Formation and Reactivity of Biogenic Iron Microminerals

Beveridge, Terrance J. ; Ferris, F. Grant

University of Guelph

关键词: Biogeochemistry;    Redox Reactions;    37 Inorganic, Organic, Physical And Analytical Chemistry;    59 Basic Biological Sciences;    Manganese;   

DOI  :  10.2172/893865
RP-ID  :  NABIR-1012275-2002
RP-ID  :  None
RP-ID  :  893865

美国|英语

来源: UNT Digital Library

【 摘 要 】

Radionuclide and heavy metal contaminants at DOE sites pose immediate and long-term environmental problems. Under the NABIR program, bacteria are being considered for their role in the cycling of these contaminants because they influence many redox reactions in the subsurface. Dissimilatory metal reducing bacteria (DMRB) are particularly important to controlling the biogeochemistry of subsurface environments through enzymatic reduction of iron and manganese minerals. During reduction of FeIII, biogenic FeII phases form at the cell-mineral interface which may profoundly influence metal reduction.