Phil Westerman

Professor Emeritus

Retired 2010
  • 919-515-6742

 Philip W. Westerman was a professor, researcher and extension engineer in the Biological and Agricultural Engineering Ddepartment at North Carolina State University and is internationally recognized for his contributions to the understanding of the principal mechanisms important to animal waste management and for meticulous work in determining the basic properties of waste products and their interactions with the environment. His research publication on land treatment of animal wastes, nutrient availability for crop fertilization, effects of animal waste utilization on quality of runoff and drainage waters, and alternative waste treatment technologies are widely referenced. He has also made significant contributions in the areas of water treatment and waste management for intensive fish production systems.

He was selected as one of three NCSU faculty members to serve on a 20-member multi-disciplinary advisory panel to provide input for the development and implementation of a $17.5 million project for developing “Environmentally Superior Technologies” for management of swine manure.

The result of Westerman’s work has been applied to the development of guidelines for users, extension publications, and environmental regulations. He and a former graduate student have a patent for the “Apparatus and Method for Removing Phosphorus from Waste Lagoon Effluent.” He has authored or co-authored 200 refereed journal articles, conference proceedings, technical papers and reports, and abstracts.

Westerman is a Fellow member of ASAE, and has a long record of continuous committee work involving the Structures and Environment and Soil and Water divisions. He has served as associate editor for both divisions, and chaired the Agricultural Waste Management (SE-412), Land Application of Waste (SW-263) committees and the Fellows (E-08)committee.

He has received citations for excellence in manuscript review by both ASABE and the Journal for Environmental Quality. Other awards and honors include a USDA Honors award; University of Kentucky – Alpha Epsilon Outstanding Alumni award; NC Cooperative Extension Service – Extension Education award; and he received the ASABE Gunlogson Countryside Engineering Award for his outstanding contributions to the agricultural community through the development of livestock waste management and treatment systems. Ho also received a Certificate of Appreciation that honors his program committee work involved with three international symposia on agricultural and food processing wastes, one as program chair.

Education

Ph.D. 1974

Agricultural Engineering

University of Kentucky

M.S. 1972

Agricultural Engineering

University of Kentucky

B.S. 1969

Agricultural Engineering

University of Kentucky

Publications

Acidifier application rate impacts on ammonia emissions from US roaster chicken houses
Shah, S. B., Grimes, J. L., Oviedo-Rondon, E. O., & Westerman, P. W. (2014), Atmospheric Environment, 92, 576–583. https://doi.org/10.1016/j.atmosenv.2013.01.044
Acidifier dosage effects on inside ammonia concentrations in roaster houses
Shah, S. B., Oviedo-Rondon, E. O., Grimes, J. L., Westerman, P. W., & Campeau, D. (2013), Applied Engineering in Agriculture, 29(4), 573–580. https://doi.org/10.13031/aea.29.9904
Ancillary impacts of different acidifier application rates in roaster houses
Shah, S. B., Westerman, P. W., Grimes, J. L., Oviedo-Rondon, E. O., & Campeau, D. (2013), Journal of Applied Poultry Research, 22, 565–573. https://doi.org/10.3382/japr.2012-00693
Live performance of roasters raised in houses receiving different acidifier application rates
Oviedo-Rondon, E. O., Shah, S. B., Grimes, J. L., Westerman, P. W., & Campeau, D. (2013), Journal of Applied Poultry Research, 22(4), 922–928. https://doi.org/10.3382/japr.2012-00716
Nitrogen mass balance in commercial roaster houses receiving different acidifier application rates
Shah, S. B., Grimes, J. L., Oviedo-Rondon, E. O., Westerman, P. W., & Campeau, D. (2013), Journal of Applied Poultry Research, 22(3), 539–550. https://doi.org/10.3382/japr.2012-00704
Ammonia emissions from broiler cake stockpiled in a naturally ventilated shed
Yao, H., Shah, S. B., Willits, D. H., Westerman, P. W., Li, L. W., & Marshall, T. K. (2011), Transactions of the ASABE, 54(5), 1893–1904.
Phosphorus recovery from covered digester effluent with a continuous-flow struvite crystallizer
Westerman, P. W., Bowers, K. E., & Zering, K. D. (2010), (Vol. 26, pp. 153–161).
Swine anaerobic lagoon nutrient concentration variation with season, lagoon level, and rainfall
Westerman, P. W., Ogejo, J. A., & Grabow, G. L. (2010), (Vol. 26, pp. 147–152).
Impact of land application method on ammonia loss from hog lagoon effluent
Shah, S. B., Balla, B. K., Grabow, G. L., Westerman, P. W., & Bailey, D. E. (2009), Applied Engineering in Agriculture, 25(6), 963–973.
Design and evaluation of a regenerating scrubber for reducing animal house emissions
Shah, S. B., Westerman, P. W., Munilla, R. D., Adcock, M. E., & Baughman, G. R. (2008), Transactions of the ASABE, 51(1), 243–250.
Measurement and analysis of ammonia and hydrogen sulfide emissions from a mechanically ventilated swine confinement building in North Carolina
Blunden, J., Aneja, V. P., & Westerman, P. W. (2008), Atmospheric Environment, 42(14), 3315–3331. https://doi.org/10.1016/j.atmosenv.2007.06.040
Wood chips and wheat straw as alternative biofilter media for denitrification reactors treating aquaculture and other wastewaters with high nitrate concentrations
Saliling, W. J. B., Westerman, P. W., & Losordo, T. M. (2007), Aquacultural Engineering, 37(3), 222–233. https://doi.org/10.1016/j.aquaeng.2007.06.003
A review of gaseous ammonia emissions from slurry pits in pig production systems
Griffing, E. M., Overcash, M., & Westerman, P. (2007), Biosystems Engineering, 97(3), 295–312.
Ammonia adsorption in five types of flexible tubing materials
Shah, S. B., Grabow, G. L., & Westerman, P. W. (2006), Applied Engineering in Agriculture, 22(6), 919–923.
Measuring ammonia concentrations and emissions from agricultural land and liquid surfaces: A review
Shah, S. B., Westerman, P. W., & Arogo, J. (2006), Journal of the Air & Waste Management Association, 56(7), 945–960. https://doi.org/10.1080/10473289.2006.10464512
Design of cone-shaped fluidized bed struvite crystallizers for phosphorus removal from wastewater
Bowers, K. E., & Westerman, P. W. (2005), Transactions of the ASAE, 48(3), 1217–1226.
Management considerations for organic waste use in agriculture
Westerman, P. W., & Bicudo, J. R. (2005), Bioresource Technology, 96(2), 215–221. https://doi.org/10.1016/j.biortech.2004.05.011
On-farm performance of two solids/liquid separation systems for flushed swine manure
Westerman, P. W., & Arogo, J. (2005), Applied Engineering in Agriculture, 21(4), 707–717.
Performance of a pond aeration system for treating anaerobic swine lagoon effluent
Westerman, P. W., & Arogo, J. (2005), Applied Engineering in Agriculture, 21(3), 505–516.
Performance of cone-shaped fluidized bed struvite crystallizers in removing phosphorus from wastewater
Bowers, K. E., & Westerman, P. W. (2005), Transactions of the ASAE, 48(3), 1227–1234.
Comparing ammonium ion dissociation constant in swine anaerobic lagoon liquid and deionized water
Arogo, J., Westerman, P. W., & Liang, Z. S. (2003), Transactions of the ASAE, 46(5), 1415–1419.
A review of ammonia emissions from confined swine feeding operations
Arogo, J., Westerman, P. W., & Heber, A. J. (2003), Transactions of the ASAE, 46(3), 805–817.
Ammonia emissions from anaerobic swine lagoons: Model development
De Visscher, A., Harper, L. A., Westerman, P. W., Liang, Z., Arogo, J., Sharpe, R. R., & Van Cleemput, O. (2002), Journal of Applied Meteorology, 41(4), 426–433.
Application of mixed and aerated pond for nitrification and denitrification of flushed swine manure
Westerman, P. W., & Bicudo, J. R. (2002), Applied Engineering in Agriculture, 18(3), 351–358.
Modeling ammonia emission from swine anaerobic lagoons
Liang, Z. S., Westerman, P. W., & Arogo, J. (2002), Transactions of the ASAE, 45(3), 787–798.
Reduction of enteric microbes in flushed swine wastewater treated by a biological aerated filter and UV irradiation
Hill, V. R., Kantardjieff, A., Sobsey, M. D., & Westerman, P. W. (2002), Water Environment Research, 74(1), 91–99. https://doi.org/10.2175/106143002X139785
Design and analysis of a pilot scale biofiltration system for odorous air
Classen, J. J., Young, J. S., Bottcher, R. W., & Westerman, P. W. (2000), Transactions of the ASAE, 43(1), 111–117.
Tangential flow separation and chemical enhancement to recover swine manure solids, nutrients and metals
Westerman, P. W., & Bicudo, J. R. (2000), Bioresource Technology, 73(1), 1–11. https://doi.org/10.1016/S0960-8524(99)00148-0
Upflow biological aerated filters for the treatment of flushed swine manure
Westerman, P. W., Bicudo, J. R., & Kantardjieff, A. (2000), Bioresource Technology, 74(3), 181–190. https://doi.org/10.1016/S0960-8524(00)00028-6
Nutrient content and sludge volumes in single-cell recycle anaerobic swine lagoons in North Carolina
Bicudo, J. R., Safley, L. M., & Westerman, P. W. (1999), Transactions of the ASAE, 42(4), 1087–1093.
Aeration of livestock manure slurry and lagoon liquid for odor control: a review
Westerman, P. W., & Zhang, R. H. (1997), Applied Engineering in Agriculture, 13(2), 245–249.
Water treatment and waste characterization evaluation of an intensive recirculating fish production system
Twarowska, J. G., Westerman, P. W., & Losordo, T. M. (1997), Aquacultural Engineering, 16(3), 133–147. https://doi.org/10.1016/S0144-8609(96)01022-9
Evaluation of various biofilters in an intensive recirculating fish production facility
Westerman, P. W., Losordo, T. M., & Wildhaber, M. L. (1996), Transactions of the ASAE, 39(2), 723.
Swine-lagoon seepage in sandy soil
Westerman, P. W., Huffman, R. L., & Feng, J. S. (1995), Transactions of the ASAE, 38(6), 1749.
Swine lagoon effluent applied to 'Coastal Bermudagrass': III. irrigation and rainfall runoff
Westerman, P. W., Overcash, M. R., Evans, R. O., King, L. D., Burns, J. C., & Cummings, G. A. (1985). Swine lagoon effluent applied to ’Coastal Bermudagrass’: III. irrigation and rainfall runoff. Journal of Environmental Quality, 14(1), 22. https://doi.org/10.2134/jeq1985.00472425001400010004x,
Effects of applying swine lagoon effluent to Coastal Bermudagrass at high rates for ten years
Westerman, P. W., Burns, J. C., King, L. D., Evans, R. O., & Safley, L. M. (1983), Paper (American Society of Agricultural Engineers), (2123), 32.

View all publications via NC State Libraries

Grants

Waste Management in Hog Lagoons Using Bio-Magic
Blue and Green Solutions, Inc.(9/15/09 - 12/15/09)
Effective strategies for biogas and nutrient management resulting from anaerobic digestion in covered swine lagoons
US Dept. of Agriculture (USDA)(9/01/08 - 6/30/12)
Phosphorus Recovery From Concentrated Wastewater With a Continuous-Flow Struvite Crystallizer
National Pork Board(5/01/07 - 5/01/09)
Manure and Nutrient Characterization for Flushed Manure for Use in Design Criteria for Innovative Treatment Technologies
NC Pork Council(7/01/06 - 6/30/07)
Litter Amendment and Improved Diet Impacts on Broiler Ammonia Emissions and Productivity
US Dept. of Agriculture (USDA)(1/01/06 - 12/31/10)
A Regenerating Scrubber for Reducing Animal House Emissions
NCSU Animal and Poultry Waste Management Center(10/01/04 - 6/30/06)
Determining Plant-Available Nitrogen in Hog Anaerobic Lagoon Effluent Applied with Traveling Gun and Drag Hose Systems
NCSU Water Resources Research Institute(6/01/05 - 12/31/06)