John Classen
Director of Graduate Programs

- 919-515-6755
- classen@ncsu.edu
- 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
- 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
- Socio-Economic and Governance Conditions Corresponding to Change in Animal Agriculture: South Dakota Case Study
- Welles, J. S., Soriano, N. C. T., Dorbu, F. E., Pereira, G. M., Rubeck, L. M., Timmermans, E. L., … Cortus, E. L. (2021), Sustainability, 13(19), 10682. https://doi.org/10.3390/su131910682
Grants
- Contributions to INFEWS-ER, a Virtual Resource Center
- National Science Foundation (NSF)(5/28/21 - 8/31/22)
- 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 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)
- Urea Recovery and Urease Inhibition from Pilot Scale Scraper System
- Precision Fabricating & Cleaning Co.(3/01/17 - 5/31/22)
- Mitigating Environmental Stress for Enhanced Broiler Production Performance and Welfare
- US Dept. of Agriculture - National Institute of Food and Agriculture (USDA NIFA)(3/01/17 - 2/28/23)
- Ammonia Recovery from Swine Wastewater with Selective Membrane Technology
- Murphy-Brown, LLC (was Murphy Farms)(9/20/12 - 8/31/16)
- Ammonia Recovery from Swine Wastewater with Selective Membrane Technology
- NC Pork Council(9/20/12 - 8/31/16)
- A Research Initiative to Develop Advanced Bio-Processing of Organic Residuals
- NCSU Research and Innovation Seed Funding Program(7/01/14 - 6/30/15)
- Ammonia Recovery from Swine Wastewater with Selective Membrane Technology
- US Dept. of Agriculture (USDA)(9/20/12 - 8/31/16)