Chen Yanliang, Wei Yuezhou, He Linfeng, Tang Fangdong
School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
School of Nuclear Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
J Chromatogr A. 2016 Sep 30;1466:37-41. doi: 10.1016/j.chroma.2016.09.010. Epub 2016 Sep 4.
To separate thorium and uranium in nitric acid solution using anion exchange process, a strong base silica-based anion exchange resin (SiPyR-N4) was synthesized. Batch experiments were conducted and the separation factor of thorium and uranium in 9M nitric acid was about 10. Ion exchange chromatography was applied to separate thorium and uranium in different ratios. Uranium could be eluted by 9M nitric acid and thorium was eluted by 0.1M nitric acid. It was proved that thorium and uranium can be separated and recovered successfully by this method.
为了利用阴离子交换法在硝酸溶液中分离钍和铀，合成了一种强碱型硅胶基阴离子交换树脂（SiPyR-N4）。进行了批量实验，在9M硝酸中钍和铀的分离系数约为10。采用离子交换色谱法以不同比例分离钍和铀。铀可用9M硝酸洗脱，钍可用0.1M硝酸洗脱。结果表明，该方法能够成功地分离和回收钍和铀。
