地质水泥固化体颗粒对溶液中铀的去除性能研究

Study of Uranium Removal Performance in Solution Using Geocement Solidified Body Particles

本文通过振荡吸附实验研究了地质水泥固化体颗粒对溶液中铀的去除性能。由于地质水泥本身呈碱性,溶液的pH在振荡过程中逐渐增加,导致铀自身的沉淀,因此,溶液中铀的去除由吸附和沉淀两方面共同造成。增加溶液初始pH以及增加地质水泥颗粒投加量,均能增加对铀的去除效果。由于普通硅酸盐水泥的碱性更强,普通硅酸盐水泥颗粒对铀的去除率高于地质水泥颗粒。

The uraniunl removal performance in solution using geocement solidified body particles is investigated by oscillation adsorption experiments. For the alkalinity ofgeocement, tile ptt value of solution increases during the oscillation process, resulting in the deposition of uranium. Tberefore, the removal ot＇uranium in solution using geocement solidified body particles is caused by both adsorption and deposition. The removal efficiency can be enhanced by increasing the pH value of solution and increasing the dosage of geocementparticles.Due to the stronger alkalinity of Portland cement, the removal efficiency using ordinary Porthind cement solidified body particles is higher than using geocement particles.