| 酸性染料的臭氧降解与中间产物 |
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| 引用本文： | 龚宜,罗汉金,韦朝海.酸性染料的臭氧降解与中间产物[J].环境化学,2009,28(3). |
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| 作者姓名： | 龚宜 罗汉金 韦朝海 |
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| 作者单位： | 华南理工大学环境科学与工程学院,广州,510006 |
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| 摘 要： | 以酸性金黄G模拟染料废水为研究对象,观察臭氧氧化过程中染料溶液吸光度和TOC的变化,利用离子色谱仪、红外光谱仪和GC/MS对染料的降解过程进行了分析,并用发光细菌法检测了溶液急性毒性的变化,结果表明,臭氧对染料的降解符合一级反应动力学,反应40 min后染料溶液的脱色率达到99.3%,TOC去除率为35.7%;染料分子中的S有97.8%被转化为SO2-4,分子中的仲胺基部分转化成酰胺基,水解后生成NH+4,最终氧化成NO-3,溶液中有草酸产生;溶液在臭氧化前期由于生成了醛类和酚类物质,使急性毒性首先呈上升趋势,25min后随着氧化的深入,溶液毒性开始逐渐下降,
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| 关 键 词： | 酸性染料 臭氧氧化 脱色 毒性. |
OZONATION MECHANISM AND INTERMEDIATES OF ACID YELLOW 36 |
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| GONG Yi,LUO Han-jin,WEI Chao-hai.OZONATION MECHANISM AND INTERMEDIATES OF ACID YELLOW 36[J].Environmental Chemistry,2009,28(3). |
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| Authors: | GONG Yi LUO Han-jin WEI Chao-hai |
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| Institution: | College of Environmental Science and Engineering;South China University of Technology;Guangzhou;510006;China |
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| Abstract: | The degradation of acid yellow 36 was investigated by using ozone. The changes of absorbance and TOC of dye solution were detected during the process. The ozonation mechanism of dye was analyzed by using ion chromatography, infrared spectrometer and GC/MS. Finally, the acute toxicity of dye solution was measured by using the method of luminescent bacteria. The results showed that the decolorization of dye followed the first-order kinetics. Decolorization efficiency exceeded 99.3% in 40 min during ozonation.... |
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| Keywords: | acid dye ozonation decolorization toxicity |
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