高铁酸钾和次氯酸钠联用降解四溴双酚A的研究  

Study on the degradation of tetrabromobisphenol A using potassium ferrate combined with sodium hypochlorite

作　　者：肖磊[1] 龚启迪 金士威[2] 欧阳怡德 平成君 刘旦[1] 

机构地区：[1]武汉工程大学化工与制药学院,绿色化工过程教育部重点实验室,湖北武汉430073 [2]中南民族大学化学与材料科学学院,湖北武汉430074

出　　处：《环境污染与防治》2015年第12期20-23,28,共5页Environmental Pollution & Control

基　　金：国家自然科学基金资助重点项目(No.21037004);湖北省自然科学基金资助项目(No.2014CFB774);湖北省新型反应器与绿色化学工艺重点实验室开放基金资助项目(No.RGCT201303);武汉工程大学研究生教育创新基金资助项目(No.CX2013012)

摘　　要：研究了高铁酸钾(K_2FeO_4)与次氯酸钠(NaClO)联用对四溴双酚A(TBBPA)的降解效果,考察了pH、反应时间、K_2FeO_4初始浓度对TBBPA降解率的影响,并探讨了NaClO浓度在K_2FeO_4与NaClO联用时对TBBPA降解率的影响。结果表明,在pH=9,K_2FeO_4与TBBPA的初始浓度比为3.0∶1.0,反应时间为6 min时,K_2FeO_4对TBBPA有较好的降解效果,降解率为89.2%。在初始条件不变的情况下,加入8mg/L的NaClO后,TBBPA的降解率可达97.1%,与单独使用K_2FeO_4相比,TBBPA的降解率有较大提升。K_2FeO_4及K_2FeO_4-NaClO联用降解TBBPA的反应符合准一级动力学模型,其速率常数(k)分别为0.006 7、0.007 7s^(-1),其相关系数(R2)分别为0.979 6、0.983 9。The degradation of tetrabromobisphenol A （TBBPA） was studied using potassium ferrate （K2FeO4 ） and K2FeO4 combined with sodium hypoehlorite （NaC10）. The effects of pH, reaction time and K2FeO4 dosage on degradation rate of TBBPA were discussed. In addition, the effects of NaClO dosage on degradation of TBBPA by K2FeO4 combined with NaClO were researched. The results showed that the degradation rate was 89.2 % under the conditions：pH=9,initial mass concentration ratio of 3.0 ： 1.0 （K2FeO4 ： TBBPA）, reaction time of 6 rain. In the initial conditions,the degradation rate of TBBPA reached 97.1% after 8 mg/L NaClO added. Compared with using K2FeO4 alone,the degradation rate of TBBPA was greatly improved.The degradation reaction of TBBPA obeyed the pseudo first order kinetics model using K2FeO4 and K2 FeO4 combined with NaClO. Their rate constants （k） were 0.006 7 s^-1 （R^2 =0.979 6） and 0.007 7 s^-1 （R^2 =0.9839） ,respectively.

关 键 词：高铁酸钾 次氯酸钠 四溴双酚A 降解 

分 类 号：TQ243.3[化学工程—有机化工] X505[环境科学与工程—环境工程]