| 小球藻对海水中Pb2+的生物吸附研究 |
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| 引用本文： | 寇希元,张晓青,张爱君,张雨山,王静.小球藻对海水中Pb2+的生物吸附研究[J].化学工业与工程,2011,28(2):40-44. |
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| 作者姓名： | 寇希元 张晓青 张爱君 张雨山 王静 |
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| 作者单位： | 国家海洋局天津海水淡化与综合利用研究所，天津 300192 |
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| 基金项目： | 中央级公益性科研院所专项资金项目(K-JBYWF-2009-T04); 国家“十一五”科技支撑计划课题资助项目(2006BAB03A08) |
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| 摘 要： | 研究了小球藻对海水中Pb2+吸附的特性，探讨了吸附热力学和动力学。考察了吸附剂用量、pH值、温度、Pb2+的起始浓度和时间等对吸附的影响。研究表明，在试验浓度范围内，吸附剂的用量对吸附率的影响不大；pH值对吸附影响较大，小球藻吸附Pb2+的适宜pH值为4～6；小球藻对Pb2+吸附的吸附量与其浓度呈正相关；在25 ℃时，小球藻对Pb2+的吸附非常快，60 min达到吸附平衡，其动力学数据符合准二级动力学模型，对Pb2+的吸附可以用Freundlich等温方程来描述，对含铅污染的海水净化处理具有探索性及指导性意义
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| 关 键 词： | 生物吸附 小球藻 动力学 Pb2+ |
Biosorption of Pb~(2+) in Seawater by Chlorella Pyrenoidosa |
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| KOU Xi-yuan,ZHANG Xiao-qing,ZHANG Ai-jun,ZHANG Yu-shan,WANG Jing.Biosorption of Pb~(2+) in Seawater by Chlorella Pyrenoidosa[J].Chemical Industry and Engineering,2011,28(2):40-44. |
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| Authors: | KOU Xi-yuan ZHANG Xiao-qing ZHANG Ai-jun ZHANG Yu-shan WANG Jing |
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| Affiliation: | Tianjin Institute of Seawater Desalination and Multi purpose Utilization, State Oceanic Administration, Tianjin 300192，China |
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| Abstract: | The process of biosorption of Pb2 + by chlorella pyrenoidosa,its adsorption thermodynamics and adsorption kinetics were investigated in this paper.The effects of biomass concentration,pH value,temperature,initial Pb2 + concentration and adsorption time on biosorption were studied respectively.Result showed that the adsorption rate did not fluctuate remarkably when the biomass concentration varied at the range of 0.5 g /L to 4 g /L.The biosorption was significantly affected by initial solution pH and the opt... |
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| Keywords: | biosorption chlorella pyrenoidosa kinetics Pb2 |
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