摘要
采用高铁酸钾氧化降解硝基苯水溶液,研究表明,反应时间、pH值、高铁酸钾投加量、硝基苯水溶液浓度4个因素都会对硝基苯的降解效果产生影响.硝基苯水溶液浓度为55mg.l-1时,初始pH=7—9,高铁酸钾投加量nk2FeO4:nC6H5NO2=10:1,反应时间30min为最优反应条件,硝基苯去除率达到85%左右,CODCr去除率达到55%左右.通过对反应产物的分析,推测硝基苯首先被高铁酸钾氧化为对硝基苯酚,再进一步被氧化开环生成终产物.
Potassium ferrate （Ⅵ）was employed in the degradation of nitrobenzene solution. The degradation efficiency of nitrobenzene was determined by pH, reaction time, KEFeO4 dose and concentration of nitrobenzene solution. For 55mg ·l^-1 nitrobenzene solution, the optimal conditions of reaction were pH 7---9, K2FeOa/nitrobenzene 10： 1, and 30 min reaction time. The removal of nitrobenzene was 85% and CODcr was reduced by 55%. The analysis of reaction products indicated that nitrobenzene was initially oxidized to p-nitrophenol and then underwent ring cleavage to aliphatic compounds.
出处
《环境化学》
CAS
CSCD
北大核心
2009年第6期813-817,共5页
Environmental Chemistry
基金
上海市重点学科建设(B604)资助项目
关键词
高铁酸钾
硝基苯
降解
potassium ferrate（Ⅵ）
nitrobenzene
degradation
