Chemistry of inorganic compounds – Sulfur or compound thereof – Binary compound
Reexamination Certificate
2005-02-08
2005-02-08
Silverman, Stanley S. (Department: 1754)
Chemistry of inorganic compounds
Sulfur or compound thereof
Binary compound
C423S220000, C423S437100, C423S563000, C423SDIG001
Reexamination Certificate
active
06852305
ABSTRACT:
A process is provided for the production of hydrogen sulphide from the bacterial reduction of a mixture of a liquid and elemental sulfur with an electron donor, such as hydrogen gas, carbon monoxide or organic compounds. The bacteria may beDesulforomonassp. (mesophilic),DesulfotomaculumKT7 (thermophilic), etc. The liquid/sulfur mixture is at a pH ranging from 5 to 9, and the liquid/sulfur mixture contacts the bacteria at a hydraulic retention time of at least 1 day. The hydrogen sulphide is stripped from the liquid medium to produce a gas containing at least 1 volume percent hydrogen sulphide.
REFERENCES:
patent: 737579 (1903-09-01), Burschell
patent: 4354937 (1982-10-01), Hallberg
patent: 4614588 (1986-09-01), Li
patent: 4735723 (1988-04-01), Mulder
patent: 4931262 (1990-06-01), Sonta et al.
patent: 5298163 (1994-03-01), Ehlinger
patent: 5366633 (1994-11-01), Buisman
patent: 5474682 (1995-12-01), Buisman
patent: 5518619 (1996-05-01), Buisman
patent: 5587079 (1996-12-01), Rowley et al.
patent: 5670123 (1997-09-01), Mileo et al.
patent: 5922204 (1999-07-01), Hunter et al.
patent: 6217766 (2001-04-01), Stetter et al.
patent: 6228263 (2001-05-01), Rose et al.
patent: 6306302 (2001-10-01), Maree et al.
patent: 6387669 (2002-05-01), Truex et al.
patent: 33 21 515 (1984-12-01), None
patent: 195 29 098 (1997-02-01), None
patent: 0 411 687 (1991-02-01), None
patent: 0 778 350 (1997-06-01), None
patent: 0 819 756 (1998-01-01), None
patent: 9217410 (1992-10-01), None
patent: 9720778 (1997-06-01), None
patent: 9729055 (1997-08-01), None
patent: 9906326 (1999-02-01), None
“Hydrogen Sulfide Produced From Sulfate By Biological Reduction For Use In Metallurgical Operations”, de Vegt et al., “Society For Mining, Metallurgy, And Exploration, Inc.” Preprint 98-121, For Presentation at the SME Annual Meeting, Mar. 9-11, 1998.
Buisman Cees Jan Nico
Dijkman Henk
Hertzog Ardith E
Paques Bio Systems B.V.
Silverman Stanley S.
Young & Thompson
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