Impacts of Mineralogy and Competing Microbial Respiration Pathways on the Fate of Uranium in Contaminated Groundwater

Kostka, Joel E.

Florida State University, Tallahassee, FL

关键词: Respiration;    Uranium;    Sediments;    Mineralogy;    59 Basic Biological Sciences;   

DOI  :  10.2172/893779
RP-ID  :  NABIR-1015848-2003
RP-ID  :  None
RP-ID  :  893779

美国|英语

来源: UNT Digital Library

【 摘 要 】

This is a field-oriented project designed to elucidate the microbiological and geochemical factors controlling U(VI) reduction/immobilization in subsurface environments at the NABIR FRC. Efforts focused on acidic sediments, (1) to characterize the dominant minerals likely to limit U speciation, (2) to directly quantify microbial respiration processes controlling U subsurface chemistry, and (3) to identify and enumerate the responsible organisms. Results indicate that the activities and growth of bacteria are limited in this acidic subsurface. The relevant geochemical parameters have now been characterized, and respiration rates quantified.