| 活性炭/CoFe2O4复合物的制备及其对亚甲基蓝的吸附性能 |
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| 引用本文： | 艾伦弘,蒋静,唐娟.活性炭/CoFe2O4复合物的制备及其对亚甲基蓝的吸附性能[J].应用化学,2010,27(6):710-715. |
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| 作者姓名： | 艾伦弘 蒋静 唐娟 |
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| 作者单位： | (化学应用与污染控制技术四川省重点实验室,西华师范大学化学化工学院 南充 637002) |
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| 基金项目： | 西华师范大学科研启动基金资助项目(07B005) |
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| 摘 要： | 通过低温回流法制备了具有磁分离响应的活性碳(AC)与CoFe2O4的复合物AC/CoFe2O4（MAC）。采用批式吸附实验法对MAC吸附溶液中偶氮染料亚甲基蓝（MB）的吸附动力学过程及吸附平衡进行了研究，考察了溶液初始pH值对MAC吸附MB的影响。结果表明，MAC吸附MB的过程很快，20 min几乎达到平衡。MAC吸附MB过程可以用准二级动力学方程描述。等温吸附过程服从Langmuir方程，MAC对MB的饱和吸附容量为120.48 mg/g。在较低pH值时，MB吸附量较小。随着pH值的升高，MAC对MB的吸附量增大。
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| 关 键 词： | 活性碳(AC) CoFe2O4 吸附 亚甲基蓝 |
| 收稿时间： | 2009-07-17 |
| 修稿时间： | 2009-10-11 |
Preparation of Activated Carbon/CoFe2O4 Composites andIts Adsorption Properties of Methylene Blue |
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| AI Lun-Hong,JIANG Jing,TANG Juan.Preparation of Activated Carbon/CoFe2O4 Composites andIts Adsorption Properties of Methylene Blue[J].Chinese Journal of Applied Chemistry,2010,27(6):710-715. |
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| Authors: | AI Lun-Hong JIANG Jing TANG Juan |
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| Institution: | (Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province,College of ;
Chemistry and Chemical Engineering,China West Normal University,Nanchong 637002) |
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| Abstract: | Activated carbon/CoFe2O4 composite(AC/CoFe2O4, MAC) with magnetic seperation performance was synthesized via a low-temperature refluxing route. Batch experiments were carried out to investigate the adsorption kinetics and equilibrium of methylene blue(MB) onto MAC. The effect of initial pH value on MB adsorbed onto MAC was evaluated. It was found that the adsorption of MB onto MAC was a very rapid process, reaching to ethe quilibrium within 20 min. The pseudo second order rate equation could describe the adsorption kinetics of the MB onto MAC. The equilibrium data could be fitted well with the Langmuir equation. The saturated adsorption capacity obtained from the Langmuir equation was 120.48 mg/g. At lower pH values, adsorption capacity of MAC for MB was small, whereas it increased with increasing pH value. |
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