John Classen

Associate Professor

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


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


Effects of Co-occurring Species Present in Swine Lagoons on Adsorption of Copper on Eggshell
Hess, B. J., Kolar, P., Classen, J. J., Knappe, D., & Cheng, J. J. (2019), INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH, 13(4), 613–622.
Physicochemical data of p-cresol, butyric acid, and ammonia
Kolar, P., Classen, J., & Hall, S. G. (2019, October), DATA IN BRIEF, Vol. 26.
The Development of the INFEWS-ER: A Virtual Resource Center for Transdisciplinary Graduate Student Training at the Nexus of Food, Energy, and Water
Rodriguez, L. F., Marshall, A.-M., Cotton, D., Koelsch, R., Koziel, J., Meyer, D., … Saundry, P. D. (2019), FRONTIERS IN ENVIRONMENTAL SCIENCE, 7.
Valorization of Swine Manure into Hydrochars
Lentz, Z., Kolar, P., & Classen, J. J. (2019), PROCESSES, 7(9).
Evaluation of waste eggshells for adsorption of copper from synthetic and swine wastewater
Hess, B. J., Kolar, P., Classen, J., Knappe, D., & Cheng, J. J. (2018), Transactions of the ASABE, 61(3), 967–976.
Approaches to agricultural innovation and their effectiveness
Kick, E. L., Zering, K., & Classen, J. (2017), Aims Agriculture and Food, 2(4), 370–373.
Catalytic valorization of lignin using niobium oxide
Das, L., Kolar, P., Sharma-Shivappa, R., Classen, J., & Osborne, J. A. (2017), Waste and Biomass Valorization, 8(8), 2673–2680.
Modeling the growth of archaeon halobacterium halobium affected by temperature and light
Lu, H., Yuan, W., Cheng, J., Rose, R., Classen, J., & Simmons, O. D. (2017), Applied Biochemistry and Biotechnology, 181(3), 1080–1095.
Thermochemical conversion: A prospective swine manure solution for North Carolina
Lentz, Z., Classen, J., & Kolar, P. (2017), Transactions of the ASABE, 60(3), 591–600.
Size distributions of bioaerosols in an egg production facility and its vicinity
Hu, D., Wang-Li, L. J., Simmons, O. D., Classen, J., & Osborne, J. A. (2016), Environmental Engineering Science, 33(4), 215–223.

View all publications via NC State Libraries

View publications on Google Scholar