研究报告
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
凹凸棒石对十八胺吸附的实验研究
- Adsorption performance of octadecylamine on attapulgite
- 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)
- 作者
- 单位
- 胡春联
- 青海师范大学化学系, 西宁 810008
- 陈元涛
- 青海师范大学化学系, 西宁 810008
- 张炜
- 青海师范大学化学系, 西宁 810008
- 王平平
- 青海师范大学化学系, 西宁 810008
- 王建
- 青海师范大学化学系, 西宁 810008
- 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、pH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pH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(293K)得出的饱和吸附容量为143.92mg·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.
- 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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