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US Department of Energy Publications
Kinetics; metal; metal-reducing bacteria; bioreduction; biogenic precipitate
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Reduction Kinetics Of Fe(Iii), Co(Iii), U(Vi), Cr(Vi), And Tc(Vii) In Cultures Of Dissimilatory Metal-Reducing Bacteria, Chongxuan Liu, Yuri A. Gorby, John M. Zachara, James K. Fredrickson, Christopher F. Brown
Reduction Kinetics Of Fe(Iii), Co(Iii), U(Vi), Cr(Vi), And Tc(Vii) In Cultures Of Dissimilatory Metal-Reducing Bacteria, Chongxuan Liu, Yuri A. Gorby, John M. Zachara, James K. Fredrickson, Christopher F. Brown
US Department of Energy Publications
The reduction kinetics of Fe(III)citrate, Fe(III)NTA, Co(III)EDTA−, U(VI)O22+, Cr(VI)O42−, and Tc(VII)O4− were studied in cultures of dissimilatory metal reducing bacteria (DMRB): Shewanella alga strain BrY, Shewanella putrefaciens strain CN32, Shewanella oneidensis strain MR-1, and Geobacter metallireducens strain GS-15. Reduction rates were metal specific with the following rate trend: Fe (III)citrate ≥ Fe(III)NTA > Co(III)EDTA− ›› UO2 2+ > CrO42− > TcO4−, except for CrO42− when H2 was used as electron donor. The metal reduction rates were also electron donor dependent with faster rates …