-12-20
dc.date2018
dc.date2018-12-23T23:36:11Z
dc.date.accessioned2026-07-07T11:25:52Z
dc.descriptionBrazil has become the world?s top pesticide consumer since 2008. This high consumption rate could lead to serious environmental, sanitary and social risks. Given this, mitigating practices play a fundamental role to reduce the impact caused by pesticide use. Among these, a bioreactor known as Biobed stands out. However, some specific pesticides interfere negatively on that reactor, consequently diminishing its efficiency. In this context, the Advanced Oxidation Process UV/H2O2 proves to be an interesting pretreatment alternative, as it has shown to be effective for different pesticides degradation. The aim of this study was to evaluate UV/H2O2 technology as a chlorpyrifos pretreatment, in order to determine the pre-oxidation conditions. The photodegradation was carried out in an annular reactor, with a high pressure UV lamp. Tests were performed with the initial H2O2 concentration varying from 600 to 2000 mg/L and reaction time from 15 to 80 minutes, while the lamp was powered both with 80 and 125W. The best result was obtained using 125W, H2O2 concentration of 1750 mg/L and 80 minutes of pre-oxidation, providing a 31.5% removal. These results show that UV/H2O2 technology is efficient as a pretreatment technique, resulting in a less concentrated and toxic effluent, so it could be further degraded by bioreactors. Palavras-chave: Pré-tratamento, UV/H2O2 , Biobed
dc.identifierIn:CONGRESSO INTERAMERICANO DE INGENIERÍA SANITARIA Y AMBIENTAL, 26., 2018. Libros de Trabajos Técnicos: Posters...Guayaquil, Ecuador: AIDIS, 28 a 31 Oct. 2018. [00230].
dc.identifierhttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1102336
dc.identifier.urihttp://hdl.handle.net/123456789/507557
dc.languageeng
dc.rightsopenAccess
dc.subjectPré-tratamento
dc.subjectUV/H2O2
dc.subjectBiobed
dc.titleProcesso oxidativo avançado (UV/H2O2) como alternativa de pré-tratamento de efluente contaminado pelo agrotóxico clorpirifós.
dc.typeArtigo em anais e proceedings

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