纳米双金属铁对阻燃剂四溴双酚A的降解效果的研究  

Degradation of Flame Retardant Tetrabromobisphenol A by Nano-Bimetallic Iron

作　　者：李硕[1] 马长文[1] 陈胜文[1] LI Shuo;MA Changwen;CHEN Shengwen(School of Environmental and Materials Engineering, Shanghai Polytechnic University,Shanghai 201209, P. R. China)

机构地区：[1]上海第二工业大学环境与材料工程学院,上海201209

出　　处：《上海第二工业大学学报》2016年第4期259-266,共8页Journal of Shanghai Polytechnic University

基　　金：上海第二工业大学培育学科建设项目(No.XXKPY1601);上海电子废弃物资源化产学研合作开发中心开放;开发基金资助

摘　　要：研究了纳米双金属铁对阻燃剂四溴双酚A(TBBPA)的降解效果,对不同负载金属、溶液pH、TBBPA初始浓度、负载量以及投加量等影响因素进行了研究。结果表明:纳米双金属铁相对于纳米铁具有更高的活性,能够更加有效地降解TBBPA,通过不同负载金属Ni、Cu以及Ag的降解TBBPA表明,nZVI/Ag降解体系效果最佳。在25?C、pH=7的条件下,1 g/L的负载率w=0.5%的nZVI/Ag对初始浓度为5 mg/L的TBBPA的降解效果最佳。nZVI/Ag降解TBBPA的反应符合假一级动力学方程。TBBPA的降解速率常数随着pH和TBBPA初始浓度的增加而降低,随着nZVI/Ag投加量以及Ag负载率的增加而升高。Nano zero valent iron (nZVI) and bimetallic nZVI on the degradation of flame retardant tetrabromobisphenol A (TBBPA) wereexplored. The effects of different loads, pH, initial concentrations of TBBPA loading rates and dosage were investigated. The resultsshowed that the bimetallic nZVI had higher activity than bare nZVI. Through degradation TBBPA experiments of different load metals(Ni, Cu or Ag) on nZVI, nZVI/Ag was proved the best. T = 25 ±C, pH=7, dosage of nZVI/Ag=1 g/L, w(Ag)=0.5%, was optimumconditions for TBBPA removal of initial concentration of 5 mg/L. The reaction of nZVI/Ag degradation with TBBPA conformed to thepseudo first order kinetic equation. The degradation rate constant of TBBPA decreased with the increasing of the initial concentration ofTBBPA and pH and increased with the increasing of nZVI/Ag dosage and Ag loading rate.

关 键 词：纳米零价铁 纳米铁银双金属 四溴双酚A 还原脱溴 

分 类 号：X505[环境科学与工程—环境工程]