| 改性超细煤粉对甲基橙的吸附行为研究 |
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| 引用本文： | 刘转年,周安宁,王贵荣,赵晓光.改性超细煤粉对甲基橙的吸附行为研究[J].中国化学工程学报,2009,17(6):942-948. |
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| 作者姓名： | 刘转年 周安宁 王贵荣 赵晓光 |
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| 作者单位： | 1. College of Geology and Environment, Xi'an University of Science & Technology, Xi'an 710054, China;2. College of Chemistry and Chemical Engineering, Xi'an University of Science & Technology, Xi'an 710054, China |
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| 基金项目： | the National Science Foundation for Post Doctoral Scientists of China，Scientific and Technological Key Project of Shaanxi Province，Industrialization Project of Shaanxi Provincial Department of Education |
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| 摘 要： | The adsorption of methyl orange onto ultrafine coal powder (UCP) and modified ultrafine coal powder (MUCP) from aqueous solutions were studied, in which the influence of contact time, dosage, temperature, pH, and methyl orange concentration in the solution were investigated. The adsorption kinetics of methyl orange by UCP and MUCP can be described by the Lagergren first-order and pseudo second-order kinetic models, respectively. The adsorption isotherms of methyl orange onto MUCP at 303, 313 and 323 K follow the Freundlich and Langmuir isotherm equation. Values of G0 for methyl orange adsorption onto MUCP are -22.55, -23.10 and -23.79 kJ•mol－1 at 303, 313, and 323 K, respectively. The values of ΔH0 and ΔS0 are -3.74 kJ•mol－1 and 61.99 J•mol－1, respectively. The adsorption process is spontaneous and exothermic.
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| 关 键 词： | ultrafine coal powder methyl orange adsorption wastewater treatment |
| 收稿时间： | 2008-12-14 |
| 修稿时间： | 2009-7-7
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Adsorption Behavior of Methyl Orange onto Modified Ultrafine Coal Powder |
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| LIU Zhuannian,ZHOU Anning,WANG Guirong,ZHAO Xiaoguang.Adsorption Behavior of Methyl Orange onto Modified Ultrafine Coal Powder[J].Chinese Journal of Chemical Engineering,2009,17(6):942-948. |
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| Authors: | LIU Zhuannian ZHOU Anning WANG Guirong ZHAO Xiaoguang |
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| Affiliation: | 1. College of Geology and Environment, Xi'an University of Science & Technology, Xi'an 710054, China;2. College of Chemistry and Chemical Engineering, Xi'an University of Science & Technology, Xi'an 710054, China |
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| Abstract: | The adsorption of methyl orange onto ultrafine coal powder(UCP) and modified ultrafine coal powder(MUCP) from aqueous solutions were studied,in which the influence of contact time,dosage,temperature,pH,and methyl orange concentration in the solution were investigated.The adsorption kinetics of methyl orange by UCP and MUCP can be described by the Lagergren first-order and pseudo second-order kinetic models,respectively.The adsorption isotherms of methyl orange onto MUCP at 303,313 and 323 K follow the Freundlich and Langmuir isotherm equation.Values of ΔG0 for methyl orange adsorption onto MUCP are -22.55,-23.10 and -23.79 kJ·mol-1 at 303,313,and 323 K,respectively.The values of ΔH0 and ΔS0 are Δ3.74 kJ·mol-1 and 61.99 J·mol-1,respectively.The adsorption process is spontaneous and exothermic. |
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| Keywords: | ultrafine coal powder methyl orange adsorption wastewater treatment
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