Microwave-assisted photo-Fenton decomposition of chlorfenvinphos and cypermethrin in residual water |
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| Institution: | 1. Grupo de Análise Instrumental Aplicada, Embrapa Pecuária Sudeste, P.O. Box 339, 13560-970, São Carlos, SP, Brazil;2. Departamento de Química, Universidade Federal de São Carlos, São Carlos, SP, Brazil;3. Departamento de Ciências Exatas – Química, Universidade de São Paulo, Escola Superior de Agricultura “Luiz de Queiroz”, Piracicaba, SP, Brazil |
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| Abstract: | The coupling of microwave radiation with photo-Fenton reaction for wastewater treatment was evaluated. This strategy was performed in a focused microwave digestion oven with open vessels. Ultraviolet radiation was obtained from microwave lamps (MWL) activated by microwave radiation. The operational conditions were established considering the extent of degradation of chlorfenviphos and cypermethrin used for bovine ticks (Boophilus michoplus) control. The results were based on residual carbon content, always comparing the procedures in the presence or absence of UV radiation. The combination of MWL and Fenton reaction degraded pesticide residues efficiently (>98%) in about 4 min. |
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