acidified absorption water
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United States of America Patent
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Jul 16, 2013
Grant Date -
Jan 31, 2013
app pub date -
Jul 25, 2011
filing date -
Jul 25, 2011
priority date (Note) -
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Abstract
The processes are utilized to recover ammonium from waste water using CO2 acidified absorption water. The process is particularly suited for utilization of cellular matter and a CO2 rich tail gas from a syngas fermentation process and derives significant benefit from the recovery of ammonium bicarbonate and ammonium carbonate. Ammonia and ammonium are recovered from the treatment of the syngas as an ammonium rich solution, at least a portion of which is recycled to the fermentation zone to aid in the production of liquid products. A carbon dioxide rich gas produced by fermentation is used to capture the ammonia and ammonium, forming the ammonium rich solution.
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