干旱区生态环境知识资源中心(Arid): Research summary: characterization of radionuclide and moisture movement through arid region sediments

Arid

DOI	10.2172/6060083
报告编号	PNL-SA-9887
来源ID	OSTI_ID: 6060083
	Research summary: characterization of radionuclide and moisture movement through arid region sediments
	Gee, G.W.; Jones, T.L.; Rai, D.
英文摘要	This project has the task of understanding the movement of moisture and radionuclides under arid region conditions. This understanding will be used to maximize the isolation of low level waste from the environment. Specific objectives include: field monitoring of moisture and radionuclide transport at an arid region site; assessment of the interaction of radionuclides with unsaturated soils in arid regions; evaluation of radionuclide transport in unsaturated soils by appropriate mathematical models; and assessment of the importance of upward migration of radionuclides by evaporation and diffusion processes. The Burial Waste Test Facility (BWTF) located near Richland, Washington, on the Department of Energy (DOE) Hanford Site has been monitored for water content and radionuclide transport for the past two years. Tritium movement has been observed to depths of 7.6 m in both irrigated and nonirrigated lysimeters. Laboratory tests were conducted to determine how leachate from uranium tailings interacts with geologic materials. Acid leach tailings and tailings solution and geologic materials typical of mill site tailing pits were physically and chemically characterized. Investigation was made of the sorption characteristics of heavy metals and radionuclides on the geologic materials under low and neutral pH conditions. From solubility tests conducted at Pacific Northwest Laboratory, thermodynamic considerations predicted that for the Eh-pH range of natural aqueous environment, the dominant species of Pu is likely to be Pu(V) in relatively oxidizing environments and Pu(III) in reducing environments. Radionuclide transport through unsaturated media was investigated by using two solute transport models to describe the transport of tritium and strontium-85 in laboratory columns. A new approach was used to analyze radon emissions from uranium mill tailings.
出版年	1981
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	54 ENVIRONMENTAL SCIENCES ; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS ; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; PLUTONIUM ; ENVIRONMENTAL TRANSPORT ; RADIOACTIVE WASTE DISPOSAL ; RADIONUCLIDE MIGRATION ; MATHEMATICAL MODELS ; TRITIUM ; COORDINATED RESEARCH PROGRAMS ; GROUND WATER ; HANFORD RESERVATION ; LEACHATES ; LEACHING ; LOW-LEVEL RADIOACTIVE WASTES ; MILL TAILINGS ; RADIATION MONITORING ; SOILS ; ACTINIDES ; BETA DECAY RADIOISOTOPES ; BETA-MINUS DECAY RADIOISOTOPES ; DISPERSIONS ; DISSOLUTION ; ELEMENTS ; HYDROGEN COMPOUNDS ; HYDROGEN ISOTOPES ; ISOTOPES ; LIGHT NUCLEI ; MANAGEMENT ; MASS TRANSFER ; MATERIALS ; METALS ; MIXTURES ; MONITORING ; NATIONAL ORGANIZATIONS ; NUCLEI ; ODD-EVEN NUCLEI ; OXYGEN COMPOUNDS ; RADIOACTIVE MATERIALS ; RADIOACTIVE WASTES ; RADIOISOTOPES ; RESEARCH PROGRAMS ; SEPARATION PROCESSES ; SOLID WASTES ; SOLUTIONS ; TAILINGS ; TRANSURANIUM ELEMENTS ; US DOE ; US ERDA ; US ORGANIZATIONS ; WASTE DISPOSAL ; WASTE MANAGEMENT ; WASTES ; WATER ; YEARS LIVING RADIOISOTOPES 510301* -- Environment, Terrestrial-- Radioactive Materials Monitoring & Transport-- Soil-- (-1987) ; 053000 -- Nuclear Fuels-- Environmental Aspects ; 520301 -- Environment, Aquatic-- Radioactive Materials Monitoring & Transport-- Water-- (1987) ; 052002 -- Nuclear Fuels-- Waste Disposal & Storage
URL	http://www.osti.gov/scitech/servlets/purl/6060083
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/263133
推荐引用方式 GB/T 7714	Gee, G.W.,Jones, T.L.,Rai, D.. Research summary: characterization of radionuclide and moisture movement through arid region sediments,1981.