| Biosorption and desorption of Cd^2＋ from wastewater by dehydrated shreds of Cladophorafascicularis |
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| 引用本文： | 邓莉萍,朱校斌,苏营营,苏华,王新亭. Biosorption and desorption of Cd^2＋ from wastewater by dehydrated shreds of Cladophorafascicularis[J]. 中国海洋湖沼学报, 2008, 26(1): 45-49. DOI: 10.1007/s00343-008-0045-0 |
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| 作者姓名： | 邓莉萍 朱校斌 苏营营 苏华 王新亭 |
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| 作者单位： | Institute of Oceanology，Chinese Academy of Sciences，Qingdao 266071，China，Graduate School，Chinese Academy of Sciences，Beijing 100049，China |
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| 基金项目： | Supported by China＇s 973 Program （No. 2002CB412402） and Key Project of the Chinese Academy of Sciences （No. KJCX315W-215）. |
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| 摘 要： | The adsorption and desorption of algae Cladophora fascicularis and their relation with initial Cd^2＋ concentration, initial pH, and co-existing ions were studied. Adsorption equilibrium and biosorption kinetics were established from batch experiments. The adsorption equilibrium was adequately described by the Langmuir isotherm, and biosorption kinetics was in pseudo-second order model. The experiment on co-existing ions showed that the biosorption capacity of biomass decreased with an increasing concentration of competing ions. Desorption experiments indicated that EDTA was efficient desorbent for recovery from Cd^2＋. With high capacities of metal biosorption and desorption, the biomass of Cladophora fascicularis is promising as a cost-effective biosorbent for the removal of Cd^2＋ from wastewater.
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| 关 键 词： | 废水处理 生物吸附作用 镉 解吸附作用 脱水 |
| 文章编号： | 10.1007/s00343-008-0045-0 |
| 收稿时间： | 2006-02-20 |
| 修稿时间： | 2006-07-18 |
Biosorption and desorption of Cd2+ from wastewater by dehydrated shreds of Cladophora fascicularis |
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| Deng Liping,Zhu Xiaobin,Su Yingying,Su Hua,Wang Xinting. Biosorption and desorption of Cd2+ from wastewater by dehydrated shreds of Cladophora fascicularis[J]. Chinese Journal of Oceanology and Limnology, 2008, 26(1): 45-49. DOI: 10.1007/s00343-008-0045-0 |
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| Authors: | Deng Liping Zhu Xiaobin Su Yingying Su Hua Wang Xinting |
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| Affiliation: | (1) Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China;(2) Graduate School, Chinese Academy of Sciences, Beijing, 100049, China |
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| Abstract: | The adsorption and desorption of algae Cladophora fascicularis and their relation with initial Cd2 concentration,initial pH,and co-existing ions were studied.Adsorption equilibrium and biosorption kinetics were established from batch experiments.The adsorption equilibrium was adequately described by the Langmuir isotherm,and biosorption kinetics was in pseudo-second order model.The experiment on co-existing ions showed that the biosorption capacity of biomass decreased with an increasing concentration of competing ions.Desorption experiments indicated that EDTA was efficient desorbent for recovery from Cd2 .With high capacities of metal biosorption and desorption,the biomass of Cladophora fascicularis is promising as a cost-effective biosorbent for the removal of Cd2 from wastewater. |
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| Keywords: | biosorption Cd2 Cladophora fascicularis wastewater desorption desorbent |
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