| 温度对好氧颗粒污泥吸附铅离子的影响 |
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| 引用本文： | 姚磊,叶正芳,王中友,倪晋仁.温度对好氧颗粒污泥吸附铅离子的影响[J].环境科学,2009,30(6):1733-1737. |
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| 作者姓名： | 姚磊 叶正芳 王中友 倪晋仁 |
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| 作者单位： | 北京大学环境工程系,水沙科学教育部重点实验室,北京,100871 |
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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(2008ZX07212-01) |
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| 摘 要： | 由活性污泥培养得到好氧颗粒污泥，研究了温度对好氧颗粒污泥吸附Pb2+的影响.结果表明，好氧颗粒污泥主要含有C、H、N、O、P等元素，其经验结构式为C5.7H10.9O3.9NS0.04.好氧颗粒污泥表面主要由球状细菌组成，具有明显的孔隙结构.在20～40℃时，Pb2+在好氧颗粒污泥上的吸附过程可以由Langmuir和Freundlich等温方程进行拟合（R2>0.914）.Pb2+最大吸附量Qmax由80.65 mg·g-1（20℃）增至97.09 mg·g-1（40℃）.吸附过程的表观自由能变ΔG<0、 ΔH>0、 ΔS>0，表明Pb2+在好氧颗粒污泥表面的吸附为吸热、熵增的自发过程.红外扫描分析(FTIR)结果表明，吸附过程Pb2+主要与—OH、蛋白质中的—COOH以及PO发生作用，与含氮官能团无关.
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| 关 键 词： | 好氧颗粒污泥 Pb2+ 温度 热力学 |
| 收稿时间： | 2008/6/22 0:00:00 |
| 修稿时间： | 9/3/2008 12:00:00 AM |
Effect of Temperature on the Pb2+ Biosorption with Aerobic Granules |
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| YAO Lei,YE Zheng fang,WANG Zhong you and NI Jin ren.Effect of Temperature on the Pb2+ Biosorption with Aerobic Granules[J].Chinese Journal of Environmental Science,2009,30(6):1733-1737. |
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| Authors: | YAO Lei YE Zheng fang WANG Zhong you and NI Jin ren |
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| Institution: | Key Laboratory of Water and Sediment Sciences;Department of Environmental Engineering;Peking University;Beijing 100871;China |
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| Abstract: | Experimental studies were conducted on the effect of temperature on the Pb~(2+) biosorption with aerobic granules seeding with floccular activated sludge.The results showed that the aerobic granules manly comprised the elements of C,H,N,O and P.According to the elemental compositions of the microbial granules,the corresponding empirical formula of the granules can be determined as C_(5.7)H_(10.9)O_(3.9)NS_(0.04).ESEM results showed many coccoid bacteria were visiable on the granule surface with porous struc... |
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| Keywords: | aerobic granules Pb2+ temperature thermodynamics |
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