Investigation of Sorption and Migration Effect Factors of Uranium on Granites in Beishan
Investigation of Sorption and Migration Effect Factors of Uranium on Granites in Beishan
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发表时间：
2012
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通讯作者：
Wei Hong-gang
中科院分区：
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作者：
Wei Hong-gang
利用水文建模软件PHREEQC-Ⅱ，对中国某预选高放废物处置场铀进入地下水后的情况进行了模拟和预测。分析了pH、分散性、扩散系数、温度等各种影响因素在模拟中的不同作用。采用批处理方法研究了铀在北山花岗岩上的吸附和迁移行为。测定了铀的分布系数。研究了花岗岩粒度、pH、铀浓度和温度对模拟地下水中铀的影响。结果表明，北山花岗岩对铀的吸附能力较弱，且受多种因素的影响。软件仿真结果与实验结果基本一致。因此，该研究将为现场安全性研究提供重要依据。
The paper simulates and predicts the conditions after the uranium entered into the groundwater in a disposal site of pre-selected high level radioactive waste in China by using hydrologic modeling software PHREEQC-Ⅱ.The paper also analyzes the different roles of the various influential factors such as pH,dispersity,diffusion coefficient and temperature in the simulation.The behaviors of sorption and migration of uranium on granites in Beishan have been investigated by using the batch method.The distribution coefficient of uranium is determined.The effects of granite particle size,pH,concentration and temperature of uranium in simulated groundwater are studied.The results show that the ability of granites in Beishan to adsorb uranium is rather weak and influenced by some influential factors.The results of simulation by software is similar to the experimental results.Therefore,the study will provide an important basis for the safety research on the site.