Fe(Ⅱ)活化O_2高级氧化降解罗丹明B染料  

Study on degradation of rhodamine B by advanced oxidation based on O_2 activation by Fe(Ⅱ)

作　　者：张成武[1,2] 李天一[1,2] 廉静茹[1,2] 郭超 秦传玉[1,2] ZHANG Cheng-Wu;LI Tian-Yi;LIAN Jing-RU;GUO Chao;QIN Chuan-Yu(Key Laboratory of Groundwater Resources and Environment ministry of Education,Jilin University,Changchun 130021,China;College of Environment and Resources,Jilin University,Changchun 130021,China)

机构地区：[1]吉林大学地下水资源与环境教育部重点实验室,吉林长春130021 [2]吉林大学环境与资源学院,吉林长春130021

出　　处：《中国环境科学》2018年第2期560-565,共6页China Environmental Science

基　　金：国家自然科学基金资助项目(41572213);吉林省科技厅青年基金资助项目(20160520079JH);国家留学基金资助项目(201706175001)

摘　　要：基于传统Fenton体系中H_2O_2利用率低,修复费用高,对环境副作用大的缺点,通过向溶液中投加三聚磷酸钠(STPP),形成Fe(II)-STPP配合物,氧气替代H_2O_2作为氧化剂,构建Fe(II)/O_2/STPP的新型高级氧化体系,研究了该反应体系对模拟罗丹明B染料废水的降解性能.结果表明该体系对于罗丹明B具有良好的降解效果,并且在较广泛p H值(5-9)条件下罗丹明B降解率均在70%以上,废水中常见金属阳离子对降解效果基本没有影响.通过自由基掩蔽实验证明体系中对罗丹明B起降解作用的主要是·OH.该新型高级氧化体系更加绿色、可持续,在难降解染料等废水的处理中具有广泛的应用前景.Traditional Fenton system has the disadvantages of low H2O2 utilization efficiency,high remediation cost and great environmental side effect.A new type of advanced oxidation system Fe(II)/O2/sodium tripolyphosphate(STPP)was proposed to ease these disadvantages.Oxygen gas was used,as the oxidant to replace H2O2.STPP,an inorganic ligand,has the ability to form complexation with Fe(II),which could greatly activates O2 to form reactive oxygen species.This studyinvestigated the degradation rhodamine B decreased by>70%at pH between 5~9.No remarkable effect was observed on the degradation of rhodamine B by common metal ions.The results of scavenger experiments show that?OH was the main reactive oxygen species for contaminant degradation.This new reaction system is more green sustainable,and has a wide application prospect in refractory wastewater treatment.

关 键 词：三聚磷酸钠(STPP) 氧气 高级氧化 绿色可持续 

分 类 号：X52[环境科学与工程—环境工程]