title: Modeling and experimental examination of water level effects on radon exhalation from fragmented uranium ore.
abstract: In this study, a one-dimensional steady-state mathematical model of radon transport in fragmented uranium ore was established according to Fick's law and radon transfer theory in an air-water interface. The model was utilized to obtain an analytical solution for radon concentration in the air-water, two-phase system under steady state conditions, as well as a corresponding radon exhalation rate calculation formula. We also designed a one-dimensional experimental apparatus for simulating radon diffusion migration in the uranium ore with various water levels to verify the mathematical model. The predicted results were in close agreement with the measured results, suggesting that the proposed model can be readily used to determine radon concentrations and exhalation rates in fragmented uranium ore with varying water levels.
authors: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, Hunan 421001, China; School of Environmental Protection and Safety Engineering, University of South China, Hengyang, Hunan 421001, China. Electronic address: yongjunye@163.com.
authors: Yong-Jun
authors: YJ
authors: Ye
authors: School of Environmental Protection and Safety Engineering, University of South China, Hengyang, Hunan 421001, China.
authors: Xin-Tao
authors: XT
authors: Dai
authors: Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang, Hunan 421001, China.
authors: De-Xin
authors: DX
authors: Ding
authors: School of Environmental Protection and Safety Engineering, University of South China, Hengyang, Hunan 421001, China.
authors: Ya-Li
authors: YL
authors: Zhao
mesh_terms: D008956:Models, Chemical; D011834:Radiation Monitoring / Q000379:methods; D011848:Radioactive Pollutants / Q000032:analysis*; D011886:Radon / Q000032:analysis*; D014501:Uranium / Q000032:analysis*
chemical_list: D011848:Radioactive Pollutants; D014501:Uranium; D011886:Radon
keywords: Fragmented uranium ore; Model; Radon concentration; Radon exhalation rate; Water level