| 海藻酸对水溶液中Cu2+的吸附动力学研究 |
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| 引用本文： | 李嘉宁,孔庆山,高继贤,成芳芳,郭春香,纪全,夏延致.海藻酸对水溶液中Cu2+的吸附动力学研究[J].科学技术与工程,2010,10(4). |
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| 作者姓名： | 李嘉宁 孔庆山 高继贤 成芳芳 郭春香 纪全 夏延致 |
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| 作者单位： | 1. 青岛大学纤维新材料与现代纺织国家重点实验室培育基地,青岛,266071
2. 清华大学化学工程系,北京,100084 |
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| 基金项目： | 山东省自然科学基金(Q2008B04);;国家自然科学基金(50908120)资助 |
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| 摘 要： | 制备了交联海藻酸,从静态吸附方面研究了海藻酸交联前后对Cu~(2+)的吸附性能。用三种动力学模型(准一级动力学方程,准二级动力学方程,粒子扩散方程)对不同Cu~(2+)浓度、不同吸附时间的吸附曲线进行分析,探讨了吸附剂的吸附机理。结果表明准二级动力学模型的拟合度较好,海藻酸吸附Cu~(2+)是一个复杂的非均相扩散的化学吸附过程,表面络合和吸附剂内部扩散共同控制着吸附速率。交联后吸附的平衡时间延长,吸附量增大。交联后的海藻酸是一种价格低廉,绿色环保的吸附剂。
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| 关 键 词： | 海藻酸 吸附 Cu~（2+） 交联 |
| 收稿时间： | 11/5/2009 9:08:11 AM |
| 修稿时间： | 2009/11/20 0:00:00 |
ADSORPTION KINETIC STUDIES OF Cu2+ ONTO ALGINIC ACID FROM AQUEOUS SOLUTION |
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| Li Jianing,KONG Qingshan,GAO Jixian,CHENG Fangfang,GUO Chunxiang,JI Quan and XIA Yanzhi.ADSORPTION KINETIC STUDIES OF Cu2+ ONTO ALGINIC ACID FROM AQUEOUS SOLUTION[J].Science Technology and Engineering,2010,10(4). |
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| Authors: | Li Jianing KONG Qingshan GAO Jixian CHENG Fangfang GUO Chunxiang JI Quan and XIA Yanzhi |
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| Institution: | State Key Laboratory Cultivating Base of Advanced Fibers and Textiles/a>;Qingdao University/a>;Qingdao 266071/a>;P.R.China/a>;Department of Chemical Engineering~1/a>;Tsinghua University/a>;Beijing 100084/a>;P.R.China |
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| Abstract: | Corsslinking alginate acid was prepared as adsorbent to remove Cu~(2+) from aqueous solution.Three different kinds of kinetic models(i.e.,Lagergren' s pesudo - first - order and Ho' s pesudo-second-order equations and intraparticle diffusion model) were used to investigate the adsorption mechanisms.The results indicated that the adsorption behavior fitted Ho' s pesudo-second-order equation well.The adsorption of Cu~(2+) on alginic acid fiber is a complex and heterogeneous chemical adsorption process.Membran... |
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| Keywords: | Cu2+ |
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