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Type: Artigo
Title: Photocatalytic Degradation Of An Organophosphorus Pesticide From Agricultural Waste By Immobilized Tio2 Under Solar Radiation
Title Alternative: Degradação Fotocatalítica De Pesticida Organofosforado De Efluente Agrícola Por Tio2 Imobilizado Sob Radiação Solar
Author: Assalin
Marcia Regina; Ferracini
Vera Lucia; Queiroz
Sonia Claudia Nascimento; Jonsson
Cláudio Martin; Clemente
Zaira; Silva
Simone Raquel C. M.
Abstract: This paper describes solar heterogeneous photocatalysis using immobilized TiO2 applied in the treatment of agricultural waste resulting from the application of commercial formulations of methyl parathion. The disappearance of the insecticide, as well as the formation of its metabolite, was monitored by high-performance liquid chromatography-tandem mass spectrometry (LC-MS/MS), while mineralization efficiency was monitored by measurements of total organic carbon (TOC). Toxicity studies were performed using the microcrustacean Artemia salina. The TOC removal efficiency by photocatalytic process was 48.5%. After 45 minutes of treatment, the removal efficiency of methyl parathion was 90%, being completely mineralized at the end of treatment. The formation and removal of the metabolite methyl paraoxon was observed during the photocatalytic process. The photocatalytic treatment resulted in increased microcrustacean mobility, indicating a reduction of acute toxicity.
Subject: Methyl Parathion
Solar Photocatalysis
Fotocatálise Solar
Metil Paration
Editor: Instituto de Pesquisas Ambientais em Bacias Hidrográficas
Citation: Revista Ambiente & Água. Instituto De Pesquisas Ambientais Em Bacias Hidrográficas, v. 11, n. 4, p. 778 - 787
Rights: aberto
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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