| Pannonibacter phragmitetus T1菌对pb2+的吸附特性 |
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| 引用本文： | 苏艳蓉,柴立元,杨志辉,尤翔宇,朱咏华.Pannonibacter phragmitetus T1菌对pb2+的吸附特性[J].中国有色金属学报,2011,21(12). |
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| 作者姓名： | 苏艳蓉 柴立元 杨志辉 尤翔宇 朱咏华 |
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| 作者单位： | 1. 中南大学冶金科学与工程学院,长沙410017;中机国际工程设计研究院有限责任公司,长沙410007
2. 中南大学冶金科学与工程学院,长沙,410017 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项资助项目(2009ZX07212-001-01); 国家杰出青年科学基金资助项目(50925417); 国家自然科学基金重点资助项目(50830301) |
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| 摘 要： | 以pannonibacter phragmitetusT1菌作为生物吸附剂,研究细菌代谢活性、培养时间、溶液pH值、菌体用量、温度、吸附时间、初始金属浓度等因素对其吸附重金属pb2+的影响,并进一步研究吸附机理.结果表明,培养12h的灭活T1菌体在pb2+浓度为150 mg/L、pH值为6、T1菌添加量为0.5 g/L、温度为30℃的条件下,对Pb2+的最大吸附量为68.35 mg/g;灭活T1菌对重金属Pb2+的吸附过程较快,90 min即达到吸附平衡,pb2+的吸附符合Pseudo-second order模型和Langmuir等温吸附模型.结合红外光谱分析,灭活pannonibacter phragmitetus T1 菌对Pb2+是表面吸附,羟基和酰胺基是与Pb2+络合反应的主要基团.
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| 关 键 词： | pannonibacter phragmitetus T1菌 铅离子 吸附条件 吸附机理 |
Biosorption characteristics of Pb~(2+) by Pannonibacter phragmitetus T1 |
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| SU Yan-rong
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CHAI Li-yuan
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YANG Zhi-hui
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YOU Xiang-yu
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ZHU Yong-hua.Biosorption characteristics of Pb~(2+) by Pannonibacter phragmitetus T1[J].The Chinese Journal of Nonferrous Metals,2011,21(12). |
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| Authors: | SU Yan-rong CHAI Li-yuan YANG Zhi-hui YOU Xiang-yu ZHU Yong-hua |
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| Affiliation: | SU Yan-rong1,2,CHAI Li-yuan1,YANG Zhi-hui1,YOU Xiang-yu1,ZHU Yong-hua1(1.School of Metallurgical Science and Engineering,Central South University,Changsha 410017,China,2.China Machinery International Engineering Design & Research Institute Co.,Ltd.,Changsha 410007,China) |
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| Abstract: | The pannonibacter phragmitetus T1 was used as bio-sorbent,the effects of the factors such as the metabolic activity of bacteria,culture time,pH value,biomass concentration,temperature,adsorption time and initial concentration of metal ions on the biosorption of Pb2+ were determined,and the adsorption mechanism was further discussed.The results show that the maximum adsorption capacity of T1 for Pb2+ reaches 68.35 mg/g under the optimal conditions as the Pb2+ concentration of 150 mg/L,pH value of 6,the nonli... |
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| Keywords: | pannonibacter phragmitetus T1 Pb2 biosorption condition biosorption mechanism |
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