| 活性嫩黄染料废水的臭氧降解研究 |
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| 引用本文： | 龚宜,罗汉金,韦朝海. 活性嫩黄染料废水的臭氧降解研究[J]. 环境科学与技术, 2009, 32(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,广东,广州,510006;华南理工大学环境科学与工程学院,广东,广州,510006;华南理工大学环境科学与工程学院,广东,广州,510006 |
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| 基金项目： | 国家自然科学基金,教育部留学归国人员项目 |
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| 摘 要： | 以活性嫩黄X-7G模拟染料废水为研究对象,观察了臭氧氧化过程中染料溶液的pH、电导以及吸光度的变化,利用离子色谱仪对染料溶液中Cl-、SO42-、NO3-和NH4+的生成过程进行了分析。结果表明臭氧对染料的降解符合一级反应动力学,20min内对染料的脱色率达96.7%以上,染料分子中的Cl和S在反应40min后分别有97.2%和73.5%被氧化为Cl-、SO42-,偶氮键被臭氧化为N2,-NH2部分质子化形成NH4+,新生成的NO3-来源于NH4+和其他含N基团的氧化。
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| 关 键 词： | 活性染料 臭氧化 脱色 降解 |
Mechanism of Degradation of Reactive Light Yellow X-7G by Ozonation |
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| GONG Yi,LUO Han-jin,WEI Chao-hai. Mechanism of Degradation of Reactive Light Yellow X-7G by Ozonation[J]. Environmental Science and Technology, 2009, 32(3) |
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| Authors: | GONG Yi LUO Han-jin WEI Chao-hai |
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| Affiliation: | GONG Yi,LUO Han-jin,WEI Chao-hai (College of Environmental Science and Engineering,South China University of Technology,Guangzhou 510006,China) |
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| Abstract: | Degradation of a kind of yellow azo dyes using ozone was studied,involving Cl-,SO42-,NO3- and NH4+,which were generated during the ozonation process and were analyzed by using ion chromatography. Decomposition of the yellow azo dye was studied by measuring absorbance,electric conductivity and pH,and the study indicated that decolorization of the dye followed the pseudo-first-order kinetics. |
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| Keywords: | reactive dye ozonation decolorization degradation |
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