Biofiltration using partially stabilized hog manure compost
January 1, 1997
Hog manure amended with sawdust (moisture 56-60% wet basis, C/N 19-21) was composted in pilot-scale vessels using continuous aeration (CA) and intermittent aeration (IA) for 3 and 4 weeks. In two...
Odor emission from a swine finishing facility with a surface-aerated lagoon
January 1, 1997
Odour emission from a 6 000 head swine grow-finish facility was measured in May 1998. Lagoon odour emission with simulated wind speeds of 1.1 m/s in a new buoyant convective flux chamber ranged from...
Laboratory study of surface aeration of anaerobic lagoons for odor control of swine manure
January 1, 1997
Surface aeration of pig manure stored in anaerobic lagoons for odour control was experimentally studied in the laboratory. The effects of different aeration rates and depths on reduction in emission...
Estimating ammonia loss from sprinkler-applied swine effluent
January 1, 1997
Volatilization of NH3 from sprinkler-applied effluent is a major N loss pathway in the Great Plains region, but there is disagreement as to how much of the total NH4-N applied in effluent is lost....
Ammonia and nitrous oxide emissions from sprinkler irrigation applications of swine effluent
January 1, 1997
In the USA, swine operations produce more than 14 Tg of manure each year. About 30% of this manure is stored in anaerobic lagoons before effluent applications to land. Although land application is...
Seasonal variation in microbial communities and organic malodor indicator compound concentrations in various types of swine manure storage systems
January 1, 1997
Anaerobic manure storage systems are one of the major contributors to the odour and environmental pollution associated with swine (Sus scrofa) production systems. The microbial ecology of manure...
Environment - Air
Hydrogen sulphide emission from two large pig-finishing buildings with long-term high-frequency measurements
January 1, 1997
Hydrogen sulfide (H2S) is a common toxic air pollutant and is emitted from decomposing manure at animal facilities. However, there have been only a few studies of H2S emissions from animal buildings,...
Odor removal using biomass filters
January 1, 1997By Steve Hoff
An experimental biomass filter system was built by attaching a full-scale testing chamber to an existing 4-room swine nursery facility to investigate various biomass filters. Four independent biomass...
Determination of odor-annoyance-free setback distances from animal production sites: Part I. Review and experiment
January 1, 1997
The objective of the study was to develop a science-based model, OFFSET (Odor from Feedlot - Setback Estimation Tool), to establish setback distances from animal production sites based on the use of...
Composting hog manure/sawdust mixtures using intermittent and continuous aeration: ammonia emissions
January 1, 1997
Odorous emissions from manures have become a significant problem. Preliminary work on composting hog manure with sawdust had indicated that intermittent aeration could reduce ammonia emissions during...
Nitrogen cycling through swine production systems: ammonia, dinitrogen, and nitrous oxide emissions
January 1, 1997By Lowry A. Harper
Ammonia (NH3) emissions from animal systems have become a primary concern for all of livestock production. The purpose of this research was to establish the relationship of nitrogen (N) emissions to...
Manure-Phosphorus in Soil: Detection and Mobility of Phytate
January 1, 1996
Annual swine effluent application in western Oklahoma for 11 consecutive years did not lead to significant accumulation of soil phosphorus. Similar trend was shown in a century-old field experiment...
