Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing element or inorganic compound except carbon dioxide
Patent
1984-10-17
1989-11-14
Schenkman, Leonard
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing element or inorganic compound except carbon dioxide
435262, C12P 300
Patent
active
048807400
ABSTRACT:
A process is provided for reducing iron ore by treatment with microorganisms which comprises forming an aqueous mixture of iron ore, microorganisms operable for reducing the ferric iron of the iron ore to ferrous iron, and a substrate operable as an energy source for the microbial reduction; and maintaining the aqueous mixture for a period of time and under conditions operable to effect the reduction of the ore. Preferably the microorganism is Pseudomonas sp. 200 and the reduction conducted anaerobically with a domestic wastewater as the substrate. An aqueous solution containing soluble ferrous iron can be separated from the reacted mixture, treated with a base to precipitate ferrous hydroxide which can then be recovered as a concentrated slurry.
REFERENCES:
Chemical Abstracts, vol. 86 (1977); #2180h, Brock et al.
Chemical Abstracts, vol. 81 (1974); #47223n, Galstyan et al.
Chemical Abstracts, vol. 95 (1981); #165319k, Shakhobova.
Chemical Abstracts, vol. 98 (1983); #113276m, Jones et al.
Brierley, C. L. (1982), Microbiological Mining, Scientific Am., 247, 44-53.
Brock, T. D. and J. Gustafson (1976), Ferric Iron Reduction by Sulfur and Iron-Oxidizing Bacteria, Appl. Environ. Microbiol., 32, 567-571.
Ehrlich, H. L. (1981), Geomicrobiology, Marcel Dekker, New York, p. 187.
Kino, K. and S. Usami (1982), Biological Reduction of Ferric Iron and Sulfur Oxidizing Bacteria, Agric. Biol. Chem., 46, 803-805.
Metcalf & Eddy, Inc. (1979), Wastewater Engineering: Treatment, Disposal, Reuse, 2nd edition, McGraw-Hill, New York, 56-75.
Murr, L. E., A. E. Torma and J. A. Brierley (1978), Metallurgical Applications of Bacterial Leaching and Related Phenomena, Academic Press, New York, 526 pages, pp. 403-426.
Obuekwe, C. E. and W. S. Westlake (1982), Effects of Medium Composition on Cell Pigmentation, Cytochrome Content, and Ferric Iron Reduction in a Pseudomonas sp. Isolated From Crude Oil, Can. J. Microbiol., 28, 989-992.
Jones, Gardener and Simon (1983), Bacterial Reduction of Ferric Iron in a Stratified Eutophic Lake, J. General Microbiol., 129, 131-139.
Munch and Ottow (1983), Reductive Transformation Mechanism of Ferric Oxides in Hydromorphic Soils, Environ. Biogeochemistry Ecol. Bull. (Stockholm), 35, 383-394.
Hoffmann, Faust, Panda, Koo and Tsuchiya (1981), Kinetics of the Removal of Iron Pyrite From Coal by Microbial Catalysis, Appl. Environ. Microbiol., 42, 259-271.
Arnold Robert G.
Hoffmann Michael R.
Stephanopoulos Gregory
California Institute of Technology
Lipovsky Joseph A.
Logan F. Eugene
Schenkman Leonard
LandOfFree
Microbial reduction of iron ore does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microbial reduction of iron ore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microbial reduction of iron ore will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1852714