原子能科学技术Issue(z2)：381-386,6.DOI:10.7538/yzk.2013.47.S1.0381
处置库地下水中核素的溶解度和形态计算
Solubility and Speciation Calculation of Key Radionuclides in Repository Groundwater
刘德军 1刘艳红 1罗田1
作者信息
- 1. 国核 北京 科学技术研究院有限公司 核电燃料与材料研究所，北京 100029
- 折叠
摘要
Abstract
The development of nuclear energy on a large scale will produce high level radioactive wastes .It is a concerned problem how to dispose of these wastes safely .The deep geological disposal of the high level radioactive wastes is expected to be a safer disposal method in most countries . Granite (Beishan ) and clay were considered as suitable geological disposal media in China and Belgium , respectively . To access and analyze the possibilities of granite and clay as candidate rocks in high level waste geological disposal , it is necessary to determine the speciation and solubility of key radionuclides in rock groundwater , which are the input data of calculating the radioactivity and safety factor of repository . Tc , Np and Th were selected as key radionuclides of geological repository and EQ-CALCS software coupled with HYDRA database was used to calculate and experimentally compare the solubility and speciation of radionuclides in granite and clay groundwater in the paper .The Pourbaix figure of radionuclides under different conditions was obtained and the stable speciation of radionuclides in groundwater was determined .The effects of pH on solubility of key radionuclides in groundwater were studied to indicate the maximum source term concentration of radionuclide concerned in geological repository conditions .关键词
形态/溶解度/关键核素/地球化学模拟Key words
speciation/solubility/key radionuclide/geochemical modeling分类
化学化工引用本文复制引用
刘德军,刘艳红,罗田..处置库地下水中核素的溶解度和形态计算[J].原子能科学技术,2013,(z2):381-386,6.
