水滑石除磷的吸附动力学研究

材料导报, 2014, 28(22): 85-88. doi: 10.11896/j.issn.1005-023X.2014.22.020

水滑石除磷的吸附动力学研究

李晶 ^1, , 何欣 ^2, , 张瑶 ^3, , 王玉荣 ^4, , 陈金毅 ^5,

1.武汉工程大学化学与环境工程学院,武汉,430073

2.武汉工程大学化学与环境工程学院,武汉,430073

3.武汉工程大学化学与环境工程学院,武汉,430073

4.武汉工程大学化学与环境工程学院,武汉,430073

5.武汉工程大学化学与环境工程学院,武汉,430073

基金项目: 教育部新世纪优秀人才计划项目(NCET-12-0713) 武汉工程大学研究生教育创新基金(CX2013108) 国家自然科学基金(51374157) 湖北省自然科学基金(2013CFA106)

关键词：水滑石 , 吸附 , 动力学

Kinetic Analysis for the Removal of Phosphorus onto Hydrotalcite by Adsorption

Keywords： hydrotalcite , adsorption , kinetics

采用共沉淀法制备了Mg/Al水滑石,研究了不同Mg/Al物质的量比、材料用量、不同pH条件下Mg/Al水滑石吸附除磷的动力学特征,从而对吸附速率的控制过程进行分析.结果表明水滑石对磷的吸附能较好地符合准二级动力学方程、Elovich动力学方程和内扩散模型.n(Mg)/n(Al) =3是水滑石最理想配比,水滑石投加量越大,外扩散过程越慢;一定范围内pH的升高能促进水滑石对磷吸附速率和吸附容量的提升.

参考文献

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材料期刊网

水滑石除磷的吸附动力学研究

Kinetic Analysis for the Removal of Phosphorus onto Hydrotalcite by Adsorption

参考文献