CAJ | 학술논문

探讨了Fenton试剂对超高效除草剂溴嘧草醚( ZJ0777)的降解反应。考察了溴嘧草醚、过氧化氢、硫酸亚铁的初始浓度和反应温度等因素对溴嘧草醚降解反应的影响，建立了Fenton试剂降解溴嘧草醚的动力学方程。结果表明：在溴嘧草醚初始浓度分别为0.12和0.24 mmol/L时，达到其降解率90％以上所需的时间分别为32和48 h，而在溴嘧草醚为0.48 mmol/L时，反应84 h只有87％的溴嘧草醚降解；过氧化氢初始浓度在150~300 mmol/L范围内，浓度增加有利于降解反应进行；溴嘧草醚降解反应随亚铁离子浓度的增加而加快(5~20 mmol/L )，但过高的亚铁离子浓度对降解反应无效。温度在25~45℃范围内，反应的表观活化能Ea为75.34 kJ/mol。溴嘧草醚的氧化降解符合假一级反应动力学模型。
탐토료Fenton시제대초고효제초제추밀초미( ZJ0777)적강해반응。고찰료추밀초미、과양화경、류산아철적초시농도화반응온도등인소대추밀초미강해반응적영향，건립료Fenton시제강해추밀초미적동역학방정。결과표명：재추밀초미초시농도분별위0.12화0.24 mmol/L시，체도기강해솔90％이상소수적시간분별위32화48 h，이재추밀초미위0.48 mmol/L시，반응84 h지유87％적추밀초미강해；과양화경초시농도재150~300 mmol/L범위내，농도증가유리우강해반응진행；추밀초미강해반응수아철리자농도적증가이가쾌(5~20 mmol/L )，단과고적아철리자농도대강해반응무효。온도재25~45℃범위내，반응적표관활화능Ea위75.34 kJ/mol。추밀초미적양화강해부합가일급반응동역학모형。
To establish an efficient oxidation process for ZJ0777 degradation, the effects of operating parameters such as initial concentrations of ZJ0777, H2 O2 and FeSO4??7H2 O were examined during treatment with Fenton reagent. Firstly, the effect of initial ZJ0777 concentration was tested between 0. 12 mmol/L and 0. 48 mmol/L. More than 90% of ZJ0777 was degraded after 32 h with an initial concentration of 0. 12 mmol/L and in 48 h with an initial concentration of 0. 24 mmol/L. At an initial concentration of 0. 48 mmol/L, only 87% conversion of ZJ0777 could be obtained in 84 h. And the influence of initial amount of H2 O2 between 150 and 300 mmol/L was analyzed. The effective degradation of ZJ0777 was reached. The degradation rate was found to increase with increasing dosages of H2 O2 . Further, the effect of initial FeSO4??7H2 O concentrations on the homogeneous degradation of ZJ0777 was also investigated. The increase of Fe2+ doses accelerated the degradation of ZJ0777 in the range of 5 -20 mmol/L. Addition of Fe2+ became inefficient and unnecessary. Kinetic analysis indicated that ZJ0777 degradation by the homogeneous Fenton reaction could be described by a pseudo-first-order reaction model and the apparent activation energy was 75. 34 kJ/mol.