| Citrobacter sp. CK3对活性红KN-3B的脱色反应动力学研究 |
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| 引用本文： | 赖正,熊小京,郑天凌,林光辉,张章堂. Citrobacter sp. CK3对活性红KN-3B的脱色反应动力学研究[J]. 环境污染治理技术与设备, 2012, 0(8): 2892-2896 |
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| 作者姓名： | 赖正 熊小京 郑天凌 林光辉 张章堂 |
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| 作者单位： | [1]厦门大学深圳研究院,深圳518057 [2]厦门大学环境与生态学院,厦门361005 [3]厦门大学生命科学学院,厦门361005 [4]清华大学全球变化研究院,北京100084 [5]台湾宜兰大学环境科学与工程系,台湾260 |
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| 基金项目： | 深圳市科技计划项目深港创新应用研发专题资助（08Lh-04）;福建省科技计划项目资助（2009Y0048） |
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| 摘 要： | 采用脱色菌Citrobacter sp. CK3,以活性红KN-3B染料为处理对象,在厌氧批式反应条件下,系统考察了pH值,温度和染料浓度对脱色反应速度的影响;通过动力学模拟及反应过程中染料的UV-Vis扫描图分析,探讨了脱色反应机理。结果表明：Citrobacter sp. CK3对活性红KN-3B的脱色反应的适宜pH为7～9;脱色反应速度在温度为32℃时达到最大。染料初浓度从57 mg/L逐渐增大到458 mg/L时脱色率逐渐降低。脱色过程中染料的偶氮键发生断裂,脱色反应符合二级反应动力学。
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| 关 键 词： | Citrobacter sp. CK3 活性红R180 脱色反应 动力学模拟 |
Kinetics study on decolorization of Reactive Red KN-3B by Citrobacter sp. CK3 |
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| Lai Zheng,Xiong Xiaojingl,Zheng Tianling,Lin Guanghui,Zhang Zhangtang. Kinetics study on decolorization of Reactive Red KN-3B by Citrobacter sp. CK3[J]. Techniques and Equipment for Environmental Pollution Control, 2012, 0(8): 2892-2896 |
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| Authors: | Lai Zheng Xiong Xiaojingl Zheng Tianling Lin Guanghui Zhang Zhangtang |
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| Affiliation: | 1. Shenzhen Institute, Xiamen University, Shenzhen 518057, China; 2. College of the Environmental and Ecological, Xiamen University Xiamen 361005 ,China; 3. School of Life Sciences, Xiamen University, Xiamen 361005 ,China; 4. Institute for Globla Change Studies, Tsinghua University,Beijing 100084,China; 5. Department of Environmental and Engineering, Yilan University, Taiwan 260, China) |
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| Abstract: | The kinetic modeling and mechanism with which Citrobacter sp. CK3 removed the textile dye, C.I. Reactive Red 180, from aqueous solution was investigated using different parameters, such as initial dye concentration,pH and temperature. In anaerobic batch experiments, the decolorization efficiency decreased with increase in initial dye concentration. The high decolorization rate was observed at pH of 7 -9 and temperature of 32C. The decolorization followed a second order kinetic model. The UV-Vis spectra analysis revealed that the decolorization process was azo bond cleaved reaction. |
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| Keywords: | Citrobacter sp. CK3 C.I. Reactive Red 180 decolorization reaction kinetics modeling |
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