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| 两种海藻吸附锌离子的比较研究 | |
| 引用本文： | 常秀莲,孟辉,冯咏梅,王安静.两种海藻吸附锌离子的比较研究[J].烟台大学学报(自然科学与工程版),2004,17(3):201-204. |
| 作者姓名： | 常秀莲 孟辉 冯咏梅 王安静 |
| 作者单位： | 1. 烟台大学,化学工程系,山东,烟台,264005 2. 烟台招商引资监督办公室,山东,烟台264000 3. 烟台钢管厂,山东,烟台,264000 |
| 基金项目： | 山东省教育厅资助项目(J01C12). |
| 摘 要： | 采用裙带莱、紫菜作为吸附剂，吸附溶液中Zn^2 ．结果表明，裙带莱对Zn^2 的吸附约需要2h达到平衡，紫菜约需1h，适宜的pH值范围均为3～6．裙带莱对Zn^2 的吸附等温线适宜用Freundlich方程来表达，紫菜对Zn^2 的吸附适宜用Largmuir方程表达．从kangmuir方程的拟合得知：裙带莱对Zn^2 的最大饱和吸附量为10.5mmol/g，是紫菜的5.5倍． |
| 关 键 词： | 裙带菜 紫菜 锌离子 吸附平衡 |
| 文章编号： | 1004-8820(2004)03-0201-04 |
Comparative Investigation of Zn2+ Biosorption on Undaria pinnatifida and Laver |
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| CHANG Xiu-lian,MENG Hui,FENG Yong-mei,WAN An-jing.Comparative Investigation of Zn2+ Biosorption on Undaria pinnatifida and Laver[J].Journal of Yantai University(Natural Science and Engineering edirion),2004,17(3):201-204. | |
| Authors: | CHANG Xiu-lian MENG Hui FENG Yong-mei WAN An-jing |
| Institution: | CHANG Xiu-lian~1,MENG Hui~2,FENG Yong-mei~1,WAN An-jing~3 |
| Abstract: | Undaria pinnatifida and Laver have been used as biosorbents for the adsorption of Zn~(2+) in aqueous solution. The results show that it takes about 2 h for Zn~(2+) adsorption by Undaria pinnatifida and about 1 h on Laver to achieve equilibrium both in the optimal pH range of 3 to 6. Zn~(2+) adsorption on Undaria pinnatifida fits Freundlich equation well and that on Laver models Langmuir equation better. Under the experiment conditions, the maximum adsorption capacity of Zn~(2+) adsorption on Undaria pinnatifida comes to 10.5mmol/g while only 1.91mmol/g on Laver, i.e.the former being 5.5 times the adsorption capacity of the latter. |
| Keywords: | Undaria pinnatifida Laver Zn~(2+) adsorption equilibrium |
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