| Removal of Methyl Violet from aqueous solutions using poly （acrylic acid.co-acrylamide）/attapulgite composite |
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| 作者姓名： | Yongsheng Wang Li Zeng Xuefeng Ren Hai Song Aiqin Wang |
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| 作者单位： | Yongsheng Wang,Li Zeng,Xuefeng Ren,Hai Song(Key Laboratory of Resources and Environment Chemistry of West China, Hexi University, Zhangye 734000, China);Aiqin Wang(Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China) |
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| 基金项目： | supported by the Western Action Project of Chinese Academy of Science (No.KGCX2-YW-501);;the Taihu Project of Jiangsu Provincial Science and Technology Office (No.BS2007118,BE2008087);;the Key Laboratory of Resources and Environment Chemistry of West China,Hexi University(No.XZ0606) |
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| 摘 要： | The adsorption of Methyl Violet (MV) cationic dye from aqueous solution was carried out by using crosslinked poly (acrylic acid-co-acrylamide)/attapulgite (Poly(AA-co-AM)/ATP) composite as adsorbent. The factors influencing adsorption capacity of the composite such as pH, concentration of the dye, temperature, contact time, adsorbent dosage, ionic strength and surfactant were systematically investigated. The equilibrium data fitted very well to the Langmuir isotherm and the maximum adsorption capacity reached 1194 mg/g at 30°C. The thermodynamic parameters including G0, △H0 and △S 0 for the adsorption processes of MV on the composite were also calculated, and the negative △H0 and △G0 confirmed that the adsorption process was exothermic and spontaneous. The kinetic studies showed that the adsorption process was consistent with the pseudo second-order kinetic model and the desorption studies revealed that the regeneration of the composite adsorbent can be easily achieved.
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| 关 键 词： | 复合材料 凹凸棒石 丙烯酸 甲基紫 水溶液 丙烯酰胺 Langmuir吸附 复合吸附剂 |
| 收稿时间： | 16 March 2009 |
| 修稿时间： | 5 May 2009 |
Removal of Methyl Violet from aqueous solutions using poly
(acrylic acid-co-acrylamide)/attapulgite composite |
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| Yongsheng Wang,Li Zeng,Xuefeng Ren,Hai Song,Aiqin Wang.Removal of Methyl Violet from aqueous solutions using poly
(acrylic acid-co-acrylamide)/attapulgite composite[J].Journal of Environmental Sciences,2010,22(1):7-14. |
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| Authors: | Yongsheng Wang Li Zeng Xuefeng Ren Hai Song and Aiqin Wang |
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| Institution: | 1. Key Laboratory of Resources and Environment Chemistry of West China, Hexi University, Zhangye 734000, China
2. Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | The adsorption of Methyl Violet (MV) cationic dye from aqueous solution was carried out by using crosslinked poly (acrylic acid-co-acrylamide)/attapulgite (Poly(AA-co-AM)/ATP) composite as adsorbent. The factors influencing adsorption capacity of the composite such as pH, concentration of the dye, temperature, contact time, adsorbent dosage, ionic strength and surfactant were systematically investigated. The equilibrium data fitted very well to the Langmuir isotherm and the maximum adsorption capacity reach... |
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| Keywords: | composite Methyl Violet adsorption kinetics isotherm |
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