| 壳聚糖/纤维素复合微球对Cu2+的吸附 |
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| 引用本文： | 李志强,戴荧. 壳聚糖/纤维素复合微球对Cu2+的吸附[J]. 化工时刊, 2009, 23(10). DOI: 10.3969/j.issn.1002-154X.2009.10.013 |
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| 作者姓名： | 李志强 戴荧 |
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| 作者单位： | 深圳万山红环保实业有限公司,广东,深圳,518053;东华理工大学核资源与环境教育部重点实验室,江西,抚州,344000 |
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| 摘 要： | 制备壳聚糖/纤维素(CS/CE)和交联壳聚糖/纤维素(ECS/CE)复合微球,用于吸附重金属离子,考察了微球对Cu2+的吸附性能。溶解性测试表明交联反应可提高微球在酸性介质中的化学稳定性。静态吸附表明,CS/CE和ECS/CE均能有效吸附Cu2+,pH 6附近吸附容量最大。吸附等温线与Langmuir和Freundlich模型均吻合,由Lang-muir模型得到的Cu2+饱和吸附容量分别为38.76 mg/g(CS/CE)和34.13 mg/g(ECS/CE)。CS/CE和ECS/CE对Cu2+的吸附初期为内扩散控制,但后期为配合反应控制。FTIR和X-射线光电子能谱(XPS)分析表明,壳聚糖中的N为Cu2+的主要吸附位,发生表面配合吸附。
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| 关 键 词： | 壳聚糖/纤维素 吸附 Cu2+ |
Chitosan/Cellulose Hybrid Microspheres for Cu2+ Ions Adsorption |
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| Li Zhiqiang,Dai Ying. Chitosan/Cellulose Hybrid Microspheres for Cu2+ Ions Adsorption[J]. Chemical Industry Times, 2009, 23(10). DOI: 10.3969/j.issn.1002-154X.2009.10.013 |
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| Authors: | Li Zhiqiang Dai Ying |
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| Affiliation: | 1.Wanshanhong Environmental Protection Industry Limited;Guangdong Shenzhen;2.Key Laboratory of Nuclear Resources and Environment;East China Institute of Technology;Ministry of Education;Jiangxi Fuzhou 344000 |
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| Abstract: | Chitosan/cellulose(CS/CE) and the crosslinked chitosan/cellulose(ECS/CE) hybrid microspheres were prepared for heavy metal ions adsorption.The adsorption performance of CS/CE and ECS/CE toward Cu2+ ions was investigated.The results of the dissolution tests indicated the cross-linking reaction significantly increased the chemical stability of the hybrid microspheres in acid media.Batch adsorption experiments showed that both CS/CE and ECS/CE could adsorb effectively Cu2+ ions,with the maximum adsorption at p... |
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| Keywords: | chitosan/cellulose adsorption Cu2+ ions |
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