Mass transfer coefficient for hydrogen sulfide emission from aqueous solutions and liquid swine manure
January 1, 1999
The mass transfer coefficient for hydrogen sulfide emission from an aqueous solution and liquid manure into the air was determined using a convective emission chamber where air temperature, velocity,...
Nutrient Removal from swine lagoon liquid by Lemma minor 8627
January 1, 1999By Jiayang Cheng
Nitrogen and phosphorus removal from swine lagoon liquid by growing Lemna minor 8627, a promising duckweed identified in previous studies, was investigated under in vitro and field conditions. The...
Field evaluation of a wet pad scrubber for controlling dust and odor emissions
January 1, 1999
An evaporative cooling pad system was installed upwind of exhaust fans and downwind of pigs in a tunnel ventilated finishing building to determine effectiveness in reducing dust, ammonia, and odours....
Persistence of zoonotic pathogens in surface soil treated with different rates of liquid pig manure
January 1, 1999By Sagar M. Goyal
Zoonotic pathogens found in land-applied livestock manure may persist in the soil and be transported by runoff into surface waters, contributing to degradation of water quality. Manure management...
Land application of animal manure and phosphorus cycling in soil
January 1, 1999
Repeated land application of animal manure at rates to satisfy N requirements for crops may increase soil P to levels that cause environmental concern. Biochemical and microbiological parameters are...
Effects of chemical amendments on the gaseous emissions from swine manure
January 1, 1999
Control of emission of gases such as ammonia (NH3), hydrogen sulfide (H2S), carbon dioxide (CO2) and methane (CH4) is a major concern for large-scale swine producers. The use of chemical amendments...
Struvite precipitation in anaerobic swine lagoon liquid: effect of pH and Mg : P ratio and determination of rate constant
January 1, 1999By Nathan O. Nelson
Because of increased concern about surface water eutrophication from nutrient-enriched agricultural runoff, many swine producers are encouraged to decrease application rates of waste-based P....
Soil chemical and microbiological properties in hay production systems: residual effects of contrasting N fertilization of swine lagoon effluent versus ammonium nitrate
January 1, 1999
This study characterized soil chemical and microbiological properties in hay production systems that received from 0 to 600 kg plant-available N (PAN) ha(-1) year(-1) from either swine lagoon...
Optimization of liquid swine manure sidedress rate and method for grain corn
January 1, 1999By B. R. Ball-Coelho
Sidedressing may provide a better window of opportunity for land application of liquid swine (Sus scrofa) manure than early spring or fall application. Rates could be fine-tuned to match crop N...
Swine manure odor control by the TOAST (trademarked) aerobic system
January 1, 1999
A novel aerobic animal waste treatment system (Tertiary Oxygen Activated Sludge Treatment - TOAST trademark) was operated on an pig farm in southern Minnesota, USA. The fully operational system was...
