Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
CONCENTRATION OF URINE FROM FATTENERS COMBINED WITH AMMONIA REMOVAL BY SCRUBBING EXHAUST AIR OF A PIG HOUSE
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Pp. 584-589 in the Ninth International Animal, Agricultural and Food Processing Wastes Proceedings of the 12-15 October 2003 Symposium (Research Triangle Park, North Carolina USA), Publication Date 12 October 2003. 701P1203.(doi:10.13031/2013.15297)
Authors: H. C. Willers, R. W. Melse, and N. W. M. Ogink
Keywords: Ammonia, Air scrubber, Evaporation, Pig waste, Urine
In the Dutch Hercules project feces and urine from pigs are collected separately and treated in two
processes: feces are composted and urine is concentrated by water evaporation. Water unsaturated
exhaust air from the pig house is used for evaporation in a packed bed scrubber. The urine is
acidified with nitric acid to scrub ammonia from the air. In this way a concentrated N/K fertilizer
is produced from urine and ammonia is removed from the pig house exhaust air.
Experiments were conducted using a pilot scale packed bed scrubber in an experimental pig house.
The ammonia scrubbing efficiency and the evaporation rate were determined during one pig
fattening round of 112 days.