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Diazinon degradation in water applying glow discharge plasma technology

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Abstract

Pesticides are chemical compounds widely used in crop pest control, ensuring high productivity and product quality control. However, pesticides are toxic and can be bioaccumulative. Their excessive use causes environmental and health impacts. In this study, the potential of glow discharge plasma to degrade diazinon present in water was investigated. For the degradation process, a glow discharge plasma (GDP) system was used to process diazinon at several plasma flow rates (10, 20, and 30 mL/min) and exposure times (10, 20, and 30 min). The degradation levels and the identification of the by-products were analyzed by gas chromatography coupled to mass spectrum (GC-MS). GDP processing efficiently degraded diazinon, reaching a maximum potential degradation of 8.19 ± 0.92 mg/L, sufficient to bring diazinon-contaminated waters to safe levels. Two parallel degradation routes were proposed for diazinon degradation by cold plasma.

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Data is available upon request. Materials were properly discarded after analysis and are not available.

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Funding

This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES).

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FERJ investigation, formal analysis, writing—original draft. FANF conceptualization, supervision, resources, writing—review & editing.

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Correspondence to Fabiano A. N. Fernandes.

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The authors have no relevant financial or non-financial interests to disclose.

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Rodrigues, F.E., Fernandes, F.A.N. Diazinon degradation in water applying glow discharge plasma technology. Braz. J. Chem. Eng. (2024). https://doi.org/10.1007/s43153-023-00427-7

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  • DOI: https://doi.org/10.1007/s43153-023-00427-7

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