| 焙烧层状氢氧化镁铝对水中氟离子的吸附性能 |
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| 引用本文： | 李冬梅,王海增,王立秋,赵正鹏.焙烧层状氢氧化镁铝对水中氟离子的吸附性能[J].离子交换与吸附,2007,23(2):103-111. |
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| 作者姓名： | 李冬梅 王海增 王立秋 赵正鹏 |
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| 作者单位： | 中国海洋大学化学化工学院,青岛,266003 |
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| 摘 要： | 研究了焙烧层状氢氧化镁铝(CLDH)对水中氟离子的吸附性能,考察了焙烧温度、吸附时间、吸附剂用量、溶液pH值等条件对吸附的影响.发现在较宽的pH(5.5～9.5)值范围内,CLDH对水中氟离子具有良好的吸附能力,室温下0.2gCLDH可将50mL浓度为15mg/L氟离子溶液处理为符合含氟标准的饮用水.吸附平衡符合Langmuir方程,在60min内达到饱和吸附,室温下饱和吸附量为22.64 mg/g.吸附饱和后的CLDH焙烧再生,循环使用5次后饱和吸附量为10.37 mg/g.
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| 关 键 词： | 层状氢氧化镁铝 吸附 氟离子 焙烧 |
| 文章编号： | 1001-5493(2007)02-0103-09 |
| 修稿时间： | 2006-07-10 |
STUDY ON THE EFFECT OF ADSORBING FLUORINE ANION BY LAYERED DOUBLE HYDROXIDES |
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| LI Dongmei,WANG Haizeng,WANG Liqiu,ZHAO Zhengpeng.STUDY ON THE EFFECT OF ADSORBING FLUORINE ANION BY LAYERED DOUBLE HYDROXIDES[J].Ion Exchange and Adsorption,2007,23(2):103-111. |
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| Authors: | LI Dongmei WANG Haizeng WANG Liqiu ZHAO Zhengpeng |
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| Institution: | College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China |
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| Abstract: | The adsorption of fluorine in water by Calcined Layered Double Hydroxides was studied. The effects of calcined temperature,adsorption time,sorbent dosage,pH value on adsorption were investigated. The experimental results showed that the calcined product had an excellent performance in adsorbing fluorine, at a wide pH (5.5~9.5) value range, it decreased the concentration of F- from15mg/L to under 1mg/L with 4g/L of Calcined Layered Double Hydroxides. The adsorption happened in 60min and was in conformity with the Langmuir isotherm type equation, the adsorption capacity was 22.64mg/g. The adsorption capacity reduced to 10.37mg/g when they were regenerated by thermal decomposition method. |
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| Keywords: | Layered Double Hydroxides Adsorption Fluorine anion Calcination |
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