膨润土、累托石和沸石对Sr^2＋的吸附性能研究

本文在研究膨润土、累托石和沸石样品的矿物组成和基本物化性能的基础上,以这三种样品作为吸附剂,研究它们在静态条件下对Sr2＋的吸附效果。结果表明：在静态吸附条件下,三种样品的吸附效果因物化性质的不同而有所差异,其中,膨润土的吸附效果要好于其他两种样品。三种样品对Sr2＋的吸附率都随着原液浓度的增加而减小,随着吸附剂量的增加而增大。0.1g的膨润土、累托石和沸石样品的最大吸附量分别为19.71mg/g,11.83mg/g,12.27mg/g,对应于0.0 mol/L,0.005mol/L,0.01mol/L的原液浓度获得。

Study on Absorption Capacity of Bentonite,Rectorite and Zeolite for Sr^2＋

On the basis of analyzing the mineral composition and the basic physicochemical properties of bentonite, rectorite and zeolite sample, using the three sample as absorbent, studied their absorption capacity for Sr^2＋ in static condition.The results showed that the absorption capacity of the three sample were different with the difference among their physicochemical properties, absorp- tion capacity of bentonite was better than the other two in static absorption condition. Absorption rate of the three sample decreased with the increase of solution concentration and increased whereas absorption doze increased. The maximal adsorption capacity of bentonite, rectorite and zeolite with absorption doze of 0.1 g were 19.71 mg/g, 11.83mg/g, 12.27mg/g,respectively, corresponding to the solution concentration with 0.002mol/L.0.005mol/l,0.01mol/L.