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...
Evaluation of vegetative filter strips for swine lagoon wastewater
January 1, 1998By David T. Hill
Vegetative filter strips (VFS), on slopes of 5 and 11%, were used as a means of treating wastewater effluent from the second cell of a swine waste anaerobic lagoon system. Wastewater samples from...
An inflatable cover for a concrete manure storage in a swine facility
January 1, 1998
This study demonstrated that an air supported inflatable manure storage cover could be an economical and effective method for reducing odour emission into the atmosphere. To construct this inflatable...
Modeling ammonia volatilization from surface-applied swine effluent
January 1, 1998By D. L. Nofziger
Ammonia volatilization is an important issue in agricultural production and environmental protection. Experimental methods and numerical models exist to estimate the rate and amount of ammonia...
Volatile fatty acid emission during composting of swine waste amended with sawdust as a measure of odor potential
January 1, 1998
Offensive odours which evolve during the decomposition of swine waste have resulted in complaints from neighbours in agricultural areas. This study chronologically monitored the emissions of volatile...
