John Classen

Director of Graduate Programs

and Professor
  • 919-515-6755
  • Weaver Administration Bldg 112
  • View CV

Education

Ph.D 1995

Agricultural Engineering

Texas A&M University

M.S. 1990

Agricultural Engineering

University of Arkansas

B.S. 1987

Agricultural Engineering

University of Arkansas

Research Description

Animal waste management, nutrient recovery and sustainable food production and distribution.

Honors and Awards

  • College of Engineering Outstanding Faculty Mentoring Citation, 2016
  • Inducted to Arkansas Academy of Biological and Agricultural Engineers, 2007

Publications

Pathways to sustainable transitions in a complex agricultural system: a case study of swine waste management in North Carolina
Deviney, A. V., Classen, J. J., & Bruce, J. A. (2024), FRONTIERS IN SUSTAINABLE FOOD SYSTEMS, 7. https://doi.org/10.3389/fsufs.2023.1292326
A methodology for using a multilevel perspective framework to analyze complex systems
Deviney, A. V., Classen, J. J., & Bruce, J. A. (2023), Methodological Innovations, 3, 205979912311602. https://doi.org/10.1177/20597991231160280
Impacts of utilizing swine lagoon sludge as a composting ingredient
Patil, P., Sharara, M., Shah, S., Kulesza, S., & Classen, J. (2023), Journal of Environmental Management, 327, 116840. https://doi.org/10.1016/j.jenvman.2022.116840
Phosphorus sustainability through coordinated stakeholder engagement: a perspective
Deviney, A., Grieger, K., Merck, A., Classen, J., & Marshall, A.-M. (2023), Environment Systems and Decisions, 2. https://doi.org/10.1007/s10669-023-09896-0
ADDRESSING NUTRIENT IMBALANCES IN ANIMAL AGRICULTURE SYSTEMS
Sharara, M., Kolesch, R. K., Cortus, E. L., Larson, R. A., Classen, J. J., & Janni, K. A. (2022). [Review of , ]. JOURNAL OF THE ASABE, 65(2), 235–249. https://doi.org/10.13031/ja.14661
Impacts of Air Velocity Treatments under Summer Condition: Part I—Heavy Broiler’s Surface Temperature Response
Akter, S., Cheng, B., West, D., Liu, Y., Qian, Y., Zou, X., … Wang-Li, L. (2022), Animals, 12(3), 328. https://doi.org/10.3390/ani12030328
Impacts of Air Velocity Treatments under Summer Conditions: Part II—Heavy Broiler’s Behavioral Response
Akter, S., Liu, Y., Cheng, B., Classen, J., Oviedo, E., Harris, D., & Wang-Li, L. (2022), Animals, 12(9), 1050. https://doi.org/10.3390/ani12091050
Means, motive, and opportunity
Bird, K. I. T., Nichols, V. A., Garay, E. S., Nowatzke, M., Essary, C. R., Post, K. K., … Cortus, E. L. (2022), Elementa: Science of the Anthropocene, 10(1). https://doi.org/10.1525/elementa.2021.00066
Performance of a Thermodynamic Model for Predicting Inorganic Aerosols in the Southeastern U.S.
Cheng, B., Wang-Li, L., Classen, J., & Bloomfield, P. (2022), Atmosphere, 13(12), 1977. https://doi.org/10.3390/atmos13121977
Partitioning of NH3-NH4+ in the Southeastern U.S.
Cheng, B., Wang-Li, L., Meskhidze, N., Classen, J., & Bloomfield, P. (2021), Atmosphere, 12(12), 1681. https://doi.org/10.3390/atmos12121681

View all publications via NC State Libraries

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Grants

STC: Science and Technologies for Phosphorus Sustainability (STEPS) Center
National Science Foundation (NSF)(10/01/21 - 9/30/26)
Infrastructure Improvements to Lagoons at Back Bay National Wildlife Refuge, VA
US Dept. of the Interior (DOI)(3/28/19 - 12/31/23)
Fate, Transport and Transformation of Ammonia Emissions from Animal Feeding Operations and Their Impacts on Air-Soil Health
National Science Foundation (NSF)(8/15/18 - 7/31/23)
Mitigating Environmental Stress for Enhanced Broiler Production Performance and Welfare
USDA - National Institute of Food and Agriculture (NIFA)(3/01/17 - 2/28/23)
INFEWS/T4: The INFEWS-ER: A Virtual Resource Center Enabling Graduate Innovations at the Nexus of Food, Energy, and Water Systems
National Science Foundation (NSF)(5/28/21 - 8/31/22)
Urea Recovery and Urease Inhibition from Pilot Scale Scraper System
Precision Fabricating & Cleaning Co.(3/01/17 - 5/31/22)
Ammonia Recovery from Swine Urine Liquid with Selective Membrane Technology
US Dept. of Agriculture (USDA)(9/20/12 - 8/31/16)
Ammonia Recovery from Swine Wastewater with Selective Membrane Technology (NCPC)
NC Pork Council(9/20/12 - 8/31/16)
Ammonia Recovery from Swine Wastewater with Selective Membrane Technology (M-B)
Murphy-Brown, LLC(9/20/12 - 8/31/16)
Manure Belt Collection System and Energy Recovery System
US Dept. of Agriculture (USDA)(9/22/10 - 9/30/15)