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| 改性长石对磷的吸附热力学和动力学研究 | |
| 引用本文： | 胡绳,刘云,董元华,王萍.改性长石对磷的吸附热力学和动力学研究[J].环境工程学报,2009,3(11):2100-2104. |
| 作者姓名： | 胡绳 刘云 董元华 王萍 |
| 作者单位： | 1. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,南京,210008;兰州交通大学环境与市政工程学院,兰州,730070 2. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,南京,210008 3. 兰州交通大学环境与市政工程学院,兰州,730070 |
| 摘 要： | 在500℃下对甘肃长石进行2 h煅烧，得到改性长石。通过批平衡实验，研究了改性长石对磷的吸附热力学和动力学性能。结果表明：改性长石对磷的吸附等温线符合Freundlich方程，且温度越高，吸附量越大。同时，在60 min内即可对10 mg/L磷溶液达到吸附平衡，改性长石对磷的吸附动力学符合准二级吸附动力学模型，主要是以化学吸附为主。 |
| 关 键 词： | 长石 除磷 吸附 动力学 热力学 |
Thermodynamic and kinetic of phosphorus adsorption onto calcined feldspar |
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| Hu Sheng,Liu Yun,Dong Yuanhua and Wang Ping.Thermodynamic and kinetic of phosphorus adsorption onto calcined feldspar[J].Techniques and Equipment for Environmental Pollution Control,2009,3(11):2100-2104. | |
| Authors: | Hu Sheng Liu Yun Dong Yuanhua and Wang Ping |
| Abstract: | The thermodynamics and the kinetics of the phosphorus adsorption on feldspar calcined at 500 ℃ for 2 hours were studied by the sets of equilibrium and time-based experiments under various conditions. The results showed that adsorption isotherms of phosphorus were modeled by Freundlich model, and the parameters indicated that the adsorption of phosphorus on feldspar was strongly dependent on tempreture and the adsorption of phosphorus increased with increasing tempreture of the system. Furthermore, the adsorption process reached e-quilibrium in 60 minutes, and the kinetics adsorption of phosphorus can be described by pseudo-second-order rate very well. |
| Keywords: | feldspar phosphorus removal adsorption kinetics thermodynamics |
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