Liquid purification or separation – Processes – Treatment by living organism
Reexamination Certificate
2008-06-05
2010-10-12
Prince, Fred (Department: 1797)
Liquid purification or separation
Processes
Treatment by living organism
C210S631000, C210S903000, C423S237000
Reexamination Certificate
active
07811455
ABSTRACT:
A method for the removal and sequestration of ammonia nitrogen from anaerobic fermentation effluent while producing a higher BTU biogas. The method includes the steps of removing the slurry from the digester, stripping the ammonia from the slurry or portion thereof with a high BTU biogas, blending the stripped ammonia with the digesters biogas to remove the carbon dioxide and precipitate ammonium bicarbonate/carbonate as a solid while producing a high Btu biogas, a portion of which is used to strip the ammonia and CO2from the slurry. The process removes ammonia nitrogen from the digester effluent while producing a high Btu biogas and a solid ammonium bicarbonate/carbonate product. Ammonia stripping is accomplished with a recycled stripping gas deficient in CO2and ammonia that is capable of removing the CO2and ammonia from solution by virtue of the lower partial pressures of CO2and ammonia in the stripping unit.
REFERENCES:
patent: 4104131 (1978-08-01), Didycz et al.
patent: 4137158 (1979-01-01), Ishida et al.
patent: 4372856 (1983-02-01), Morrison
patent: 4710300 (1987-12-01), Kristoufek
patent: 4781836 (1988-11-01), Thiele et al.
patent: 4824571 (1989-04-01), Ducellier et al.
patent: 4869819 (1989-09-01), Thiele et al.
patent: 5529692 (1996-06-01), Kubler
patent: 5702572 (1997-12-01), Fujimura et al.
patent: 5885460 (1999-03-01), Dague et al.
patent: 6299774 (2001-10-01), Ainsworth et al.
patent: 6368849 (2002-04-01), Norddahl
patent: 6464875 (2002-10-01), Woodruff
patent: 6521129 (2003-02-01), Stamper et al.
patent: 6866779 (2005-03-01), Burke
patent: 6942798 (2005-09-01), Miller, III
patent: 7160456 (2007-01-01), Jarventie
patent: 7169821 (2007-01-01), Branson
patent: 7381389 (2008-06-01), Harada et al.
patent: 2004/0164021 (2004-08-01), Li et al.
Coyne Brian J.
Prince Fred
LandOfFree
Removal of ammonia from fermentation effluent and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Removal of ammonia from fermentation effluent and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Removal of ammonia from fermentation effluent and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4157711