Browsing ELibrary by Author "Fredrickson J.K."

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BIOGENIC IRON MINERALIZATION ACCOMPANYING THE DISSIMILATORY REDUCTION OF HYDROUS FERRIC OXIDE BY A GROUNDWATER BACTERIUM - SORPTION OF MN2+ ON FECO3

Fredrickson J.K.; Zachara J.M.; Kennedy D.W.; Dong H.; Onstott T.C.; Hinman N.W.; Li S.M. (1998)

Dissimilatory iron-reducing bacteria (DIRB) couple the oxidation of organic matter or H2 to the reduction of iron oxides. The factors controlling the rate and extent of these reduction reactions and the resulting solid ...
BIOTRANSFORMATION OF TWO-LINE SILICA-FERRIHYDRITE BY A DISSIMILATORY FE(III)-REDUCING BACTERIUM: FORMATION OF CARBONATE GREEN RUST IN THE PRESENCE OF PHOSPHATE

Kukkadapu R.K.; Zachara J.M.; Fredrickson J.K.; Kennedy D.W. (2004)

The reductive biotransformation of two Si-ferrihydrite coprecipitates (1 and 5 mole % Si) by Shewanella putrefaciens, strain CN32, was investigated in 1,4-piperazinediethanesulfonic acid-buffered media (pH ∼7) with lactate ...
ENZYMOLOGY OF ELECTRON TRANSPORT: ENERGY GENERATION WITH GEOCHEMICAL CONSEQUENCES

DiChristina T.J.; Fredrickson J.K.; Zachara J.M. (2005)

Dissimilatory metal-reducing bacteria (DMRB) are important components of the microbial community residing in redox-stratified freshwater and marine environments. DMRB occupy a central position in the biogeochemical cycles ...
INFLUENCE OF MN OXIDES ON THE REDUCTION OF URANIUM(VI) BY THE METAL-REDUCING BACTERIUM SHEWANELLA PUTREFACIENS

Fredrickson J.K.; Zachara J.M.; Kennedy D.W.; Liu C.; Duff M.C.; Hunter D.B.; Dohnalkova A. (2002)

The potential for Mn oxides to modify the biogeochemical behavior of U during reduction by the subsurface bacterium Shewanella putrefaciens strain CN32 was investigated using synthetic Mn(III/IV) oxides (pyrolusite [β-MnO2], ...
MINERAL TRANSFORMATIONS ASSOCIATED WITH THE MICROBIAL REDUCTION OF MAGNETITE

Dong H.; Fredrickson J.K.; Kennedy D.W.; Zachara J.M.; Kukkadapu R.K.; Onstott T.C. (2000)

Although dissimilatory iron reducing bacteria (DIRB) are capable of reducing a number of metals in oxides and soluble forms, the factors controlling the rate/extent of magnetite reduction and the nature of the mineral ...
NONLOCAL BACTERIAL ELECTRON TRANSFER TO HEMATITE SURFACES

Rosso K.M.; Zachara J.M.; Fredrickson J.K.; Gorby Y.A.; Smith S.C. (2003)

Mechanisms by which dissimilatory iron-reducing bacteria utilize iron and manganese oxide minerals as terminal electron acceptors for respiration are poorly understood. In the absence of exogenous electron shuttle compounds, ...
REDUCTION OF TCO4- BY SEDIMENT-ASSOCIATED BIOGENIC FE(II)

Fredrickson J.K.; Zachara J.M.; Kennedy D.W.; Kukkadapu R.K.; McKinley J.P.; Heald S.M.; Liu C.; Plymale A.E. (2004)

The potential for reduction of 99TcO4−(aq) to poorly soluble 99TcO2 · nH2O(s) by biogenic sediment-associated Fe(II) was investigated with three Fe(III)-oxide containing subsurface materials and the dissimilatory metal-reducing ...
REDUCTION OF U(VI) IN GOETHITE (α-FEOOH) SUSPENSIONS BY A DISSIMILATORY METAL-REDUCING BACTERIUM

Fredrickson J.K.; Zachara J.M.; Kennedy D.W.; Duff M.C.; Gorby Y.A.; Li S.M.W.; Krupka K.M. (2000)

Dissimilatory metal-reducing bacteria (DMRB) can utilize Fe(III) associated with aqueous complexes or solid phases, such as oxide and oxyhydroxide minerals, as a terminal electron acceptor coupled to the oxidation of H2 ...
REDUCTIVE BIOTRANSFORMATION OF FE IN SHALE-LIMESTONE SAPROLITE CONTAINING FE(III) OXIDES AND FE(II)/FE(III) PHYLLOSILICATES

Kukkadapu R.K.; Zachara J.M.; Fredrickson J.K.; McKinley J.P.; Kennedy D.W.; Smith S.C.; Dong H. (2006)

A <2.0-mm fraction of a mineralogically complex subsurface sediment containing goethite and Fe(II)/Fe(III) phyllosilicates was incubated with Shewanella putrefaciens (strain CN32) and lactate at circumneutral pH under ...
SOLUBILIZATION OF FE(III) OXIDE-BOUND TRACE METALS BY A DISSIMILATORY FE(III) REDUCING BACTERIUM

Zachara J.M.; Fredrickson J.K.; Smith S.C.; Gassman P.L. (2001)

Trace metals associate with Fe(III) oxides as adsorbed or coprecipitated species, and consequently, the biogeochemical cycles of iron and the trace metals are closely linked. This communication investigated the solubilization ...

Browsing ELibrary by Author "Fredrickson J.K."

Browsing ELibrary by Author "Fredrickson J.K."

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