热激活过硫酸盐氧化降解水中双酚A  

Degradation of bisphenol A in aqueous solution by thermally activated sulfate oxidation

作　　者：朱思瑞 高乃云[1] 鲁仙 郭佑罗 ZHU Si-rui;GAO Nai-yun;LU Xian;GUO You-luo(State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China)

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《中国环境科学》2017年第1期188-194,共7页China Environmental Science

基　　金：国家自然科学基金项目(51178321);科技部国家重大项目(2012ZX07403-001;2012ZX07403-002;2008ZX07421-002);高等教育博士专业研究基金(20120072110050)

摘　　要：应用热激活过硫酸盐降解水中双酚A(BPA)并分析初始底物浓度、过硫酸盐投加量、温度、初始pH以及常见的过渡金属物质(Ni_2O_3、Fe^0、Fe^(2+))对降解效果的影响.结果表明:热激活过硫酸盐降解双酚A符合拟一级反应动力学(R^2>0.96)和符合阿伦尼乌斯模型(R^2>0.95);表观速率常数k_(obs)与初始底物浓度呈负相关,与过硫酸盐投加量、温度、初始pH呈正相关,计算出的反应活化能为146.64kJ/mol;过渡金属物质的投加可以大幅促进双酚A的降解,[Fe^x]_0(Fe^(2+)、Fe^0):[PS]_0=1:2时,降解效果最佳.Thermally activated sulfate was applied to degrade aqueous bisphenol A(BPA)and how some factors affectsdegradation was investigated,such as substrate concentration,sulfate dosage,applied temperature,initial pH andcoexistence of transition metal(Ni2O3、Fe0、Fe2+).Results showed that BPA degradation conformed to pseudo first orderreaction kinetics(R2>0.96)and Arrhenius model(R2>0.95)by thermally activated sulfate treatment.Besides,apparentrate constant kobs was negatively related to initial substrate concentration and in positive correlation with sulfate dosage,applied temperature and initial pH.Also,the reaction activation energy Ea was calculated to be146.64kJ/mol.Furthermore,adding transition metals exhibited significant enhancement for BPA degradation and optimal ratio was determined as[Fex]0(Fe2+,Fe0):[PS]0=1:2.

关 键 词：双酚A 过硫酸盐 热激活 动力学 表观速率常数 

分 类 号：X524[环境科学与工程—环境工程]