| 白银天然沸石对磷的吸附机理及性能研究 |
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| 引用本文： | 张翠玲,党瑞,贺建栋,魏於娣.白银天然沸石对磷的吸附机理及性能研究[J].环境科学与管理,2014,39(12):104-108. |
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| 作者姓名： | 张翠玲 党瑞 贺建栋 魏於娣 |
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| 作者单位： | 兰州交通大学环境与市政工程学院,甘肃兰州,730070 |
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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“灌区农田退水氮磷污染物末端治理研究”，兰州交通大学大学生科技创新项目 |
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| 摘 要： | 为探明天然沸石对磷的吸附机理,首先利用扫描电镜、X射线衍射、X荧光分析等对甘肃白银产天然沸石进行了表征,然后通过静态实验探讨了吸附时间、磷初始浓度、pH值等因素对沸石除磷性能的影响.研究结果表明：沸石对水溶液中磷的吸附动力学过程符合Pseudo second-order模型;Freudlich和Langmuir模型均可较好地描述沸石对磷的吸附特征;沸石对磷的吸附量随pH值增大而明显减小.
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| 关 键 词： | 天然沸石 磷 吸附动力学 吸附等温曲线 |
Mechanism and Adsorption Performance of Phosphorus by Natural Zeolite |
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| Zhang Cuiling,Dang Rui,He Jiandong,Wei Yudi.Mechanism and Adsorption Performance of Phosphorus by Natural Zeolite[J].Environmental Science and Management,2014,39(12):104-108. |
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| Authors: | Zhang Cuiling Dang Rui He Jiandong Wei Yudi |
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| Institution: | (School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China) |
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| Abstract: | In order to investigate the adsorption mechanism of phosphorus on natural zeolite, natural zeolite come from Baiyin City were characterized using scanning electron microscopy, X - ray diffraction and X - ray fluorescence. The effects of contact time, initial concentration of phosphorus and the pH value were investigated through static adsorption experiments. The results showed that the adsorption kinetic process of zeolite to phosphorus in aqueous solution conformed the pseudo second order kinetic model. The equilibrium adsorption data of phosphate on natural zeolite could be described by the Freudlich isotherm model and the Langmuir isotherm model. Zeolite adsorption capacity of phosphorus reduced significantly with increases of pH value. |
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| Keywords: | natural zeolite phosphate adsorption kinetics adsorption isotherm |
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