| Enhanced adsorption of Methylene Blue from aqueous solution by chitosan-g-poly （acrylic acid）/vermiculite hydrogel composites |
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| 作者姓名： | Yi Liu Yian Zheng Aiqin Wang |
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| 作者单位： | Yi Liu(Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of the Chinese Academy of Sciences, Beijing 10);Yian Zheng,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： | This work was supported by the National Natural Science
Foundation of China (No. 20877077), and the Project
of Jiangsu Provincial Science and Technology O ce (No.
BE2008087). |
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| 摘 要： |
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| 关 键 词： | 复合水凝胶 离子吸附剂 染料溶液 亚甲基蓝 复合材料 壳聚糖 丙烯酸 蛭石 |
| 收稿时间： | 29 June 2009 |
| 修稿时间： | 9/4/2009 12:00:00 AM |
Enhanced adsorption of Methylene Blue from aqueous solution bychitosan-g-poly (acrylic acid)/vermiculite hydrogel composites |
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| Yi Liu,Yian Zheng,Aiqin Wang.Enhanced adsorption of Methylene Blue from aqueous solution bychitosan-g-poly (acrylic acid)/vermiculite hydrogel composites[J].Journal of Environmental Sciences,2010,22(4):486-493. |
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| Authors: | Yi Liu Yian Zheng and Aiqin Wang |
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| Institution: | 1. Center of Eco-material and Green Chemistry, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;Graduate University of the Chinese Academy of Sciences, Beijing 10
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: | A series of chitosan-g-poly (acrylic acid)/vermiculite hydrogel composites were synthesized and used as adsorbents for the
investigation of the e ect of process parameters such as vermiculite content, pH of dye solution, contact time, initial concentration
of dye solution, temperature, ionic strength and concentration of surfactant sodium dodecyl sulfate on the removal of Methylene Blue
(MB) from aqueous solution. The results showed that the adsorption capacity for dye increased with increasing pH, contact time
and initial dye concentration, but decreased with increasing temperature, ionic strength and sodium dodecyl sulfate concentration in
the present of the surfactant. The adsorption kinetics of MB onto the hydrogel composite followed pseudo second-order kinetics and
the adsorption equilibrium data obeyed Langmuir isotherm. By introducing 10 wt.% vermiculite into chitosan-g-poly (acrylic acid)
polymeric network, the obtaining hydrogel composite showed the highest adsorption capacity for MB, and then could be regarded as a
potential adsorbent for cationic dye removal in a wastewater treatment process. |
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| Keywords: | hydrogel composites vermiculite Methylene Blue adsorption kinetics adsorption isotherms |
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