Mobilities of uranium species in sedimentary interbed from the Snake River Plain

Abstract

Lab. column tests were conducted to characterize the mobility of uranium in a composite of sedimentary interbed samples from the Snake River Plain. The objective of the studies was to investigate the influence on uranium mobility of carbonate, fluoride, sulfate, and hydroxide complexes at pH 8, which is representative of groundwater from the region. It was detd. that carbonate species were the most dominant followed by hydroxide species. The observations are consistent with the results of speciation modeling. The carbonate species, which had retardation factors between 5 and 10, were considerably more mobile than the hydroxide species, which had retardation factors in excess of 300. [on SciFinder(R)]