Quicklime Stabilization of Belt-separated Swine Manure Solids
January 1, 2003
Quicklime may be used to raise the pH of manure solids thus initiating a stabilizing effect of killing pathogens, reducing vector attraction, and controlling odors. A range of 5% to 15% quicklime...
Evaluation of the Carbofil Inernational Downflow Tube Reactor for Treatment of Swine Waste
January 1, 2003
The Carbofil® biological reactor is a type of down-draft reactor that uses impellers to entrain oxygen and increase the opportunity for that oxygen to dissolve in wastewater. The oxygen is used...
Using a Soil Hydrometer to measure the Nitrogen and Phosphorus Contents in Pig Slurries
January 1, 2003By JUN ZHU
The hydrometer method to indirectly measure the nutrient contents, i.e. total nitrogen Nt, and total phosphorus Pt of pig slurries was examined against both single and multiple slurry sources. The...
Movement of faecal bacteria through the vadose zone
January 1, 2003By Adrian Unc
The impact of biosolid and soil type on the movement of faecal coliforms through the vadose zone was investigated following the application of animal manure to soil. Two types of biosolid, solid...
Extractable Phosphorus Following Soil Amendment With Manure From Swine Fed Low-Phytate Corn
January 1, 2003By H. T. Gollany
Manure application rate recommendations have been based almost exclusively on nitrogen (N) management considerations, which can result in over-application of phosphorus (P) and its accumulation in...
Solids, organic load and nutrient concentration reductions in swine waste slurry using a polyacrylamide (PAM)-aided solids flocculation treatment
January 1, 2003
Increased swine production results in concentration of wastes generated within a limited geographical area, which may lead to land application rates exceeding the local or regional assimilatory...
Quantitation of estrogens in ground water and swine lagoon samples using solid-phase extraction, pentafluorobenzyl/trimethylsilyl derivatizations and gas chromatography-negative ion chemical ionization tandem mass spectrometry
January 1, 2003By Dennis D. Fine
A method was developed for the confirmed identification and quantitation of 17(beta)-estradiol, estrone, 17(alpha)-ethynylestradiol and 16(alpha)-hydroxy-17(beta)-estradiol (estriol) in ground water...
Comparing ammonium ion dissociation constant in swine anaerobic lagoon liquid and deionized water
January 1, 2003By Jactone Arogo
The dissociation constant of ammonium ion both in deionized water and swine anaerobic lagoon liquid was determined experimentally in a convective emission chamber at three temperatures (15 degrees...
Comparative investigation of sequentially extracted phosphorus fractions in a sandy loam soil and a swine manure
January 1, 2003By Z. He
Sequential fractionation is one of the most common methods used to investigate phosphorus (P) forms in soils. The strategy can be used for evaluating bioavailability of soil P and for investigating...
Optimization of phosphorus precipitation from swine manure slurries to enhance recovery
January 1, 2003By Robert Burns
Laboratory experiments were conducted using magnesium chloride (MgCl2·6H2O, 64% solution) to force the precipitation of phosphorus and reduce the concentration of soluble phosphorus (PO4 3?) in two...
Interactive effects of composts and liquid pig manure with added nitrate on soil carbon dioxide and nitrous oxide emissions from soil under aerobic and anaerobic conditions
January 1, 2003
The composting process results in immobilization of inorganic N. When high-N-demanding crops are grown in compost-amended soils, additional N fertilizer is often applied. The combination of elevated...
Effects of bioreactor temperature and time on odor-related parameters in aerated swine manure slurries
January 1, 2003
Previous studies have linked odor generation from swine manure to some characteristics of the liquid manure such oxidation-reduction potential (ORP), five-day biochemical oxygen demand (BOD5),...
