Conference Papers & Presentations
My interests are in the development of sustainable livestock manure management systems, air and water quality control engineering, bio-energy or bio-fuels, and livestock odor emission control technologies.
P.M. Ndegwa, D.W. Hamilton, J.A. Lalman, H.J. Cumba. 2005.
Treatment of Low Strength Swine Waste using Anaerobic Sequencing Batch Reactors (ASBRs).. ASAE Paper No. 054081. ASAE International Meeting, Tampa, Florida, USA.
Hamilton, D.W., S.D. Carter,P.M. Ndegwa,H.J. Cumba. 2005.
Emission of Nitrogenous Gases from Simulated Swine Manure Stabilization Ponds. ASAE Paper No. 054030. ASAE International Meeting, Tampa, Florida, USA.
Zhu, J., Z. Zhang, P.M. Ndegwa. 2003.
Evaluation of the Hydrometer Method to Determine Swine Manure Nutrient Content. Presented and published in proceedings of the 9th International Symposium on Animal, Agric. and Food Processing Wastes. Oct. 12-15, 2003, Durham, NC.
Ndegwa, P.M., J. Zhu. 2003.
Novel Procedures for Accurate Sampling of Swine Manures. Presented and published in proceedings of the 9th International Symposium on Animal, Agricultural and Food Processing Wastes. October 12-15, 2003, Durham, NC.
Hamilton, D.W, I.N. Kourtchev, P.M. Ndegwa, H.J. Cumba, F. Gioelli. 2003.
Simulation of Anaerobic/Facultative Lagoon Performance using a 1,000-Liter Pilot Facility. ASAE Paper No. 034155. ASAE International Meeting, Las Vegas, Nevada, USA.
Ndegwa, P.M. 2003.
Limitations of Orthophosphates Removal from Swine Manure during Batch-Aeration Treatments. ASAE Paper No. 034153. ASAE International Meeting, Las Vegas, Nevada, USA.
Ndegwa, P.M., J. Zhu, A. Luo. 2002.
Enhanced Phosphorus Removal in Swine Manure using Aerated Batch-Reactors. ASAE Paper No. 024097. ASAE-CGIR Congress Annual International Meeting, Chicago, Illinois, USA.
Ndegwa, P.M., J. Zhu, A. Luo. 2001.
Temperature effects on Phosphorus Removal in Swine Manure Under Aeration Treatment. ASAE Paper No. 012276. ASAE International Meeting, Sacramento, California, USA.
Ndegwa, P.M., J. Zhu, A. Luo. 2000.
Improved Handling of Swine Manure via Chemically Enhanced Natural Sedimentation. ASAE Paper No. 004140. ASAE Intern. Meeting, Milwaukee, WI.
Ndegwa, P.M., J. Zhu, A. Luo. 2000.
Solids-Liquid Separation of Swine Manure for Odor Control. ASAE Paper No. 004076. ASAE International Meeting, Milwaukee, Wisconsin.
Luo, A., J. Zhu, P.M. Ndegwa. 2000.
Fluctuations of Phosphorus in Swine Manure during Anaerobic and Aerobic Processes. ASAE Paper No. 004122. ASAE International Meeting, Milwaukee, Wisconsin.
Luo, A., J. Zhu, P.M. Ndegwa. 2000.
Isolation of Bacteria able to Utilize Odorous Compounds as Sole Carbon and Energy Source from Swine Manure. ASAE Paper No. 008003. ASAE International Meeting, Milwaukee, Wisconsin.
Ndegwa, P.M., S.A. Thompson, W.C. Merka. 1999.
A Dynamic Simulation Model of in-situ Composting of Caged Layers’ Manure. Presented at Southern Poultry Science Society Conference on Avian Diseases, January 18-19, 1999 (Abstract S7).
Ndegwa, P.M., S.A.Thompson, K.C. Das. 1998.
Effects of Stocking Density and Feeding Level on Vermicomposting of Biosolids. Proceedings of Composting in the Southeastern Conference and Expo. Athens, GA, September 9-11.
Thompson, S.A, W.C. Merka, P.M. Ndegwa. 1997.
In-house Deep-Litter Manure Management System. ASAE Paper No.974070. ASAE International Meeting, Minneapolis, MN.
Thompson, S.A., W.C. Merka, P.M. Ndegwa. 1991.
Fractionation of poultry litter for enhanced utilization. Presented at Conference on Environmentally Sound Agriculture. Orlando, FL, 16‑18 April.
"Something in the Air"
Dr. Pius Ndegwa
Biological Systems Engineering
Washington State University
LJSmith 202, P.O. Box 64120
Pullman, Wasington 99164-6120
Phone:
509 335-8167
Fax:
509 335-2722
Electronic Mail:
ndegwa@wsu.edu