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| 下载次数 | 被引频次 | 阅读次数 |
以十六烷基三甲基溴化铵(CTAB)改性沸石作为吸附剂,研究了其对水溶液中甲基橙(MO)的吸附行为。用红外光谱(FT-IR)和BET方法对沸石进行了表征。研究表明,CTAB改性沸石对MO的吸附符合Langmuir模型,在pH值为7、温度为298.15K、振荡速度为160r/min时,CTAB改性沸石对MO的最大吸附量为82mg/g。动态吸附实验表明,CTAB改性沸石对MO的吸附动力学可以用准二级动力学方程描述,说明它的吸附机理是一个物理与化学吸附过程。
Abstract：CTAB-modified zeolite was prepared as a cost-effective technology for the removal of Methyl Orange(MO) from wastewater. The modified zeolite was charactered by Fourier-Transform Infrared spectroscopy(FT-IR) and BET technique. The experimental data for both MO systems fitted the Langmuir isotherm model well. The maximum adsorption capacity of MO with CTAB-modified zeolite was 82mg/g with shake speed of 160r/min at 298.15 K and pH 7. The kinetic analysis demonstrated that the adsorption of MO onto CTAB-modified zeolite followed the Pseudo-second-order rate equation, suggesting that the adsorption mechanism was dominated by a physical and chemical adsorption process.
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基本信息:
DOI：10.16026/j.cnki.iea.2015050417
中图分类号:X788;O647.3
引用信息:
[1]李琨琪,晏雅婧,潘远凤,等.用于染料吸附的改性沸石吸附剂:机理及功能表征[J].离子交换与吸附,2015,31(05):417-429.DOI:10.16026/j.cnki.iea.2015050417.
基金信息:
国家自然科学基金(9120513017)