Laboratory measurement of hydrogen sulfide and sulfur dioxide releases from swine manure of different solid contents
January 1, 2000
Releases rates of Hydrogen sulfide (H2S) and sulfur dioxide (SO2) from finishing swine manure of two different solid contents and two initial manure accumulation days were measured under laboratory...
Odor and gas emissions from anaerobic treatment of swine waste
January 1, 2000
Odour and gas emissions from commercial swine lagoons were measured using a buoyant convective flux chamber (BCFC). Normal- and lightly-loaded lagoons were selected to determine the effect of loading...
Swine operations: comparison of biological filter media for odor control and wastewater treatment
January 1, 2000
Researchers at Mississippi State University have been studying the effectiveness of the attached growth process for swine wastewater treatment and odor abatement for the past three years. Organic...
Correlation of odor detection thresholds with concentrations of hydrogen sulfide, ammonia and trace gases emitted from swine manure
January 1, 2000
Several odour measurement methods were used during a 42-day test of commercial manure additives. Air samples were taken biweekly from the ventilated headspaces of 39 laboratory reactors containing...
Solids-liquid separation of swine manure for odor control
January 1, 2000
Fresh swine manure was separated into seven different liquid portions with size-ranges; <2.0, <1.4, <1.0, <0.5, <0.25, <0.15 and <0.075 mm, respectively. The separation was...
Evaluation of Biosafe as an additive to reduce odor from swine manure
January 1, 2000
Bench scale experiments were performed to determine the effect of adding various amounts of the product Biosafe to swine manure. In particular, it was desired to determine if addition of Biosafe...
Comparison of the odour levels of biofiltered air and ambient farmyard air
January 1, 2000
Two experimental biofilters were used to determine whether an airstream treated by a biofilter could be distinguished from ambient farmyard air. Odourous air (mean of 958 OU measured using...
Ammonia emission from a large mechanically-ventilated swine building during warm weather
January 1, 2000
Ammonia (NH3) emission from a grow-finish swine (Sus scrofa) building with an underfloor manure storage pit was evaluated during warm weather during 26 June to 25 September. Average daily mean (ADM,...
Ventilation, feed, and loading methods effects on hydrogen sulfide emissions from swine slurry
January 1, 2000
Four treatments were evaluated for their effect on emission of H2S of swine slurry stored in simulated beneath floor pits. The treatments were: (1) batch load without ventilation; (2) batch load with...
The use of an air supported pneumatic structure to reduce earthen lagoon gas emissions
January 1, 2000
Gas emissions and odour control is an increasing concern as swine commercialization expands, since odour continues to be a limiting factor for future growth. Present odour control technologies for...
Malodor reduction in liquid swine manure treated in subsurface flow constructed wetlands
January 1, 2000
Anecdotal evidence has suggested that constructed wetlands can reduce malodor in liquid livestock wastes. This study quantified the concentrations of two malodorous compounds (dimethyl disulfide and...
Conceptual model for ammonia and odor production and ammonia emission from swine anaerobic lagoons
January 1, 2000
A model that predicts the concentration of ammonia and volatile fatty acids as odor indicators was developed for anaerobic lagoons using Monod kinetics. The model used average measured parameter...
