| 微波辅助氢氧化钠改性沸石及其对Zn~(2+)的吸附 |
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| 引用本文： | 栗印环,张秀兰,金雅楠,张蔚. 微波辅助氢氧化钠改性沸石及其对Zn~(2+)的吸附[J]. 信阳师范学院学报(自然科学版), 2015, 0(1): 82-85 |
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| 作者姓名： | 栗印环 张秀兰 金雅楠 张蔚 |
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| 作者单位： | 信阳师范学院化学化工学院,河南信阳,464000 |
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| 基金项目： | 河南省重点科技攻关项目 |
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| 摘 要： | 利用微波辅助Na OH对天然沸石进行改性,在单因素实验的基础上对改性条件进行了优化,得出沸石改性的最优实验条件为:Na OH改性液浓度为0.5 mol/L、微波功率480 W、微波辐射时间5 min.探讨改性沸石对Zn2+的吸附行为.结果表明:改性沸石对Zn2+的吸附能力明显增强.在优化实验条件下对质量浓度为50 mg/L的Zn2+的去除率达95.68%.Langmuir吸附模型比Freundlich吸附模型能更好地模拟改性沸石对Zn2+的吸附过程,吸附动力学方程以准二级动力学方程拟合的效果最优.
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| 关 键 词： | 微波 沸石 改性 吸附 Zn2+ 吸附动力学 |
Microwave Assisted NaOH Modified Zeolite and Its Adsorption Properties of Zn2+ |
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| Li Yinhuan,Zhang Xiulan,Jin Ya’ nan,Zhang Wei. Microwave Assisted NaOH Modified Zeolite and Its Adsorption Properties of Zn2+[J]. Journal of Xinyang Teachers College(Natural Science Edition), 2015, 0(1): 82-85 |
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| Authors: | Li Yinhuan Zhang Xiulan Jin Ya’ nan Zhang Wei |
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| Affiliation: | Li Yinhuan;Zhang Xiulan;Jin Ya’nan;Zhang Wei;College of Chemistry and Chemical Engineering,Xinyang Normal University; |
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| Abstract: | The natural zeolite was modified with Na OH assisted with microwave. On the basis of single factor experiments,the optimization methods were as follows: 0. 5 mol / L of Na OH,480 W of microwave power,5 min of radiation time. The adsorption behavior of the modified zeolite to Zn2 +in waste water was investigated. The results showed that the modified zeolite could greatly enhance absorption capability of Zn2 +. Under the optimum conditions,the removal rate of Zn2 +( 50 mg/L) in water by modified zeolite could be up to 95. 68%. According to the adsorption isotherm curves,the adsorption model of Langmuir was better than Freundlich in simulating this adsorption process. The adsorption kinetics of modified zeolite can be well described by pseudo-second-order kinetic equation. |
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| Keywords: | microwave zeolite modification adsorption Zn2+ adsorption kinetics |
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