高鐵酸鉀氧化降解硝基苯水溶液

摘要： 采用高鐵酸鉀氧化降解硝基苯水溶液,研究表明,反應(yīng)時(shí)間、pH值、高鐵酸鉀投加量、硝基苯水溶液濃度4個(gè)因素都會(huì)對硝基苯的降解效果產(chǎn)生影響.硝基苯水溶液濃度為55mg·l~(-1)時(shí),初始pH=7-9,高鐵酸鉀投加量n_(k_2FeO_4):n_(C_6H_5NO_2)10:1,反應(yīng)時(shí)間30min為最優(yōu)反應(yīng)條件,硝基苯去除率達(dá)到85%左右,COD_(Cr)去除率達(dá)到55%左右.通過對反應(yīng)產(chǎn)物的分析,推測硝基苯首先被高鐵酸鉀氧化為對硝基苯酚,再進(jìn)一步被氧化開環(huán)生成終產(chǎn)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： 吳小倩    董娟    汪永輝    WU Xiao-qian    DONG Juan    WANG Yong-hui   作者單位： 東華大學(xué)環(huán)境科學(xué)與工程學(xué)院,上海,200051  期 刊： 環(huán)境化學(xué)  ISTICPKU   Journal： ENVIRONMENTAL CHEMISTRY  年，卷(期)： 2009, 28(6)  分類號： X13  關(guān)鍵詞： 高鐵酸鉀    硝基苯    降解.    Keywords： potassium ferrate(Ⅵ)    nitrobenzene    degradation.   

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