| 凹凸棒石对十八胺吸附的实验研究 |
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| 引用本文： | 胡春联,陈元涛,张炜,王平平,王建.凹凸棒石对十八胺吸附的实验研究[J].环境科学学报,2016,36(4):1199-1204. |
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| 作者姓名： | 胡春联 陈元涛 张炜 王平平 王建 |
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| 作者单位： | 青海师范大学化学系, 西宁 810008,青海师范大学化学系, 西宁 810008,青海师范大学化学系, 西宁 810008,青海师范大学化学系, 西宁 810008,青海师范大学化学系, 西宁 810008 |
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| 基金项目： | 国家自然科学基金(No.20967006);教育部"新世纪优秀人才"支持计划(No.NCET-07-0476) |
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| 摘 要： | 利用天然凹凸棒石对难降解的十八胺进行吸附研究,并对天然凹凸棒石粘土结构和性质进行分析表征,重点研究了固液比、时间、p H值和温度对十八胺在凹凸棒石上吸附的影响.结果表明,十八胺在凹凸棒石上的吸附受p H和温度的影响明显,并且符合准二级动力学方程和Langmuir吸附等温线,由Langmuir吸附等温线(293 K)得出的饱和吸附容量为143.92 mg·g-1.凹凸棒石作为天然粘土有望成为处理十八胺的理想吸附材料.
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| 关 键 词： | 凹凸棒 吸附 十八胺 动力学 热力学 |
| 收稿时间： | 2015/5/13 0:00:00 |
| 修稿时间： | 2015/6/13 0:00:00 |
Adsorption performance of octadecylamine on attapulgite |
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| HU Chunlian,CHEN Yuantao,ZHANG Wei,WANG Pingping and WANG Jian.Adsorption performance of octadecylamine on attapulgite[J].Acta Scientiae Circumstantiae,2016,36(4):1199-1204. |
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| Authors: | HU Chunlian CHEN Yuantao ZHANG Wei WANG Pingping and WANG Jian |
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| Institution: | Department of Chemistry, Qinghai Normal University, Xining 810008,Department of Chemistry, Qinghai Normal University, Xining 810008,Department of Chemistry, Qinghai Normal University, Xining 810008,Department of Chemistry, Qinghai Normal University, Xining 810008 and Department of Chemistry, Qinghai Normal University, Xining 810008 |
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| Abstract: | Herein, the process of adsorption of non-biodegradable octadecylamine by native attapulgite was studied. The structure and physi-chemical properties of attapulgite were characterized and the adsorption performance of octadecylamine was investigated under different material liquid ratio, time, pH and temperature conditions. The results show that the adsorption of octadecylamine on attapulgite is strongly dependent on pH and temperature, and the adsorption kinetics are fit for the Lagrange pseudo-second-order kinetic model and the Langmuir model. The adsorption capacity is 143.92 mg·g-1 at 293 K from Langmuir model. The results reveal that the attapulgite can be a prospective sorbent for pre-concentration of octadecylamine from aqueous solutions in environment. |
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| Keywords: | attapulgite adsorption octadecylamine kinetics thermodynamics |
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