Extracellular iron-sulfur precipitates from growth of Desulfovibrio desulfuricans
Abstract
The authors have examined extracellular iron-bearing precipitates resulting from the growth of Desulfovibrio desulfuricans in a basal medium with lactate as the carbon source and ferrous sulfate. Black precipitates were obtained when D. desulfuricans was grown with an excess of FeSO{sub 4}. When D. desulfuricans was grown under conditions with low amounts of FeSO{sub 4}, brown precipitates were obtained. The precipitates were characterized by iron K-edge XAFS (X-ray absorption fine structure), {sup 57}Fe Moessbauer-effect spectroscopy, and powder X-ray diffraction. Both were noncrystalline and nonmagnetic (at room temperature) solids containing high-spin Fe(III). The spectroscopic data for the black precipitates indicate the formation of an iron-sulfur phase with 6 nearest S neighbors about Fe at an average distance of 2.24(1) {angstrom}, whereas the brown precipitates are an iron-oxygen-sulfur phase with 6 nearest O neighbors about Fe at an average distance of 1.95(1) {angstrom}.
- Authors:
- Publication Date:
- Research Org.:
- Argonne National Lab., IL (US)
- Sponsoring Org.:
- US Department of Energy (US)
- OSTI Identifier:
- 750631
- Report Number(s):
- ANL/CHM/CP-100765
TRN: AH200019%%110
- DOE Contract Number:
- W-31109-ENG-38
- Resource Type:
- Conference
- Resource Relation:
- Conference: MRS '99 Fall Meeting, Boston, MA (US), 11/29/1999--12/03/1999; Other Information: PBD: 20 Dec 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 02 PETROLEUM; 59 BASIC BIOLOGICAL SCIENCES; DESULFOVIBRIO; GROWTH; IRON SULFATES; BIODEGRADATION; IRON SULFIDES; CRYSTAL STRUCTURE; IRON COMPOUNDS; OXYSULFIDES; OIL WELLS; WATERFLOODING; HYDROGEN SULFIDES; CORROSIVE EFFECTS; BIOLOGICAL FOULING
Citation Formats
Antonio, M R, Tischler, M L, and Witzcak, D. Extracellular iron-sulfur precipitates from growth of Desulfovibrio desulfuricans. United States: N. p., 1999.
Web.
Antonio, M R, Tischler, M L, & Witzcak, D. Extracellular iron-sulfur precipitates from growth of Desulfovibrio desulfuricans. United States.
Antonio, M R, Tischler, M L, and Witzcak, D. 1999.
"Extracellular iron-sulfur precipitates from growth of Desulfovibrio desulfuricans". United States. https://www.osti.gov/servlets/purl/750631.
@article{osti_750631,
title = {Extracellular iron-sulfur precipitates from growth of Desulfovibrio desulfuricans},
author = {Antonio, M R and Tischler, M L and Witzcak, D},
abstractNote = {The authors have examined extracellular iron-bearing precipitates resulting from the growth of Desulfovibrio desulfuricans in a basal medium with lactate as the carbon source and ferrous sulfate. Black precipitates were obtained when D. desulfuricans was grown with an excess of FeSO{sub 4}. When D. desulfuricans was grown under conditions with low amounts of FeSO{sub 4}, brown precipitates were obtained. The precipitates were characterized by iron K-edge XAFS (X-ray absorption fine structure), {sup 57}Fe Moessbauer-effect spectroscopy, and powder X-ray diffraction. Both were noncrystalline and nonmagnetic (at room temperature) solids containing high-spin Fe(III). The spectroscopic data for the black precipitates indicate the formation of an iron-sulfur phase with 6 nearest S neighbors about Fe at an average distance of 2.24(1) {angstrom}, whereas the brown precipitates are an iron-oxygen-sulfur phase with 6 nearest O neighbors about Fe at an average distance of 1.95(1) {angstrom}.},
doi = {},
url = {https://www.osti.gov/biblio/750631},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Dec 20 00:00:00 EST 1999},
month = {Mon Dec 20 00:00:00 EST 1999}
}