摘要
采用过硫酸氢钾（Oxone试剂）催化氧化降解水中微污染物磺胺甲噁唑。探究了磺胺甲噁唑初始浓度、溶液pH、反应温度、Oxone试剂用量、反应时间及水中有机物腐殖酸等对磺胺甲噁唑降解效果的影响,结合液相色谱质谱（LC-MS）分析阐明了磺胺甲噁唑的降解路径。结果表明：磺胺甲噁唑溶液初始质量浓度为15 mg/L、溶液pH 9.3、反应温度为30℃、Oxone试剂用量为3.0 mmol、SRHA的浓度为10 mg/L、且紫外灯辐照下,反应3 h后,磺胺甲噁唑的降解率达到了95.9%。
The oxidative degradation of sulfamethoxazole by oxone/UV in aqueous solutions was investigated in this work.The influencing factors on sulfamethoxazole degradation,including the initial concentration of sulfamethoxazole,solution pH,oxone dosage,temperature and humic acid,were discussed.The degradation path of sulfamethoxazole was also discussed.The degradation efficiency of sulfamethoxazole could reach 95. 9% under conditions that the initial concentration of sulfamethoxazole was 15 mg/L,p H value was 9. 3,the dose of oxone was 3. 0 mmol,the concentration of humic acid（SRHA） was 10 mg/L,the reaction temperature was 30 ℃,the reaction time was 3 h,and with the ultraviolet irradiation.
作者
李晓静
郑宾国
姜灵彦
张旭升
LI Xiao-jing;ZHENG Bin-guo;JIANG Ling-yan;ZHANG Xu-sheng(School of Chemical Engineering and Food Science,Zhengzhou Institute of Technology,Zhengzhou 450044,China;Zhengzhou Key Laboratory of Environmental Functional Materials,School of Civil Engineering,Zhengzhou University of Aeronautics,Zhengzhou 450015,China)
出处
《化学试剂》
CAS
北大核心
2018年第10期988-992,共5页
Chemical Reagents
基金
国家自然科学基金资助项目(51409291)
河南省科技攻关计划项目(182102110124)
河南省高校青年骨干教师资助计划项目(2015GGJS-174)
国家级大学生创新训练计划项目(201710485018)
