| 钛插层蒙脱石对Zn2+的吸附研究 |
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| 引用本文： | 赵徐霞,庹必阳,韩朗,龙森.钛插层蒙脱石对Zn2+的吸附研究[J].矿冶工程,2018,38(6):151-155. |
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| 作者姓名： | 赵徐霞 庹必阳 韩朗 龙森 |
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| 作者单位： | 1.贵州大学 矿业学院,贵州 贵阳 550025;
2.贵州省非金属矿产资源综合利用重点实验室,贵州 贵阳 550025;
3.喀斯特地区优势矿产资源高效利用国家地方联合工程实验室,贵州 贵阳 550025 |
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| 基金项目： | 国家自然科学基金(51464007);
贵州省科技厅联合基金(黔科合LH字[2015]7684);
贵州大学博士基金(贵大人基合字(2013)51号) |
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| 摘 要： | 为了去除废水中Zn2+,以提纯钠化蒙脱石(Na-mt)为原料,采用溶胶凝胶法将Ti4+插层进入Na-mt层间制备钛插层蒙脱石(Ti-Imt)材料。XRD、SEM及表面积分析表明Ti-Imt的晶面间距增大到2.94 nm,具有较大的比表面积,片层之间存在着较大且形状不均匀的空隙结构。采用Ti-Imt对Zn2+进行吸附,升温有利于吸附; pH值为6时吸附性能最佳,吸附平衡时间为60 min,饱和吸附量为38.47 mg/g,Zn2+去除率达到96.18%。
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| 关 键 词： | 钛插层蒙脱石 锌离子 吸附 |
| 收稿时间： | 2018-06-25 |
Adsorption of Zn2+ on Titanium Intercalated Montmorillonite |
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| ZHAO Xu-xia,TUO Bi-yang,HAN Lang,LONG Sen.Adsorption of Zn2+ on Titanium Intercalated Montmorillonite[J].Mining and Metallurgical Engineering,2018,38(6):151-155. |
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| Authors: | ZHAO Xu-xia TUO Bi-yang HAN Lang LONG Sen |
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| Affiliation: | 1.School of Mining, Guizhou University, Guiyang 550025, Guizhou, China;
2.Guizhou Key Laboratory of Comprehensive Utilization of Non-metallic Mineral Resources, Guiyang 550025, Guizhou, China;
3.National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas, Guiyang 550025, Guizhou, China |
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| Abstract: | In order to remove Zn2+ from wastewater, a kind of purified natrified montmorillonite (Na-mt) was taken as the raw material and Ti4+ intercalation was added into Na-mt layer by using sol-gel method to prepare titanium intercalated montmorillonite (Ti-Imt). Analysis with XRD and SEM, as well as surface area analysis showed that with the interplanar spacing of Ti-Imt increased to 2.94 nm, the material had a large specific surface area and a large gap structure between the lamellae. Test on the adsorption of Zn2+ with Ti-Imt showed higher temperature was favorable for adsorption. An optimal adsorption effect was obtained at a pH value of 6, the saturated adsorption capacity of Ti-Imt reached 38.47 mg/g and Zn2+ removal rate reached 96.18% after an adsorption equilibrium time of 60 min. |
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| Keywords: | titanium intercalated montmorillonite zinc ion adsorption |
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