| 层状氢氧化镁铝焙烧产物对SCN-的吸附性能 |
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| 引用本文： | 宋卫得,王海增,郭鲁钢,李冬梅,邢坤.层状氢氧化镁铝焙烧产物对SCN-的吸附性能[J].化学研究,2007,18(3):75-79. |
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| 作者姓名： | 宋卫得 王海增 郭鲁钢 李冬梅 邢坤 |
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| 作者单位： | 中国海洋大学,化学化工学院,山东,青岛,266100;中国海洋大学,化学化工学院,山东,青岛,266100;中国海洋大学,化学化工学院,山东,青岛,266100;中国海洋大学,化学化工学院,山东,青岛,266100;中国海洋大学,化学化工学院,山东,青岛,266100 |
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| 基金项目： | 国家自然科学基金资助项目(20477041) |
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| 摘 要： | 研究了层状氢氧化镁铝焙烧产物对SCN-的吸附行为,考察了焙烧温度、吸附温度、时间、pH值等因素对吸附的影响.在SCN-初始浓度为25 mg/L,温度为40℃,焙烧物投加量为2 g/L,pH值为6的条件下,4 h达到吸附平衡,SCN-脱除率可达96.91%.吸附过程符合Langmu ir等温方程式,主要是单分子层的吸热吸附.
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| 关 键 词： | SCN- 层状氢氧化镁铝 焙烧 吸附 脱除 |
| 文章编号： | 1008-1011（2007）03-0075-05 |
| 修稿时间： | 2007-03-22 |
Adsorption of Calcined Mg/Al Layered Double Hydroxides for Thiocyanate Ion |
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| SONG Wei-de,WANG Hai-zeng,GUO Lu-gang,LI Dong-mei,XING Kun.Adsorption of Calcined Mg/Al Layered Double Hydroxides for Thiocyanate Ion[J].Chemical Research,2007,18(3):75-79. |
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| Authors: | SONG Wei-de WANG Hai-zeng GUO Lu-gang LI Dong-mei XING Kun |
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| Institution: | College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, Shandong, China |
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| Abstract: | The adsorption performance of calcined Mg/Al layered double hydroxides for thiocyanate ion was studied.The effects of calcined temperature of Mg/Al layered double hydroxides and adsorption temperature,adsorption time,pH value were investigated.The removal rate of SCN-is 96.91 %,when original concentration of thiocyanate ion is 25 mg/L,adsorption temperature is 40 ℃,sorbent dosage is 2 g/L,pH value is 6 and adsorption time is 4 h.Equilibrium data were fitted very well to the Langmuir mode in the entire saturation concentration range,indicating that the adsorption was endothermic process and of monomolecular layer. |
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| Keywords: | thiocyanate ion Mg/Al layered double hydroxides calcination adsorption removal |
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