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投稿时间：2012-07-09
投稿时间：2012-07-09
中文摘要: 利用NaCl溶液对天然沸石进行改性，探讨了NaCl质量浓度对改性效果的影响。通过等温吸附试验和吸附动力学试验，比较了天然沸石和改性沸石对氨氮的吸附性能。结果表明：在NaCl质量浓度为6%时，改性沸石对氨氮的吸附效果较优且经济性好；相对于Freundich线性模型来说，改性沸石对水溶液中NH+4的吸附过程更符合Langmuir线性模型，属优惠吸附；改性沸石对NH+4的吸附过程符合假二阶方程。
Abstract:Natural zeolite is modified by NaCl solution and the effects of NaCl concentration on modification is studied． In addition, the adsorption characteristics of the natural and NaCl modified zeolite on NH+4 in solution are compared through isothermal adsorption experiment and adsorption kinetics experiment． The results show that when the NaCl concentration is 6%, the obtained zeolite presents better ammonia adsorption property． Equilibrium adsorption of the NaCl modified zeolite for NH+4 are found to fit the Langmuir adsorption isotherm better than Freundlich adsorption isotherm． The process of ammonium adsorption of the NaCl modified zeolite accords with second order kinetics．
keywords: modified zeolite ammonia removal adsorption
文章编号：20130417 中图分类号： 文献标志码：
基金项目:上海市科学技术委员会能力建设计划项目(12250500900)
| 作者 | 单位 | |
| 李云辉 | 上海竹园第二污水处理厂, 上海 200137 | anying007@163.com |
| 安莹 | 上海电力学院, 上海 200090 |
引用文本：
李云辉,安莹.改性沸石去除水中氨氮的研究[J].上海电力大学学报,2013,29(4):383-386.
LI Yunhui,AN Ying.Study on Ammonia Removal from Water by Modified Zeolite[J].Journal of Shanghai University of Electric Power,2013,29(4):383-386.
李云辉,安莹.改性沸石去除水中氨氮的研究[J].上海电力大学学报,2013,29(4):383-386.
LI Yunhui,AN Ying.Study on Ammonia Removal from Water by Modified Zeolite[J].Journal of Shanghai University of Electric Power,2013,29(4):383-386.