α-FeOOH纳米线对Cu^(2+)的吸附研究

Study on Adsorbability of Cu^(2+) by α-FeOOH Nanowires

文章利用水热法合成了α-FeOOH纳米线,研究了其对于废水中重金属离子(Cu^(2+))的吸附平衡。研究结果表明:Cu^(2+)在α-FeOOH纳米线上的吸附行为更符合Langmuir等温吸附模型,其最大吸附量可达27.15 mg·g^(-1)。且吸附量随着温度的升高呈增加趋势,表明该吸附过程是吸热过程。

In the paper, α-FeOOH nanowires were prepared by using hydrothermal method, and the adsorption equilibrium for this material to adsorb heavy metal ion（Cu^（2＋）） in wastewater was studied. The results indicated that Langmuir equation had better fitness than Freudlich equation in isotherm adsorption process, and the maximum adsorption amount was calculated to be 27.15 mg·g^（-1）. It should be noted that when the temperature rised, the adsorbing capacity increased correspondingly, which demonstrated that the adsorption of Cu^（2＋） was endothermic process.