Equilibrium, kinetic and thermodynamic studies of uranium biosorption by calcium alginate beads
文献类型：期刊论文
| 作者 | Bai, Jing2 ; Fan, Fangli2; Wu, Xiaolei2; Tian, Wei1,2; Zhao, Liang1,2; Yin, Xiaojie2; Fan, Fuyou1,2; Li, Zhan2; Tian, Longlong2; Wang, Yang1,2
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| 刊名 | JOURNAL OF ENVIRONMENTAL RADIOACTIVITY
 |
| 出版日期 | 2013-12-01 |
| 卷号 | 126页码:226-231 |
| 关键词 | Calcium Alginate Beads Uranium Equilibrium Kinetics Thermodynamics |
| ISSN号 | 0265-931X |
| DOI | 10.1016/j.jenvrad.2013.08.010 |
| 文献子类 | Article |
| 英文摘要 | Calcium alginate beads are potential biosorbent for radionuclides removal as they contain carboxyl groups. However, until now limited information is available concerning the uptake behavior of uranium by this polymer gel, especially when sorption equilibrium, kinetics and thermodynamics are concerned. In present work, batch experiments were carried out to study the equilibrium, kinetics and thermodynamics of uranium sorption by calcium alginate beads. The effects of initial solution pH, sorbent amount, initial uranium concentration and temperature on uranium sorption were also investigated. The determined optimal conditions were: initial solution pH of 3.0, added sorbent amount of 40 mg, and uranium sorption capacity increased with increasing initial uranium concentration and temperature. Equilibrium data obtained under different temperatures were fitted better with Langmuir model than Freundlich model, uranium sorption was dominated by a monolayer way. The kinetic data can be well depicted by the pseudo-second-order kinetic model. The activation energy derived from Arrhenius equation was 30.0 kJ/mol and the sorption process had a chemical nature. Thermodynamic constants such as Delta H-0, Delta S-0 and Delta G(0) were also evaluated, results of thermodynamic study showed that the sorption process was endothermic and spontaneous. (C) 2013 Elsevier Ltd. All rights reserved. |
| WOS关键词 | AQUEOUS-SOLUTIONS ; RHODOTORULA-GLUTINIS ; DEPLETED URANIUM ; REMOVAL ; BIOMASS ; WASTE ; WATER ; ADSORPTION ; MECHANISM ; RECOVERY |
| 资助项目 | Innovation Key Program of the Chinese Academy of Sciences[KJCX2-YW-N49-2] ; Innovation Key Program of the Chinese Academy of Sciences[KJCX2-YW-N50-3] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000329415800028 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.186/handle/113462/48087]  |
| 专题 | 近代物理研究所_实验物理中心 |
| 通讯作者 | Bai, Jing |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bai, Jing,Fan, Fangli,Wu, Xiaolei,et al. Equilibrium, kinetic and thermodynamic studies of uranium biosorption by calcium alginate beads[J]. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,2013,126:226-231. |
| APA | Bai, Jing.,Fan, Fangli.,Wu, Xiaolei.,Tian, Wei.,Zhao, Liang.,...&Guo, Junsheng.(2013).Equilibrium, kinetic and thermodynamic studies of uranium biosorption by calcium alginate beads.JOURNAL OF ENVIRONMENTAL RADIOACTIVITY,126,226-231. |
| MLA | Bai, Jing,et al."Equilibrium, kinetic and thermodynamic studies of uranium biosorption by calcium alginate beads".JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 126(2013):226-231. |
入库方式： OAI收割
来源：近代物理研究所
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