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本文介绍了用硅胶作吸附剂去除含铀有机溶液中~(95)Zr-~(95)Nb的实验室研究结果。通过静态实验,测定了不同型号、不同含水量的硅胶在不同温度时的吸附率,对影响吸附率的其它因素(溶液酸度、含铀量)也进行了研究。对溶液中铀浓度、柱温、流速对~(95)Zr-~(95)Nb去污系数的影响进行了柱实验研究。同时,对从硅胶柱上解吸~(95)Zr-~(95)Nb的条件做了初步实验。
In this paper, we present a laboratory study on the removal of ~ (95) Zr- ~ (95) Nb from uranium-bearing organic solution using silica gel as adsorbent. Static experiments were carried out to determine the adsorption rates of silica gel with different types and moisture contents at different temperatures. Other factors affecting the adsorption rate (acidity and uranium content of the solution) were also studied. The effects of uranium concentration, column temperature and flow rate on the decontamination coefficient of ~ (95) Zr ~ (95) Nb in solution were investigated by column experiments. At the same time, a preliminary experiment on desorption of ~ (95) Zr- ~ (95) Nb from silica gel column was made.