干旱区生态环境知识资源中心(Arid): Processes controlling the migration and biodegradation of Non-aqueous phase liquids (NAPLs) within fractured rocks in the vadose zone FY97 annual report

Arid

DOI	10.2172/585039
报告编号	LBNL--41387
来源ID	OSTI_ID: 585039
	Processes controlling the migration and biodegradation of Non-aqueous phase liquids (NAPLs) within fractured rocks in the vadose zone FY97 annual report
	Geller, J.T.; Holman, Hoi-Ying; Conrad, M. [and others]
英文摘要	Subsurface contamination from volatile organic compounds (VOCs) has been found at many Department of Energy (DOE), Department of Defense (DoD) and industrial sites due to the widespread use of organic solvents and hydrocarbon fuels. At ambient pressures and temperatures in the shallow subsurface, these substances are liquids that are immiscible with water; hence they are commonly designated as non-aqueous phase liquids (NAPLs). At some DOE sites, NAPLs are the presumed source of groundwater contamination in fractured rocks, such as basalts (at Hanford and Idaho National Engineering and Environmental Laboratory (INEEL)), shales (Oak Ridge Y-12 Plant), and welded tuffs (Los Alamos National Laboratory (LANL)). The flow, transport and biodegradation processes controlling NAPL behavior in the vadose zone must be understood in order to establish the possible extent of contamination, the risk to groundwater supplies, and appropriate remediation action. This is particularly important in and sites with deep water tables (such as at Hanford, INEEL and LANL). In fractured rock aquifers, NAPL migration is likely to be dominated by the highly permeable pathways provided by rock fractures and joints. Two- and three-phase fluid phases may be present in vadose zone fractures, including NAPL-gas, NAPL-water (in regions of perched water) and NAPL-water-gas.
出版年	1998
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	54 ENVIRONMENTAL SCIENCES ; 05 NUCLEAR FUELS ; 58 GEOSCIENCES ; FRACTURED RESERVOIRS ; NONAQUEOUS SOLVENTS ; BIODEGRADATION ; ORGANIC COMPOUNDS ; VOLATILE MATTER ; ECOLOGICAL CONCENTRATION ; ENVIRONMENTAL TRANSPORT ; GROUND WATER ; CONTAMINATION ; REMEDIAL ACTION
URL	http://www.osti.gov/scitech/servlets/purl/585039
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/267423
推荐引用方式 GB/T 7714	Geller, J.T.,Holman, Hoi-Ying,Conrad, M. [and others]. Processes controlling the migration and biodegradation of Non-aqueous phase liquids (NAPLs) within fractured rocks in the vadose zone FY97 annual report,1998.