Influence of Carbon Sources and Electron Shuttles on Ferric Iron Reduction by Cellulomonas sp. Strain ES6

Journal Article · Thu Sep 01 00:00:00 EDT 2011 · Biodegradation

DOI:https://doi.org/10.1007/s10532-011-9457-1· OSTI ID:1028224

Gerlach, Robin; Field, Erin K; Viamajala, Sridhar; Peyton, Brent M; Apel, William A; Cunningham, Al B

Microbially reduced iron minerals can reductively transform a variety of contaminants including heavy metals, radionuclides, chlorinated aliphatics, and nitroaromatics. A number of Cellulomonas spp. strains, including strain ES6, isolated from aquifer samples obtained at the U.S. Department of Energy's Hanford site in Washington, have been shown to be capable of reducing Cr(VI), TNT, natural organic matter, and soluble ferric iron [Fe(III)]. This research investigated the ability of Cellulomonas sp. strain ES6 to reduce solid phase and dissolved Fe(III) utilizing different carbon sources and various electron shuttling compounds. Results suggest that Fe(III) reduction by and growth of strain ES6 was dependent upon the type of electron donor, the form of iron present, and the presence of synthetic or natural organic matter, such as anthraquinone-2,6-disulfonate (AQDS) or humic substances. This research suggests that Cellulomonas sp. strain ES6 could play a significant role in metal reduction in the Hanford subsurface and that the choice of carbon source and organic matter addition can allow for independent control of growth and iron reduction activity.

• Research Organization: Idaho National Laboratory (INL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC07-05ID14517
• OSTI ID: 1028224
• Report Number(s): INL/JOU-10-19978
• Journal Information: Biodegradation, Journal Name: Biodegradation Journal Issue: 5 Vol. 22; ISSN BIODEG; ISSN 0923-9820
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
59 BASIC BIOLOGICAL SCIENCES
AQUIFERS
BACTERIA
BINDING ENERGY
BIOREMEDIATION
CARBON SOURCES
CHROMIUM 51
CONTROL
ELECTRON TRANSFER
Fermenters
GROWTH
HANFORD RESERVATION
HEAVY METALS
IRON COMPOUNDS
MINERALS
ORGANIC MATTER
RABBIT TUBES
RADIOISOTOPES
REDUCTION
SOLIDS
TNT
VALENCE
WASHINGTON
anthraquinone-2
6-disulfonate (AQDS)