Although stimulation of dissimilatory metal reduction to promote the reductive 
precipitation of uranium has been shown to successfully remove uranium from some 
aquifer sediments, the organisms in the family Geobacteraceae that have been 
found to be associated with metal reduction in previous studies are not known to 
grow at the high salinities found in some uranium-contaminated groundwaters. 
Studies with a highly saline uranium-contaminated aquifer sediment demonstrated 
that the addition of acetate could stimulate the removal of U(VI) from the 
groundwater. This removal was associated with an enrichment in microorganisms 
most closely related to Pseudomonas and Desulfosporosinus species.