粉煤灰对低质量浓度铀的吸附研究

Adsorption of coal ash to low concentration uranium in solution

简单介绍了粉煤灰的基本性质、吸附特性和处理废水的机理。根据粉煤灰的物理和化学吸附特性,研究了其对低质量浓度铀溶液吸附效果,分析了吸附容量及影响因素。实验表明,t=0～76h时,铀的质量浓度急速下降,吸附效果明显,最大时吸附量可达到82%。随着吸附的进行,溶液pH值增大,而溶液中Fe3+、∑Fe则在减少。

The adsorptive characteristics of pulverized—coal ash to uranium in the waste water is studied in detail,which includes the adsorptive effect to low concentration uranium,the adsorptive capacity and the effect factors. The experiment shows that the adsorptive effect is significant with the concentration of uranium declining rapidly within 76 hours. The adsorptive efficiency of uranium is about 82%. Total iron,ferric iron in the solution decrease at the same time with the increase of pH value.