Removal of neurotoxic ethyl parathion pesticide by two-stage chemical/enzymatic treatment system using Fenton's reagent and organophosphorous hydrolase
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- Title
- Removal of neurotoxic ethyl parathion pesticide by two-stage chemical/enzymatic treatment system using Fenton's reagent and organophosphorous hydrolase
- Authors
- Choi, SS; Seo, SH; Kang, DG; Ha, JH; Cha, HJ
- Date Issued
- 2010-05
- Publisher
- SPRINGER
- 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 (similar to 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 (similar to 98%) within 30 min.
- Keywords
- Organophosphate Compound; Ethyl Parathion Pesticide; Two-stage Treatment; Fenton' s Reagent; Organophosphorous Hydrolase; RECOMBINANT ESCHERICHIA-COLI; WASTE-WATER; DEGRADATION; PHOSPHOTRIESTERASE; DETOXIFICATION; OXIDATION; ENZYMES; PROTEIN; DOMAIN; GENE
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/25353
- DOI
- 10.1007/S11814-010-0115-9
- ISSN
- 0256-1115
- Article Type
- Article
- Citation
- KOREAN JOURNAL OF CHEMICAL ENGINEERING, vol. 27, no. 3, page. 900 - 904, 2010-05
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