Vanadium Respiration by Geobacter metallireducens : Novel Strategy for In Situ Removal of Vanadium from Groundwater
- 1 May 2004
- journal article
- research article
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 70 (5), 3091-3095
- https://doi.org/10.1128/aem.70.5.3091-3095.2004
Abstract
Vanadium can be an important contaminant in groundwaters impacted by mining activities. In order to determine if microorganisms of the Geobacteraceae , the predominant dissimilatory metal reducers in many subsurface environments, were capable of reducing vanadium(V), Geobacter metallireducens was inoculated into a medium in which acetate was the electron donor and vanadium(V) was the sole electron acceptor. Reduction of vanadium(V) resulted in the production of vanadium(IV), which subsequently precipitated. Reduction of vanadium(V) was associated with cell growth with a generation time of 15 h. No vanadium(V) was reduced and no precipitate was formed in heat-killed or abiotic controls. Acetate was the most effective of all the electron donors evaluated. When acetate was injected into the subsurface to enhance the growth and activity of Geobacteraceae in an aquifer contaminated with uranium and vanadium, vanadium was removed from the groundwater even more effectively than uranium. These studies demonstrate that G. metallireducens can grow via vanadium(V) respiration and that stimulating the activity of Geobacteraceae , and hence vanadium(V) reduction, can be an effective strategy for in situ immobilization of vanadium in contaminated subsurface environments.Keywords
This publication has 25 references indexed in Scilit:
- Microbial Reduction and Precipitation of Vanadium by Shewanella oneidensisApplied and Environmental Microbiology, 2003
- Enrichment of Members of the Family Geobacteraceae Associated with Stimulation of Dissimilatory Metal Reduction in Uranium-Contaminated Aquifer SedimentsApplied and Environmental Microbiology, 2002
- Relationships between Microbial Community Structure and Hydrochemistry in a Landfill Leachate-Polluted AquiferApplied and Environmental Microbiology, 2001
- Highly selective and sensitive kinetic spectrophotometric determination of vanadium(IV) in the presence of vanadium(V)Analytica Chimica Acta, 2000
- Deep subsurface microbial processesReviews of Geophysics, 1995
- Role of microorganisms in vanadium concentration and dispersionGeomicrobiology Journal, 1992
- Microbial reduction of uraniumNature, 1991
- Acute toxicity of vanadium compounds in rats and miceToxicology Letters, 1984
- Reduction of Inorganic Compounds by Soil MicroorganismsSoil Science Society of America Journal, 1972
- Colorimetric determination of vanadium(V) with 4-(2-pyridylazo)-resorcinolTalanta, 1965