东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (1): 73-76.DOI: 10.12068/j.issn.1005-3026.2015.01.016

• 材料与冶金 • 上一篇    下一篇

亚甲基蓝在CaTiO3上的吸附动力学

韩冲, 杨合, 薛向欣   

  1. (东北大学 材料与冶金学院, 辽宁 沈阳 110819)
  • 收稿日期:2013-12-16 修回日期:2013-12-16 出版日期:2015-01-15 发布日期:2014-11-07
  • 通讯作者: 韩冲
  • 作者简介:韩冲(1985-),男,河北唐山人,东北大学讲师,博士; 薛向欣(1954-),男,辽宁沈阳人,东北大学教授,博士生导师.
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N130302004); 国家自然科学基金资助项目(51090384); 国家高技术研究发展计划项目(2012AA062304); 国家重点基础研究发展计划项目(2012CBA01205).

Adsorption Kinetics of Methylene Blue on CaTiO3

HAN Chong, YANG He, XUE Xiang-xin   

  1. School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China.
  • Received:2013-12-16 Revised:2013-12-16 Online:2015-01-15 Published:2014-11-07
  • Contact: HAN Chong
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摘要: 详细考察了CaTiO3投加量、溶液pH值以及亚甲基蓝(methylene blue,MB)初始质量浓度对MB在CaTiO3上的平衡吸附率的影响,分析了MB在CaTiO3上的吸附等温式.结果表明,CaTiO3投加量对MB的平衡吸附率影响很小.溶液pH值为7时MB的平衡吸附率高于溶液pH值为4和10时MB的平衡吸附率,说明中性条件有利于MB在CaTiO3上的吸附.MB在CaTiO3上的平衡吸附率随MB初始质量浓度增加而显著降低.MB在CaTiO3上的吸附符合Langmuir吸附等温式,MB在CaTiO3上的饱和吸附量为1.64mg/g.

关键词: CaTiO3, 亚甲基蓝, 吸附率, 吸附等温式, 动力学

Abstract: The effects of CaTiO3 dosage, solution pH value,and initial methylene blue (MB) mass concentration on equilibrium adsorption rate of MB on CaTiO3 were experimentally investigated in detail. The adsorption isotherm of MB on CaTiO3 was also discussed. The results showed that CaTiO3 dosage has little effect on equilibrium adsorption rate of MB. The equilibrium adsorption rate of MB on CaTiO3 at the solution pH value of 7 is greater than that at the solution pH values of 4 and 10, suggesting that neutral condition is in favor of the adsorption of MB on CaTiO3. The equilibrium adsorption rate of MB on CaTiO3 decreases significantly with increasing initial mass concentration of MB. The adsorption of MB on CaTiO3 follows the Langmuir adsorption isotherm and the adsorption saturation capacity of MB on CaTiO3 is 1.64mg/g.

Key words: CaTiO3, methylene blue, adsorption rate, adsorption isotherm, kinetics

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