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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Application of oxidative process to degrade paraquat present in the commercial herbicide

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Autor(es):
Tadayozzi, Yasmin Saegusa [1] ; Santos, Felipe Andre dos [1] ; Vicente, Eduardo Festozo [1] ; Forti, Juliane Cristina [1]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Sao Paulo State Univ UNESP, Biosyst Engn Dept, Sch Sci & Engn, Domingos da Costa Lopes 780, BR-17602496 Tupa, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART B-PESTICIDES FOOD CONTAMIN; JUN 2021.
Citações Web of Science: 0
Resumo

Paraquat is resistant to degradation by conventional treatments, being necessary to use treatments with greater effectiveness, such as advanced oxidative processes. In this work, different advanced oxidative processes were applied (Fenton, electro-Fenton, photoelectro-oxidation and photoelectro-Fenton) employing oxide electrodes to degrade Gramoxone, a commercial herbicide that contains paraquat in its composition. The degradation and formation of by-products were accompanied by high performance liquid chromatography, total organic carbon (TOC) and chemical oxygen demand (COD). The results showed that the photoelectro-Fenton process was the most efficient due to the synergistic effect, reaching 79% degradation of the initial compound and 82% and 71% removal of TOC and COD, respectively. After the application of the electro-Fenton and photoelectro-Fenton oxidation processes, short-chain carboxylic acids such as succinic acid, oxalic acid, acetic acid and formic acid were identified as by-products of the oxidation of Gramoxone. The results were satisfactory and deserve to be highlighted, as a commercial formulation was used, making the scenario more realistic. (AU)

Processo FAPESP: 16/00446-7 - Aplicação de peptídeos antimicrobianos como novos aditivos na nutrição animal
Beneficiário:Eduardo Festozo Vicente
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores
Processo FAPESP: 16/22115-2 - Tratamento de águas residuárias agroindustriais usando processos eletroquímicos oxidativos avançados
Beneficiário:Juliane Cristina Forti
Linha de fomento: Auxílio à Pesquisa - Regular