TAILIEUCHUNG - Oxidation of diazinon by Homogeneous Fenton process

The degradation of aqueous diazinon from an aqueous solution using H2O2/Fe2+ process is performed in a 1L batch chemical reactor. The extent of diazinon degradation (20 mg/L) has been investigated from a known initial pH solution, temperature and catalyst type (Fe2+, Fe3+) and for various initial concentrations of diazinon, H2O2 and Fe2+. | _ TRƯỜNG ĐẠI HỌC SƯ PHẠM TP HỒ CHÍ MINH HO CHI MINH CITY UNIVERSITY OF EDUCATION TẠP CHÍ KHOA HỌC JOURNAL OF SCIENCE ISSN khoa học tự nhiên và công nghệ natural SCIENCES AND TECHNOLOGY 1859-3100 Tập 16 Số 3 2019 5-16 Vol. 16 No. 3 2019 5-16 Email tapchikhoahoc@hcmue. edu. vn Website http tckh. hcmue. edu. vn OXIDATION OF DIAZINON BY HOMOGENEOUS FENTON PROCESS Bui Manh Ha Saigon University Corresponding author BuiManh Ha Email manhhakg@ Received 13 12 2018 Revised 26 12 2018 Accepted 21 3 2019 ABSTRACT The degradation of aqueous diazinon from an aqueous solution using H2O2 Fe2 process is performed in a 1L batch chemical reactor. The extent of diazinon degradation 20 mg L has been investigated from a known initial pH solution temperature and catalyst type Fe2 Fe3 and for various initial concentrations of diazinon H2O2 and Fe2 . The degradation efficiency was obtained and at pH 3 and 4 of the initial solution respectively while catalyst type and reaction temperature have a slight impact on the final degradation of diazinon. Efficiency of diazinon removal can be enhanced by increasing initial H2O2 concentration in the range of 70 to 150 mg L and initial Fe2 concentration in the range of 2 to 5 mg L. The highest degradation efficiency obtained was at initial diazinon concentration of 10 mg L H2O2 150 mg L and Fe2 5 mg L. This study proved that Fenton process can be used for pretreatment of pesticide wastewater contaminated by diazinon before a biological treatment. Keywords diazinon homogeneous Fenton oxidation. 1. Introduction Agriculture is critical to the economy of Vietnam in which export-oriented agricultural production is a significant source of foreign exchange earnings. The agricultural sector provides approximately 16 of the gross national product Laiprakobsup Chorkaew 2018 . Therefore the production and consumption of pesticide products have drastically increased due to the considerable usage of pesticide products Van Toan Sebesvari

• Hoá học
• Homogeneous Fenton
• Diazinon degradation
• Biological treatment
• Chemical oxygen demand
• Total suspended solids
• New homogeneous photo Fenton catalytic systems
• Photo Fenton catalytic systems using oxalic acid
• Photo Fenton catalytic
• Homogeneous photo Fenton activity
• Very low concentrations
• Journal of Chemistry
• Acid red 14
• Desirability function
• Fenton reaction
• Response surface methodology
• Rhodamine B
• Establishing an empirical equation
• Relationship between total suspended solids
• Total phosphorus concentrations
• Establishing the empirical equation expressing
• Rainwater harvesting
• Mesh filter
• Automatic valve
• Roof water harvesting