硅藻土吸附Cu^(2+)吸附平衡等温式及穿透曲线的测定

Determination of penetration curve for isothermal equilibrium absorption of diatomite to coper(Ⅱ) ion

研究了硅藻土对Cu2+进行静态吸附的吸附平衡等温式。研究表明:它符合兰缪尔吸附等温式,而且温度越高吸附效果越好,达到吸附平衡所需时间为3 h;通过实验绘制出了硅藻土吸附铜离子的穿透曲线,开始穿透时间是5 m in,完全穿透的时间为15 m in;无论是静态吸附或动态吸附,硅藻土对Cu2+的吸附都具有一定的吸附效果。

The diatomite to carry on the static absorption to Cu^2＋ and the absorption equilibrium isothermic equation were studied. The experiment indicated that it was consistent with Langmuir isothermic absorption pattern. Moreover, the higher the temperature was, the better the effect was. After 3 hours, it reached equilibrium. Penetration curve was drawn by the experiment. The result indicated that initial penetration time is 5 minutes, while complete penetration time was 15 minutes. The diatomite has a limited absorption capacity to the Cu^2＋ whether it was dynamic absorption or static absorption.