摘要
采用分光光度法研究Fenton、UV/Fenton和UV/Fe(C2O4)33-/H2O2系统中羟自由基(.OH)的生成规律.结果表明:3个系统生成的.OH浓度顺序均为UV/Fe(C2O4)33-/H2O2>UV/Fenton>Fenton.对于UV/Fe(C2O4)33-/H2O2系统,最佳K2C2O4浓度为1 mmol/L,最佳初始pH范围和H2O2浓度分别为2-5和20 mmol/L,增加Fe2+浓度和升高反应温度有助于UV/Fe(C2O4)33-/H2O2系统生成.OH.
The generating rule of hydroxyl radical of Fenton, UV/Fenton and UV/Fe（ C2O4 ）3^3-/H2O2 system was investigated by using spectrophotometric method. The experimental results indicated： The generating sequences of hydroxyl radical were UV/Fe（ C2O4 ） 3^3-/H2O2 〉 UV/Fenton 〉 Fenton. The optimum K2C2O4concentration and pH ranges were 1 mmol/L and 2 -5 in UV/Fe（ C2O4 ）3^3-/H2O2 system. When H2O2 concentration reached 20 mmol/L, the generating quantity of hydroxyl radical was the biggest. The concentration of hydroxyl radical in UV/Fe （C2O4 ）3^3-/H2O2 system increased with the increasing of Fe^2＋ concentration and reaction temperature.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2007年第2期255-257,共3页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(50178022)
关键词
高级氧化技术
羟自由基
甲基亚磺酸
分光光度法
advanced oxidation technology
hydroxyl radical
methane sulfinic acid
spectrophotometry
