Regeneration of liquid redox systems using Thiobacillus ferrooxi

Details Regeneration of liquid redox systems using Thiobacillus ferrooxi Regeneration of liquid redox systems using Thiobacillus ferrooxi

1993-10-05

1996-04-16

Lander, Ferris

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

4235766, 423DIG17, B01D 5352, C01B 1705

Patent

active

055080146

ABSTRACT:
In the removal of hydrogen sulfide from a gas stream by use of a liquid catalyst containing ferric ions, the ferric ions of the liquid catalyst are converted to ferrous ions. Regeneration of the ferric ions can be accomplished by bubbling air through the liquid catalyst. A significant decrease in regeneration time for transforming the ferrous ions back to the original ferric ion state can occur when a culture of Thiobacillus ferrooxidans bacteria is introduced to the liquid catalyst. Optimization indicates a pH range between 6.0 and 9.0, a temperature between 20.degree. C. and 45.degree. C. and a cell concentration of 12.5.times.10.sup.8 cells per liter.

REFERENCES:
patent: 3218252 (1965-11-01), Glover et al.
patent: 3266889 (1966-08-01), Duncan et al.
patent: 3305353 (1967-02-01), Duncan et al.
patent: 4206288 (1980-06-01), Detz et al.
patent: 4455287 (1984-06-01), Primack et al.
patent: 4456688 (1984-06-01), Dugan et al.
patent: 4559313 (1985-12-01), Myerson et al.
patent: 4622212 (1986-11-01), McManus et al.
patent: 4666852 (1987-05-01), Cork
patent: 4758417 (1988-07-01), van Lookeren-Campagne
patent: 4789478 (1988-12-01), Revis et al.
patent: 4861723 (1989-08-01), Madgavkar
patent: 4888293 (1989-12-01), Hackl et al.
patent: 4891205 (1990-01-01), Bedell
patent: 4931262 (1990-05-01), Sonta et al.
patent: 4987081 (1991-01-01), Hackl et al.
patent: 5021069 (1991-06-01), Whellock et al.
patent: 5089412 (1992-02-01), Hackl et al.
patent: 5096691 (1992-03-01), Bedell
patent: 5338778 (1994-08-01), Bedell
Satoh, H., et al. "Bacteria Help Desulfurize Gas", Hydrocarbon Processing, May 1988, pp. 76D-76F.
"Studies on Bacteria in the ANG Stretford Plant" by M. C. Bromel, GRI 86/0256, pp. 176, 186 (1986) (May).
Workshop on Biotechnology for the Mining, Metal-Refining and Fossil Fuel Processing Industries; "Ferrous Iron Oxidation By Thiobacillus ferroxidans", W. John Ingledew, p. 24, Biotechnology and Bioengineering Symp. No. 16 (1986) (Sep.).
Science, vol. 264, pp. 745-846, 6 May 1994, "Microbial Mining Boosts the Environment, Bottom Line" pp. 778, 779.
"Microbial Sweeting of Sour Gas", P. N. Agumadu and Charanjit Rai, Presented at 1991 GRI Liquid Redox Sulfur Recovery Conference, Austin, Texas May 5-7, 1991.
"Growth and Maintenance of Thiobacillus ferrooxidans cells" Jean LaCombe Barron and Donald R. Lueking, pp. 2801, 2804, Applied and Environmental Microbiology, Sep. 1990.
S.I.R. H1074, Lazaroff et al., Bacterio-Electric Leaching of Metals, Jul. 7, 1992.

Affiliated with

Also associated with

Rating

Regeneration of liquid redox systems using Thiobacillus ferrooxi does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Regeneration of liquid redox systems using Thiobacillus ferrooxi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Regeneration of liquid redox systems using Thiobacillus ferrooxi will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-323540