| 光合细菌对2,4,6-三氯苯酚的降解特性研究 |
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| 引用本文： | 姚斌,金赞芳,胡忠策,金琼,潘志彦. 光合细菌对2,4,6-三氯苯酚的降解特性研究[J]. 中国环境科学, 2011, 31(10): 1669-1675 |
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| 作者姓名： | 姚斌 金赞芳 胡忠策 金琼 潘志彦 |
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| 作者单位： | 浙江工业大学生物与环境工程学院,浙江杭州,310032 |
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| 基金项目： | 国家科技重大专项(2008ZX07101-006); 国家自然科学基金资助项目(40803027); 浙江省环境污染控制技术研究重点实验室项目(2010-09) |
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| 摘 要： | 研究了混合光合细菌PSB-DR在不同光照、接种量和pH值下对2,4,6-三氯苯酚(2,4,6-TCP)的生物降解特性,确定了PSB-DR生物降解2,4,6-TCP的优化控制条件.结果表明,光照培养下,接种量30%,初始pH值7.0时2,4,6-TCP降解效率最高.在此条件下,50mg/L的2,4,6-TCP经5d后降解率达到82.3%.培养基中醋酸钠的加入对2,4,6-TCP降解有明显的抑制作用.PSB-DR静息细胞对2,4,6-TCP的降解符合高浓度底物抑制的酶促反应类型,其降解动力学参数rmax=1.746h-1,Km=38.333mg/L,Ki=260.87mg/L.
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| 关 键 词： | 光合细菌 生物降解 2 4 6-三氯苯酚 降解动力学 |
| 收稿时间： | 2011-01-07; |
Biodegradation characteristics of 2,4,6-trichlorophenol by photosynthetic bacteria |
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| YAO Bin,JIN Zan-fang,HU Zhong-ce,JIN Qiong,PAN Zhi-yan. Biodegradation characteristics of 2,4,6-trichlorophenol by photosynthetic bacteria[J]. China Environmental Science, 2011, 31(10): 1669-1675 |
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| Authors: | YAO Bin JIN Zan-fang HU Zhong-ce JIN Qiong PAN Zhi-yan |
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| Affiliation: | YAO Bin,JIN Zan-fang,HU Zhong-ce,JIN Qiong,PAN Zhi-yan(College of Biological and Environmental Engineering,Zhejiang University of Technology,Hangzhou 310032,China) |
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| Abstract: | Degradation of 2,4,6-trichlorophenol(2,4,6-TCP) by mixed cultures photosynthetic bacteria PSB-DR at different illumination,inoculum density and initial pH were investigated.The degradation conditions were optimized to be incubation with an inoculum density of 30% and initial pH 7.0 under light.About 82.3% of 2,4,6-TCP with initial concentration of 50mg/L was removed after 5d incubation under the condition.The addition of sodium acetate into the substrate greatly suppressed 2,4,6-TCP biodegradation.The degra... |
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| Keywords: | photosynthetic bacteria biodegradation 2 4 6-trichlorophenol biodegradation kinetics |
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