| 快速高效去除微囊藻的GO/QPEI复合纳米材料 |
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| 引用本文： | 李洁,肖琳. 快速高效去除微囊藻的GO/QPEI复合纳米材料[J]. 环境科学, 2016, 37(10): 3850-3857 |
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| 作者姓名： | 李洁 肖琳 |
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| 作者单位： | 南京大学环境学院, 污染控制与资源化国家重点实验室, 南京 210023,南京大学环境学院, 污染控制与资源化国家重点实验室, 南京 210023 |
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| 基金项目： | 国家水体污染控制与治理科技重大专项（2012ZX07101006） |
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| 摘 要： | 本研究合成了一种新型高效的去除铜绿微囊藻(Microcystis aeruginosa)的氧化石墨烯/季铵盐聚乙烯亚胺(GO/QPEI)纳米复合材料.GO/QPEI在pH为4~10的条件下都具有高效去除M.aeruginosa的能力,其去除能力在2 min内可达96%以上.GO/QPEI对微囊藻的吸附更符合Freundlich方程,最大吸附量为5.58×1011cells·mg-1.吸附动力学表明GO/QPEI的假二级吸附反应.GO纳米片和QPEI的协同效应是其高效去除微囊藻的主要机制.
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| 关 键 词： | 氧化石墨烯纳米复合材料 季铵盐聚乙烯 快速去除 铜绿微囊藻 |
| 收稿时间： | 2016-03-09 |
| 修稿时间： | 2016-05-05 |
GO/QPEI Nanocomposite for Fast and High-capacity Removal of M. Aeruginosa |
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| LI Jie and XIAO Lin. GO/QPEI Nanocomposite for Fast and High-capacity Removal of M. Aeruginosa[J]. Chinese Journal of Environmental Science, 2016, 37(10): 3850-3857 |
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| Authors: | LI Jie and XIAO Lin |
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| Affiliation: | State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment,Nanjing University,Nanjing 210023,China and State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment,Nanjing University,Nanjing 210023,China |
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| Abstract: | This work described the synthesis of graphene oxide/quanternary ammonium polyethylenimine (GO/QPEI) nanocomposite as a novel and highly efficient Microcystis aeruginosa (M. aeruginosa) removal material. From pH 4 to 10, the removal efficiency of M. aeruginosa by GO/QPEI in 2 min was over 96%. The adsorption isotherm fitted the Freundlich model better and the maximum capacity of GO/QPEI was 5.58×1011 cells·mg-1. The kinetic data supported a pseudo-second-order adsorption behavior for GO/QPEI. The enhanced removal of M. aeruginosa could be attributed to the synergistic effect of GO nanosheet and the grafted QPEI. |
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| Keywords: | graphene oxide nanocomposite quanternary ammonium polyethylenimine fast removal M. aeruginosa |
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