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《Journal of China West Normal University(Natural Sciences Edition)》 2014-01
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Preparation of Organic Montmorillonite with Different Microenvironments and study of Methylene Blue Adsorption

FAN Hong-wei;ZhOU Li-mei;JIANG Xiao-hui;HUANG Qiang;LANG Wen-cheng;Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province,China West Normal University;  
A series of surfactants with different functional groups were prepared and used as modifier for montmorillonite( MMT). The modified montmorillonites were characterized by XRD and TG. The results showed that three different microenvironment organic montmorillonite which were MMT-12-N( CH3)2,MMT-12-OH and MMT-12-CH3 were successfully prepared. The effects of solution pH,contact time and dye concentration on the MB adsorption onto the three organic montmorillonite with different microenvironment were investigated. Results showed that adsorption capacity of MMT-12-CH3was large and less influenced by the pH. MMT-12-N( CH3)2and MMT-12-OH had better adsorption capacity in the pH range of 5- 9 and 5-8 respectively. The adsorption of MB fitted pseudo-second-order kinetics,and the adsorption isotherm were consistent with the Langmuir model,under the same conditions while the order of adsorption capacities was: MMT-12-CH3 MMT-12-OH MMT-12-N( CH3)2.
【Fund】: 国家自然科学基金项目(21303139);; 四川省教育厅重点项目(11ZA035);; 四川省化学合成与污染控制重点实验室开放项目(CSPC2010-3)
【CateGory Index】: TQ424
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