Adsorption kinetics and equilibrium of copper from ethanol fuel on silica-gel functionalized with amino-terminated dendrimer-like polyamidoamine polymers
Qu, Rongjun1; Sun, Changmei1; Ma, Fang1; Cui, Zhenzhong2; Zhang, Ying1; Sun, Xiaoying1; Ji, Chunnuan1; Wang, Chunhua1; Yin, Ping1
发表期刊FUEL
ISSN0016-2361
2012-02-01
卷号92期号:1页码:204-210
关键词Silica-gel Functionalized With Polyamidoamine Copper Ion Ethanol Solution Kinetics Equilibrium
研究领域Energy & Fuels ; Engineering
DOI10.1016/j.fuel.2011.07.040
产权排序

[Qu, Rongjun; Sun, Changmei; Ma, Fang; Zhang, Ying; Sun, Xiaoying; Ji, Chunnuan; Wang, Chunhua; Yin, Ping] Ludong Univ, Sch Chem & Mat Sci, Yantai 264025, Shandong, Peoples R China; [Cui, Zhenzhong] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China

英文摘要

The adsorption kinetics and equilibrium of silica-gel functionalized with amino-terminated dendrimer-like polyamidoamine ( PAMAM) polymers SiO(2)-G1.0, SiO(2)-G2.0 and SiO(2)-G3.0 for Cu(2+) in ethanol fuel were investigated by using batch method. The results indicated that the all the adsorptions of the three adsorbents followed well the pseudo second-order model. The adsorption isotherms were fitted by Langmuir model, Freundlich model and Dubinin-Radushkevich (D-R) model. The results showed that Langmuir model was more suitable to describe the equilibrium data than the Freundlich model. From the D-R isotherm model, the mean free energy E calculated of the three adsorbents showed that the adsorptions were taken place by physical processes. Thermodynamic parameters, Delta G(0), Delta H(0) and Delta S(0) indicated the Cu(2+) adsorption to be endothermic and spontaneous with decreased randomness at the solid-solution interface, resulting in their higher adsorption capacities at higher temperature. The effect of generation number of PAMAM polymers loaded on silica-gel, contact time, initial concentration and temperatures on the adsorption capabilities were studied in detail. Moreover, the adsorption mechanism of copper from ethanol fuel was also presumed.;The adsorption kinetics and equilibrium of silica-gel functionalized with amino-terminated dendrimer-like polyamidoamine ( PAMAM) polymers SiO2-G1.0, SiO2-G2.0 and SiO2-G3.0 for Cu2+ in ethanol fuel were investigated by using batch method. The results indicated that the all the adsorptions of the three adsorbents followed well the pseudo second-order model. The adsorption isotherms were fitted by Langmuir model, Freundlich model and Dubinin-Radushkevich (D-R) model. The results showed that Langmuir model was more suitable to describe the equilibrium data than the Freundlich model. From the D-R isotherm model, the mean free energy E calculated of the three adsorbents showed that the adsorptions were taken place by physical processes. Thermodynamic parameters, Delta G(0), Delta H-0 and Delta S-0 indicated the Cu2+ adsorption to be endothermic and spontaneous with decreased randomness at the solid-solution interface, resulting in their higher adsorption capacities at higher temperature. The effect of generation number of PAMAM polymers loaded on silica-gel, contact time, initial concentration and temperatures on the adsorption capabilities were studied in detail. Moreover, the adsorption mechanism of copper from ethanol fuel was also presumed. (C) 2011 Elsevier Ltd. All rights reserved.

文章类型Article
资助机构National Natural Science Foundation of China[51073075] ; Natural Science Foundation of Shandong Province[2009ZRB01463, 2008BS04011] ; Nature Science Foundation of Ludong University[08-CXA001, 032912, 042920] ; Ludong University[YD05001, Ycx0612]
收录类别SCI
语种英语
关键词[WOS]ATOMIC-ABSORPTION-SPECTROMETRY ; PLASMA-MASS SPECTROMETRY ; METAL-IONS ; SI ENGINE ; AQUEOUS-SOLUTIONS ; ACTIVATED CARBON ; GASOLINE ; PRECONCENTRATION ; SORPTION ; CU
研究领域[WOS]Energy & Fuels ; Engineering
WOS记录号WOS:000297572600026
引用统计
被引频次:52[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/5499
专题中国科学院烟台海岸带研究所知识产出
作者单位1.Ludong Univ, Sch Chem & Mat Sci, Yantai 264025, Shandong, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Shandong, Peoples R China
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Qu, Rongjun,Sun, Changmei,Ma, Fang,et al. Adsorption kinetics and equilibrium of copper from ethanol fuel on silica-gel functionalized with amino-terminated dendrimer-like polyamidoamine polymers[J]. FUEL,2012,92(1):204-210.
APA Qu, Rongjun.,Sun, Changmei.,Ma, Fang.,Cui, Zhenzhong.,Zhang, Ying.,...&Yin, Ping.(2012).Adsorption kinetics and equilibrium of copper from ethanol fuel on silica-gel functionalized with amino-terminated dendrimer-like polyamidoamine polymers.FUEL,92(1),204-210.
MLA Qu, Rongjun,et al."Adsorption kinetics and equilibrium of copper from ethanol fuel on silica-gel functionalized with amino-terminated dendrimer-like polyamidoamine polymers".FUEL 92.1(2012):204-210.
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