Abstract
Organophosphate compounds, which are essential ingredients of pesticide, plasticizer, air fuel, and chemical warfare agents, are serious neurotoxic hazardous materials. Therefore, diverse physical-chemical treatments have been attempted to degrade organophosphate compounds. In the present work, we propose a two-stage chemical and enzymatic treatment system. As a first stage, pretreatment of oxidation and coagulation using Fenton’s reagent utilizing iron and hydrogen peroxide was employed. Preferentially, 1 mM ethyl parathion (EP) pesticide was largely (∼80%) removed by Fenton’s reagent reaction within 15 min. To remove residual EP, enzymatic treatment with organophosphorous hydrolase (OPH) from recombinant Escherichia coli was employed as a second stage. We successfully demonstrated that the proposed two-stage hybrid treatment process removed 1mM environmental toxic EP efficiently (∼98%) within 30 min.
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Choi, S.S., Seo, S.H., Kang, D.G. et al. Removal of neurotoxic ethyl parathion pesticide by two-stage chemical/enzymatic treatment system using Fenton’s reagent and organophosphorous hydrolase. Korean J. Chem. Eng. 27, 900–904 (2010). https://doi.org/10.1007/s11814-010-0115-9
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DOI: https://doi.org/10.1007/s11814-010-0115-9