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| Adsorptive property of Cu^2＋-loaded montmorillonite clays for Escherichia coli K_（88） in vitro | |
| 作者姓名： | Tong Guo Shoujun Cao Rui Su Zhiqiang Li Ping Hu Zirong Xu |
| 作者单位： | Beijing Vocational College of Agriculture, Beijing 102442, China;College of Animal Science，the Key Laboratory of Molecular Animal Nutrition Ministry of Education Zhejiang University, Hangzhou 310029, China;Beijing Vocational College of Agriculture, Beijing 102442, China;College of Chemical Engineer and Environment, North University of China, Taiyuan 030051, China;College Animal Science and Technology, Institute of Grassland Science, China Agricultural University, Beijing 100093, China;Beijing Vocational College of Agriculture, Beijing 102442, China;College of Animal Science，the Key Laboratory of Molecular Animal Nutrition Ministry of Education Zhejiang University, Hangzhou 310029, China |
| 基金项目： | supported by the National Natural Science Foundation of China (No.30471255); the Program for New Century Excellent Talents in University(No.NCET-06-0913) |
| 摘 要： | The Cu2+-loaded montmorillonite clays (MMT-Cu) may be a good material for the adsorbed and eliminated pathogenic bacteria from aqueous solution. |
| 关 键 词： | 蒙脱石粘土 铜表面 吸附性能 大肠杆菌 扫描电子显微镜 财产 体外 zeta电位 |
| 收稿时间： | 21 December 2010 |
| 修稿时间： | 2011/5/20 0:00:00 |
Adsorptive property of Cu2+-loaded montmorillonite clays for Escherichia coli K88 in vitro |
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| Tong Guo,Shoujun Cao,Rui Su,Zhiqiang Li,Ping Hu,Zirong Xu.Adsorptive property of Cu2+-loaded montmorillonite clays for Escherichia coli K88 in vitro[J].Journal of Environmental Sciences,2011,23(11):1808-1815. | |
| Authors: | Tong Guo Shoujun Cao Rui Su Zhiqiang Li Ping Hu and Zirong Xu |
| Institution: | 1. Beijing Vocational College of Agriculture, Beijing 102442, China.; College of Animal Sciencefthe Key Laboratory of Molecular Animal Nutrition Ministry of Education Zhejiang University, Hangzhou 310029, China 2. Beijing Vocational College of Agriculture, Beijing 102442, China 3. College of Chemical Engineer and Environment, North University of China, Taiyuan 030051, China 4. College Animal Science and Technology, Institute of Grassland Science, China Agricultural University, Beijing 100093, China 5. Beijing Vocational College of Agriculture, Beijing 102442, China. 6. College of Animal Sciencefthe Key Laboratory of Molecular Animal Nutrition Ministry of Education Zhejiang University, Hangzhou 310029, China |
| Abstract: | The adsorption properties of Cu2+-loaded montmorillonite clays (MMT-Cu) for Escherichia coli K88 as a function of time, bacteria concentrations, pH, ionic strength and temperature were investigated. The results showed that the bacteria adsorption onto MMT-Cu surface reached equilibrium after 90 min. The percentages of E. coli K88 adsorbed onto the surfaces of MMT-Cu and montmorillonite clays (MMT) at equilibrium were 88.9% and 56.5%, respectively. Scanning electron microscopy revealed that a lot of E. coli K88 adhered to the surface of MMT-Cu. The zeta potential of MMT-Cu was relatively high as compared to that of MMT. The adsorptive ability of MMT-Cu for E. coli K88 was higher than that of MMT (P < 0.05). Moreover, pH, ionic strength and temperature produced a strong influence on the extent of E. coli K88 adsorption to surface of MMT-Cu and MMT. The mechanism of adsorption of E. coli onto MMT-Cu may involve electrostatic attraction and physiochemical properties of bacterial cell walls and minerals surfaces. |
| Keywords: | Cu2+-loaded montmorillonite clays adsorption Escherichia coli K88 |
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