Additives to reduce phosphorus excretion and phosphorus solubility in poultry and swine manure
January 1, 2004
In the past 20 years, scientists have realised that environmental contamination by non-point source nutrients is a significant problem and its control is not easily managed. Manure phosphorus was...
Effects of duration and intensity of aeration on solids decomposition in pig slurry for odour control
January 1, 2004
A 30 day laboratory scale experiment was carried out using three different aeration rates, i.e. +35 mV oxidation reduction potential (ORP: standard hydrogen electrode), 1·0, and 3·0 mg[O2]...
Effects of manure removal strategies on odor and gas emissions from swine finishing
January 1, 2004
Odor, ammonia (NH3) and hydrogen sulfide (H2S) concentrations and emission rates were measured in two small rooms of finishing pigs with different manure removal strategies. The strategies included...
Effect of aluminum chloride and dietary phytase on relative ammonia losses from swine manure
January 1, 2004
Ammonia (NH3) losses from swine manure contribute to odor problems, decrease animal productivity, and increase the risk of acid rain deposition. This study was conducted to determine whether aluminum...
Synthetic covers for emissions control from earthen embanked swine lagoons – Part I: Positive pressure lagoon cover
January 1, 2004
An air-supported cover of 0.35-mm vinyl coated fabric was installed on a 29- x 39-m earthen-embanked swine lagoon. At a normal operating pressure of 80 to 100 Pa, leakage rate (air supplied to keep...
Effects of operating temperature and supplemental nutrients in a pilot-scale agricultural biofilter
January 1, 2004By O.G. Clark
In this study, the objective was to determine if different operating temperatures and/or the addition of supplemental inorganic nutrients affected the odour removal capacity of two pilot-scale,...
Emissions of N2O and CH4 during the composting of liquid swine manure
January 1, 2004By C. Wagner-Riddle
Composted organic wastes have been shown to reduce emissions of N2O and CH4, but little is known about the release of these gases during the composting process. This research examined the emissions...
Synthetic covers for emissions control from earthen embanked swine lagoons – part II: Negative pressure lagoon cover
January 1, 2004
One of the significant odor sources on swine farms is manure storage. This study investigated reducing odor and gas emissions from a 29- x 39-m anaerobic swine lagoon by capturing gases beneath a...
Kinetics of ammonia removal in a pilot-scale biofilter
January 1, 2004
A mobile, skid-mounted biofilter was designed and built to determine the kinetics of ammonia oxidation at a modern 2400-sow farrow-to-wean unit. The biofilter system consisted of a variable-speed...
Excretion of major odor-causing and acidifying compounds in response to dietary supplementation of chicory inulin in growing pigs
January 1, 2004
The excretion of major odor-causing and acidifying compounds in response to dietary supplementation of chicory inulin extract was investigated with six Yorkshire barrows, with an average initial BW...
Dust and odor emissions from tunnel ventilated swine buildings in North Carolina and comparison of different odor evaluation methods
January 1, 2004
Tunnel ventilation of swine buildings conveys odourous dust and gases out of the production buildings. Measurement of dust and odour levels and other environmental parameters is necessary for...
Ammonia emissions from swine houses in the Southeastern United States
January 1, 2004
Ammonia (NH3) from confined animal feeding operations is emitted from several sources including lagoons, field applications, and houses. This paper presents studies that were conducted to evaluate...
