| 胺基接枝介孔材料MCM-41对低放废水的净化处理研究 |
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| 引用本文： | 姚青旭,贾铭椿,门金凤.胺基接枝介孔材料MCM-41对低放废水的净化处理研究[J].纳米科技,2012(3):13-18. |
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| 作者姓名： | 姚青旭 贾铭椿 门金凤 |
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| 作者单位： | 海军工程大学船舶与动力学院,湖北武汉430033 |
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| 摘 要： | 将合成的胺基接枝改性的介孔材料MCM-41用于吸附处理模拟低放废水中低浓度的Mn2＋和Co2＋，研究吸附时间和pH值对吸附容量的影响，相比三种吸附等温线模型对实验数据的拟合性能，结果表明，该吸附剂对低浓度金属离子的吸附足Sips等温线模型。吸附剂对Mn2＋和Co2＋的最大吸附容量分别为0．377mmol／g和0．384mmol／g。竞争吸附实验表明，吸附剂对Co2＋结合能力要大于Mn2＋。固定填充床的动态吸附实验表明，动态条件下的吸附容量小于静态条件。
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| 关 键 词： | 重金属离子去除 胺基接枝改性介孔材料 吸附 等温线 动态吸附 |
Purification Research on Low-level Radioactive Wastewater by Amine-functionalized MCM-41 |
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| Authors: | YAO Qing-xu JIA Ming-chun MEN Jin-feng |
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| Affiliation: | (College of Naval Architecture and Power, Naval Univ. of Engineering, Wuhan 430033, China) |
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| Abstract: | Amino functionalized mesoporous silica gel was synthesized, characterized and used as adsorbents for low-lev- el radioactive wastewater. The adsorption capacities were investigated with different contact time and pH value. Three ad- sorption isotherms were compared each other, which can be described by the Sips model, and the maximum adsorption capacities of Co2＋ and Mn2＋ were 0.377mmol/g and 0.384mmol/g, respectively. The competitive experiments showed that the affinity between adsorbents and metal ions is different. The adsorbents retained Co2＋ much easier. Dynamic adsorption experiments were also carried out in a fixed bed column which suffered a decrease of adsorption capacity than statistic experiments. |
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| Keywords: | heavy metal ions removal amino fhnctionalized mesoporous silica gel adsorption isotherm dynamic |
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