ECN publication
Bepaling van de ammoniakemissie uit geruimde varkensstallen
Published by: Publication date:
ECN 1998
ECN report number: Document type:
ECN-C--98-018 ECN publication
Number of pages: Full text:
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As a consequence of the outbreak of classical swine fever in thebeginning of 1997 in the Netherlands, almost all pig stables were emptied in the eastern part of the province Noord-Brabant. Pigpens contributed for about 60% to the emission of ammonia in the area. Therefore it was expected, that the ammonia concentration would have substantially declined. Because this reduction was not observed at monitoring sites, dedicated research was performed at the end of 1997 to determine whether the empty pigsty still emits ammonia. In this report the results on the research on the emissions of such empty stables are described. The emissions were determined from plume measurements using a fast ammonia sensor developed in-house. The sensor was driven wind downwards along the empty stables. Almost all farms scanned showed a detectable emission. The emission of pigpens still in use was much higher than the empty ones. However, the emission of empty pigpens was significant and estimations for the summertime indicate emission rates that would be comparable to that of stables containing pigs. It is likely that the residual emission is produced by the manure which was not removed from the stables. At the time of measurement less ammonia was emitted by the empty, unheated stables. 5 refs.

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