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高铁酸钾氧化降解硝基苯水溶液
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n_(k_2FeO_4):n_(C_6H_5NO_2)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,COD_(Cr)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. Abstract： Potassium ferrate (Ⅵ)was employed in the degradation of nitrobenzene solution. The degradation efficiency of nitrobenzene was determined by pH, reaction time, K_2FeO_4 dose and concentration of nitrobenzene solution. For 55mg ·l~(-1) nitrobenzene solution, the optimal conditions of reaction were pH 7-9, K_2FeO_4/nitrobenzene 10: 1, and 30 min reaction time. The removal of nitrobenzene was 85% and COD_(Cr) 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. 作 者： 吴小倩 董娟 汪永辉 WU Xiao-qian DONG Juan WANG Yong-hui 作者单位： 东华大学环境科学与工程学院,上海,200051 期 刊： 环境化学 ISTICPKU Journal： ENVIRONMENTAL CHEMISTRY 年，卷(期)： 2009, 28(6) 分类号： X13 关键词： 高铁酸钾 硝基苯 降解. Keywords： potassium ferrate(Ⅵ) nitrobenzene degradation.【高铁酸钾氧化降解硝基苯水溶液】相关文章：
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