| Mg-Al水滑石及焙烧态样品吸附水中氟离子的研究 |
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| 引用本文： | 王玉莲,廖卫平,刘振波,徐秀峰.Mg-Al水滑石及焙烧态样品吸附水中氟离子的研究[J].烟台大学学报(自然科学与工程版),2009,22(1). |
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| 作者姓名： | 王玉莲 廖卫平 刘振波 徐秀峰 |
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| 作者单位： | 烟台大学,应用催化研究所,山东,烟台,264005 |
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| 基金项目： | 山东省优秀中青年科学家科研奖励基金 |
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| 摘 要： | 用共沉淀法制备了不同配比的Mg-Al水滑石,焙烧后制得焙烧态水滑石,用XRD、TG-DTA等方法进行了表征,考察了水滑石及焙烧产物对水中氟离子的吸附性能,研究了吸附时间、吸附液浓度、吸附液pH值和吸附温度对吸附量的影响,计算得到了有关动力学和热力学参数.结果表明:水滑石对F-的吸附基本符合二级反应速率方程和Langmuir吸附等温式,450℃焙烧态水滑石(nMg/nAl=5)的饱和吸附量达61.32 mg.g-1.当吸附液的pH值超过13时,水滑石的吸附量明显下降.水滑石材料的氟容量显著优于活性炭、氧化铝,但再生水滑石的吸附量不及初次使用的样品.
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| 关 键 词： | Mg-Al水滑石 焙烧态水滑石 氟离子 吸附 |
Adsorption of Fluoride Ion from Aqueous Solution over Fresh and Calcined Mg-Al Hydrotalcites |
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| WANG Yu-lian,LIAO Wei-ping,LIU Zhen-bo,XU Xiu-feng.Adsorption of Fluoride Ion from Aqueous Solution over Fresh and Calcined Mg-Al Hydrotalcites[J].Journal of Yantai University(Natural Science and Engineering edirion),2009,22(1). |
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| Authors: | WANG Yu-lian LIAO Wei-ping LIU Zhen-bo XU Xiu-feng |
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| Affiliation: | WANG Yu-lian; LIAO Wei-ping; LIU Zhen-bo; XU Xiu-feng(Institute of Applied Catalysis; Yantai University; Yantai 264005; China); |
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| Abstract: | Mg-Al hydrotalcites with different Mg/Al mole ratios are prepared by co-precipitation method,calcined at 450 ℃ to get the calcined samples,and characterized using XRD,and TG-DTA techniques.The adsorption capacity of fluoride ion from simulated wastewater on Mg-Al hydrotalcites and calcined samples is measured.We investigate the effect of adsorptive time,fluoride ion concentration,pH value of initial adsorbate solution and adsorptive temperatures on the adsorption capacity of Mg-Al hydrotalcites and calcined... |
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| Keywords: | Mg-Al hydrotalcites calcined hydrotalcites fluoride ion adsorption |
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