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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.12
- 수록면
- 462 - 473 (12page)
이용수
초록· 키워드
오류제보하기
The uranium ore residues from the legacies of past uranium mining and milling activities that resulted from the less stringent environmental standards along with the uranium residues from the existing nuclear power plants continue to be a cause of concern as the final uranium residues are not made safe from radiological and general safety point of view. The deposition of uranium in ponds increases the risk of groundwater getting contaminated as these residues essentially leach through the upper unsaturated geological formation. In this context, a numerical model has been developed in order to forecast the 238U and its progenies concentration in an unsaturated soil. The developed numerical model is implemented in a hypothetical uranium tailing pond consisting of sandy soil and silty soil types. The numerical results show that the 238U and its progenies are migrating up to the depth of 90 m and 800 m after 10 y in silty and sandy soil, respectively. Essentially, silt may reduce the risk of contamination in the groundwater for longer time span and at the deeper depths. In general, a coupled effect of sorption and hydro-geological parameters (soil type, moisture context and hydraulic conductivity) decides the resultant uranium transport in subsurface environment.
목차
ABSTRACT
1. Introduction
2. Physical System and Governing Equations
3. Results and Discussion
4. Conclusions
References
참고문헌 (46)
참고문헌 신청
Robinson P. Uranium mill tailings remediation performed by the US DOE: An overview. US DOE; 2004.
Elango L, Brindha K, Kalpana L, Sunny F, Nair RN, Murugan R. Groundwater flow and radionuclide decay-chain transport modeling around a proposed uranium tailings pond in India. Hydrogeol. J. 2012;20:797-812.
Haile SS. VS2DRT: Variably saturated two dimensional reactive transport modelling in the vadose zone. Freiberg, Germany: TU Bergakademie Freiberg; 2013.
IAEA. The long term stabilization of uranium mill tailings. International Atomic Energy Agency, Austria; 2004.
Bossew P, Kirchner G. Modelling the vertical distribution of radionuclides in soil. Part 1: The convection-dispersion equation revisited. J. Environ. Radioact. 2004;73:127-150.
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UCI(KEPA) : I410-ECN-0101-2018-539-003101156