Influence of anaerobic pre-conditioning on phosphorus removal in swine manure by aeration
January 1, 2002By JUN ZHU
A feasibility study with three pre-conditioning times was carried out in Waseca, Minnesota, USA, to examine the effect of anaerobic pre-treatment on phosphorus removal by aeration. The results showed...
Dynamic simulation model of nitrogen fluxes in pig housing and outdoor storage facilities
January 1, 2002By P. Berthiaume
Many factors in pig production, including genetics, feeding efficiency, feed composition, feed distribution method, environmental control, and waste management, affect the nitrogen content of pig...
Removal of carbon, nitrogen, and phosphorus in pig manure by continuous and intermittent aeration at low redox potentials
January 1, 2002By JUN ZHU
A laboratory experiment was conducted to study the effect of intermittent and continuous aeration at an airflow rate of 0.0667 lmin-1 l-1 of manure on redox potential, pH, organic carbon, total...
Characterizing ammonia emissions from swine farms in eastern North Carolina: Part 2 – Potential environmentally superior technologies for waste treatment
January 1, 2002By Aneja
The need for developing environmentally superior and sustainable solutions for managing the animal waste at commercial swine farms in eastern North Carolina has been recognized in recent years....
Phosphorus stratification and potential for runoff loss following long term manure application
January 1, 2002By Martha Mamo
Understanding phosphorus (P) accumulation and stratification in surface soil following manure application is critical for runoff P loss abatement. The objectives of this study were to predict soil P...
Emissions of ammonia, hydrogen sulfide, and odor before, during, and after slurry removal from a deep-pit swine finisher
January 1, 2002
It is a common practice in the midwestern United States to raise swine in buildings with under-floor slurry storage systems designed to store manure for up to one year. These so-called...
Influence of composts and liquid pig manure on CO2 and N2O emissions from a clay loam soil
January 1, 2002
Application of raw animal manure to agricultural land has resulted in environmental and health problems. Alternatives, such as composting, are now being developed to alleviate this situation....
Odor flux measurements at a facultative swine lagoon stratified by surface aeration
January 1, 2002
Odour-related complaints are a major concern of pork producers. Open manure storage and treatment facilities such as uncovered anaerobic treatment lagoons are a major contributor to odour nuisance....
Fate of Salmonella following application of swine manure to tile-drained clay loam soil
January 1, 2002
Land application of animal manure is an important means of utilization of nitrogen and phosphorus. However, the presence of pathogens in manure and their occasional leaching into subsurface water has...
Nitrous oxide and ammonia fluxes in a soybean field irrigated with swine effluent
January 1, 2002
In the USA, swine (Sus scrofa) operations produce more than 14 Tg of manure each year. Approximately 30% of this manure is stored in anaerobic lagoons before application to land. While land...
