Electrode Induced Removal and Recovery of Uranium (VI) from Acidic Subsurfaces

doi:10.2172/1089741

GSTDTAP > 地球科学

DOI	10.2172/1089741
报告编号	DOE/ER/64566
来源ID	OSTI ID: 1089741
	Electrode Induced Removal and Recovery of Uranium (VI) from Acidic Subsurfaces
	Gregory, Kelvin [Carnegie Mellon University]
	2013-08-12
出版年	2013
语种	英语
国家	美国
领域	地球科学
英文摘要	The overarching objective of this research is to provide an improved understanding of how aqueous geochemical conditions impact the removal of U and Tc from groundwater and how engineering design may be utilized to optimize removal of these radionuclides. Experiments were designed to address the unique conditions in Area 3 of ORNL while also providing broader insight into the geochemical effectors of the removal rates and extent for U and Tc. The specific tasks of this work were to: 1) quantify the impact of common aqueous geochemical and operational conditions on the rate and extent of U removal and recovery from water, 2) investigate the removal of Tc with polarized graphite electrode, and determine the influence of geochemical and operational conditions on Tc removal and recovery, 3) determine whether U and Tc may be treated simultaneous from Area 3 groundwater, and examine the bench-scale performance of electrode-based treatment, and 4) determine the capacity of graphite electrodes for U(VI) removal and develop a mathematical, kinetic model for the removal of U(VI) from aqueous solution. Overall the body of work suggests that an electrode-based approach for the remediation of acidic subsurface environments, such as those observed in Area 3 of ORNL may be successful for the removal for both U(VI) and Tc. Carbonaceous (graphite) electrode materials are likely to be the least costly means to maximize removal rates and efficiency by maximizing the electrode surface area.
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/6093
专题	地球科学
推荐引用方式 GB/T 7714	Gregory, Kelvin [Carnegie Mellon University]. Electrode Induced Removal and Recovery of Uranium (VI) from Acidic Subsurfaces,2013.