| 球形棕囊藻对Pb2+的吸附动力学 |
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| 引用本文： | 黄月华,尹平河,赵玲,黄凤.球形棕囊藻对Pb2+的吸附动力学[J].环境科学学报,2009,29(5):930-933. |
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| 作者姓名： | 黄月华 尹平河 赵玲 黄凤 |
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| 作者单位： | 暨南大学,生命科学技术学院,广州510632 |
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| 基金项目： | 广东省自然科学基金重点项目，国家自然科学基金 |
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| 摘 要： | 研究了球形棕囊藻对金属离子Pb2+在球形棕囊藻上的生物吸附特性.结果显示,Pb2+在球形棕囊藻上的生物吸附可以分为2个阶段,第1阶段为物理吸附,在10min内快速达到平衡;第2阶段为金属离子向藻内部的迁移,过程缓慢.通过拟合得到了吸附过程的准二级动力学方程,参数k为0.0025 g·mg-1·min-1,qe为19.8 mg·g-1.吸附等温线结果表明.Pb2+在球形棕囊藻上的生物吸附可以用Langmuir来描述,最大吸附量qmax为20.2 mg·g-1.
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| 关 键 词： | 球形棕囊藻 重金属 生物吸附 动力学 |
| 收稿时间： | 7/5/2008 5:50:52 PM |
| 修稿时间： | 2008/10/16 0:00:00 |
Kinetics of Pb2+ biosorption by algae biomass of Phaeocystis globosa |
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| HUANG Yuehu,YIN Pinghe,ZHAO Ling and HUANG Feng.Kinetics of Pb2+ biosorption by algae biomass of Phaeocystis globosa[J].Acta Scientiae Circumstantiae,2009,29(5):930-933. |
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| Authors: | HUANG Yuehu YIN Pinghe ZHAO Ling and HUANG Feng |
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| Affiliation: | HUANG Yuehua,YIN Pinghe,ZHAO Ling,HUANG Feng College of Life Science , Technology,Jinan University,Guangzhou 510632 |
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| Abstract: | Kinetics and equilitrium isotherm of Pb2+ biosorption by algae biomass of Phaeocystis globosa were investigated in this study.The experimental results showed that the process of Pb2+ biosorption onto the algae biomass of phaeocystis globosa took place in two stages.The first stage was a physical sorption and reached equilibrium within 10 minutes.The second stage was a slow migration of Pb2+ to the interior of the algae biomass.The biosorption kinetics could be described quite well by the pseudo second-order... |
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| Keywords: | Pb2 |
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