负载型FeOOH/mmt吸附As(Ⅴ)的实验研究

Experimental Study of Supported FeOOH/mmt Adsorbed As(Ⅴ)

以蒙脱石为基底,在Fe（NO3）3-HNO3液相反应体系诱导制备了FeOOH材料,研究了其吸附水中As（Ⅴ）的性能及机制。结果表明：在较宽的酸性范围内（pH值为3~7）有效吸附砷,其吸附等温线能用Freundlich和Langmuir吸附模型很好地描述。同时对吸附机理进行探讨,FeOOH/mmt对砷的吸附可能是静电吸附和化学反应共同作用的结果。

This paper takes montmorillonite as a basis,and prepares the FeOOH material in the Fe（NO3）3-HNO3 liquid phase reaction system,and studies the As（V）properties and the mechanism in its absorbed water.The results show that in a wide range of acidic（pH 3~7）of effective adsorption of arsenic,its adsorption isotherm can use Freundlich and Langmuir adsorption model to make good description.At the same time,it makes discussion on the adsorption mechanism,the adsorption of arsenic of FeOOH/mmt may be the result of interaction of electrostatic adsorption and chemical effect.