| 皮氏罗尔斯通氏菌DX-T3-01苯酚降解特性及动力学 |
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| 引用本文： | 付瑾,谢学辉,洪玫,张诚,柳建设.皮氏罗尔斯通氏菌DX-T3-01苯酚降解特性及动力学[J].环境科学与技术,2011,34(8):1-4,21. |
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| 作者姓名： | 付瑾 谢学辉 洪玫 张诚 柳建设 |
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| 作者单位： | 东华大学环境科学与工程学院,上海,201620 |
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| 基金项目： | 全国优秀博士学位论文作者专项资金项目资助(200549); 国家自然科学基金项目(50874032); 上海市重点学科建设项目(B604) |
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| 摘 要： | 筛选自德兴铜矿对重金属Cd2+有较强抗性的皮氏罗尔斯通菌DX-T3-01菌株,经驯化发现其对苯酚也有较强的降解能力。通过正交实验确定了该菌株苯酚降解最佳条件为:30℃、pH 7.0、转速150 r/min、接种量1%(V/V),并探讨了外加碳源和重金属对苯酚降解的影响。在最佳苯酚降解条件下,初始苯酚浓度为500 mg/L的苯酚经56 h后可降解至检测限,最高可降解苯酚浓度为800 mg/L。当初始苯酚浓度300～600 mg/L时,菌株降解苯酚的动力学过程符合Monod零级反应模型。
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| 关 键 词： | 皮氏罗尔斯通氏菌 苯酚 生物降解 动力学研究 |
Phenol-degradation Characteristics and Kinetics of Ralstonia pickettii Strain DX-T3-01 |
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| FU Jin,XIE Xue-hui,HONG Mei,ZHANG Cheng,LIU Jian-she.Phenol-degradation Characteristics and Kinetics of Ralstonia pickettii Strain DX-T3-01[J].Environmental Science and Technology,2011,34(8):1-4,21. |
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| Authors: | FU Jin XIE Xue-hui HONG Mei ZHANG Cheng LIU Jian-she |
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| Affiliation: | FU Jin,XIE Xue-hui,HONG Mei,ZHANG Cheng,LIU Jian-she(School of Environmental Science and Engineering,Donghua University,Shanghai 201620,China) |
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| Abstract: | Ralstonia pickettii strain DX-T3-01,isolated from Dexing Copper Mine,was identified to have phenol-degrading capability by acclimation.The optimum phenol-degrading conditions were obtained by orthogonal experiment,which were 30 ℃,pH 7.0,150 r/min and 1%(V/V).The effects of glucose as carbon source and heavy metal on phenol-degrading were discussed.Under the best conditions for degradation,phenol with initial concentration of 500 mg/L could be degraded completely in 56 h,with the maximum degradation concentration as 800 mg/L.The kinetics of phenol degradation between 300 mg/L and 600 mg/L were preliminary studied with Monod model zero-order reaction,and the model can well explain the experimental phenomena. |
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| Keywords: | Ralstonia pickettii phenol biodegradation kinetics |
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