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Articles 1 - 3 of 3
Full-Text Articles in Engineering
A New Application For Fine Ground Rubber In The Control Of Odors From Livestock Manure Storage Structures, Lakshmi Koppolu, Richard K. Koelsch, Dennis D. Schulte, Crystal Powers, Dwaine Bundy
A New Application For Fine Ground Rubber In The Control Of Odors From Livestock Manure Storage Structures, Lakshmi Koppolu, Richard K. Koelsch, Dennis D. Schulte, Crystal Powers, Dwaine Bundy
Department of Biological Systems Engineering: Conference Presentations and White Papers
The purpose of this project was to quantify the odor and gas emission benefits of a fine ground rubber cover on laboratory scale manure storage units and to evaluate the ability of a fine ground rubber cover applied to a commercial swine manure storage unit to remain intact and functional over an extended period of time. A three-inch cover of fine ground rubber reduced odors by 77 to 99 percent from the manure storage tanks over a six-week period. However, consistent reductions of NH3 emissions were not observed and H2S emissions from all manure storage treatments were …
Ammonia And Hydrogen Sulfide Flux From Beef Cattle Pens: Implications For Air Quality Measurement Methodologies And Evaluation Of Emission Controls, Jacek A. Koziel, David B. Parker, Bok-Haeng Baek, Kevin J. Bush, Marty Rhoades, Zena Perschbacher-Buser
Ammonia And Hydrogen Sulfide Flux From Beef Cattle Pens: Implications For Air Quality Measurement Methodologies And Evaluation Of Emission Controls, Jacek A. Koziel, David B. Parker, Bok-Haeng Baek, Kevin J. Bush, Marty Rhoades, Zena Perschbacher-Buser
Jacek A. Koziel
Ammonia (NH 3 ) and hydrogen sulfide (H 2 S) are emitted from beef cattle feedlots with NH 3 being greater by nearly three orders of magnitude. Nearly 30% of the U.S. beef cattle are fed in the High Plains of Texas. Earlier research indicates that abatement technologies may be needed to significantly reduce NH 3 emissions. To date, little is known about the appropriate measurement methods to evaluate the effectiveness of NH 3 emission controls. In this research, we determined the (a) variability of NH 3 and H 2 S fluxes within a single pen and (b) the relationships …
Engineered Struvite Precipitation: Impacts Of Component-Ion Molar Ratios And Ph, Jun Wang, Joel Gerard Burken, Xiaoqi Zhang, Rao Y. Surampalli
Engineered Struvite Precipitation: Impacts Of Component-Ion Molar Ratios And Ph, Jun Wang, Joel Gerard Burken, Xiaoqi Zhang, Rao Y. Surampalli
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
Struvite precipitation has the potential for removing and recovering phosphorus from agricultural wastewater streams, such as concentrated animal feeding operations wastewater. However, impacts of anticipated component-ion molar ratios and potentially interfering ions are unknown as are the compounding pH relationship with respect to all potential complexes. This research experimentally investigates and mathematically models these factors. Emphasis is placed upon the composition of formed deposits and model validation with experimental data. Results show that calcium is a major interfering ion affecting the deposit composition, decreasing struvite purity. X-ray diffraction (XRD) and scanning electron microscopy + energy dispersive spectrometry were used to …