| 负载金属镧的壳聚糖对氟离子的吸附动力学 |
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| 引用本文： | 姚瑞华,孟范平,张龙军,马冬冬.负载金属镧的壳聚糖对氟离子的吸附动力学[J].离子交换与吸附,2009,25(4). |
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| 作者姓名： | 姚瑞华 孟范平 张龙军 马冬冬 |
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| 作者单位： | 海洋环境与生态教育部重点实验室,中国海洋大学,青岛,266100 |
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| 基金项目： | 山东省优秀中青年科学家科研奖励基金 |
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| 摘 要： | 利用负载金属镧的壳聚糖对含氟水进行吸附处理.该除氟剂的最佳吸附条件:pH值为7,温度为323K,吸附时间为60min.吸附剂对F的吸附过程符合Langmuir等温线方程,对F的饱和吸附容量为476.190mg/g.吸附动力学符合拟二级速率方程,颗粒内扩散过程和液膜形成的边界层是吸附过程的主要限速步骤.
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| 关 键 词： | 氟离子 壳聚糖 吸附动力学 |
ADSORPTION KINETICS OF FLUORIDE ION USING LANTHANUM-MODIFIED CHITOSAN |
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| YAO Ruihua,MENG Fanping,ZHANG Longjun,MA Dongdong.ADSORPTION KINETICS OF FLUORIDE ION USING LANTHANUM-MODIFIED CHITOSAN[J].Ion Exchange and Adsorption,2009,25(4). |
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| Authors: | YAO Ruihua MENG Fanping ZHANG Longjun MA Dongdong |
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| Institution: | YAO Ruihua MENG Fanping ZHANG Longjun MA Dongdong Key Lab of Marine Environment Science , Ecology,Ministry of Education Ocean University of China,Qingdao 266100,China |
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| Abstract: | The water containing high fluoride ions was treated by the applicability of lanthanum-modified chitosan. The treatment conditions were optimized:pH value was 7,temperature was at 323K,and contact time was 60min. The equilibrium adsorption data were fitted reasonably well for Langmuir isotherm model,the maximum adsorption capacity for F-was 476.190mg/g. Adsorption kinetics study revealed that the adsorption process followed pseudo-second-order model,the adsorption process was complex,both the boundary of liq... |
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| Keywords: | Fluoride ion Chitosan Adsorption kinetics |
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