| 不同粒度煤粉对Ni2+的吸附特性 |
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| 引用本文： | 刘转年,周安宁,金奇庭.不同粒度煤粉对Ni2+的吸附特性[J].煤炭学报,2005,30(5):627-631. |
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| 作者姓名： | 刘转年 周安宁 金奇庭 |
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| 作者单位： | 西安科技大学 地质与环境工程系，陕西 西安 710054 |
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| 基金项目： | 陕西省自然科学基金资助项目（2001C37）. |
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| 摘 要： | 通过筛分和高能球磨得到不同粒度的煤粉，研究了粒度变化对水溶液中Ni2+的吸附性能的影响和吸附机理.结果表明：不同粒度煤粉对Ni2+的吸附符合二级吸附动力学，其吸附过程由孔隙内扩散控制，求出了有效扩散系数.得出不同粒度煤粉对Ni2+的吸附量随粒径的减小呈指数关系增加；粒径为9.30，4.28和4.82 μm煤粉对Ni2+的吸附符合Freundlich吸附等温式.
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| 关 键 词： | 不同粒度煤粉 Ni2+ 吸附特性 |
| 文章编号： | 0253-9993（2005）05-0627-05 |
| 收稿时间： | 2004-12-29 |
| 修稿时间： | 2004年12月29 |
Adsorption properties of Ni2+for different granularity coal powders |
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| LIU Zhuan-nian,ZHOU An-ning,JIN Qi-ting.Adsorption properties of Ni2+for different granularity coal powders[J].Journal of China Coal Society,2005,30(5):627-631. |
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| Authors: | LIU Zhuan-nian ZHOU An-ning JIN Qi-ting |
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| Affiliation: | LIU Zhuan-nian~ |
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| Abstract: | Different granularity coal powders were obtained by sieving and high energy ball milling，the adsorption mechanism and effect of granularity variety on Ni2+ adsorption were studied.The result shows that the kinetic of Ni2+ for coal powders fit second order kinetic model， the adsorption process is controlled by pore diffusion， the effective diffusion coefficient were calculated.Ni2+ adsorption capacity exponentially increased when coal powders diameter decreased.The Ni2+ adsorption equilibrium of diameter 9.30，4.28 and 4.82 μm coal powders can be described in terms of Freundlich isotherm. |
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| Keywords: | different granularity coal powders Ni~(2+) adsorption properties |
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