Rates and controls on denitrification in an agricultural soil fertilized with liquid lagoonal swine waste
January 1, 1998
Under laboratory conditions, we studied rates and controls on denitrification and denitrification potential (denitrifying enzyme activity, DEA) in agricultural soils in the southeastern United States...
Odorous emissions and odor control in composting swine manure/sawdust mixes using continuous and intermittent aeration
January 1, 1998By David L. Elwell
Swine manure mixed with sawdust was composted in 205 L pilot-scale vessels. Four runs with a total of 22 vessel studies were made during 1998 and 1999. Composting was conducted, with either...
Environment - Air
Soil infiltration and wetland microcosm treatment of liquid swine manure
January 1, 1998
Management systems are needed to minimize water quality concerns associated with liquid swine manure from large swine production facilities. Experiments were conducted to investigate the removal of...
Carbon dioxide and nitrous oxide emissions following fall and spring applications of pig slurry to an agricultural soil
January 1, 1998
In Quebec, Canada, most pig slurry is applied to agricultural soils in the spring and fall. A study was initiated to compare the impact of the contrasting spring and fall weather conditions on CO2...
Denitrification following land application of swine waste to bermudagrass pasture
January 1, 1998By D. G. Sullivan
Nitrogen (N) losses following land-applied animal wastes present an environmental and economical dilemma for producers. Gaseous N losses from pastureland contribute to global warming, ozone...
Measurement and analysis of atmospheric ammonia emissions from anaerobic lagoons
January 1, 1998
Ammonia-nitrogen flux (NH3-N = (14/17)NH3) was determined from six anaerobic swine waste storage and treatment lagoons (primary, secondary, and tertiary) using the dynamic chamber system....
Distribution of ammonium-N in the water-soil interface of a surface-flow constructed wetland for swine wastewater treatment
January 1, 1998
Most livestock wastewaters treated in constructed wetlands are typically rich in ammonium N. The objective of this study was to evaluate the soil-water ammonium distribution and the diffusive flux...
Production of odorous, volatile compounds during composting of hog manure amended with sawdust
January 1, 1998
Gas chromatographic analysis of volatile fatty acids (VFAs) in mixtures of swine manure and sawdust and in condensate samples of gasses emitted during composting of these mixtures was conducted. Two...
Seepage losses and nitrogen export from swine-waste lagoons: a water balance study
January 1, 1998
Seepage losses from animal-waste lagoons could affect ground water quality. Water balance methods were used to study seepage and nitrogen export from three swine-waste lagoons in southwestern...
Ammonia emissions from composting hog manure amended with sawdust under continuous and intermittent aeration
January 1, 1998
Ammonia emissions during composting of hog manure mixed with sawdust were studied in four runs comprising a total of 22 pilot-scale reactor vessels. These four runs extended previous work and both...
