John Classen

Deviney, A. V., Classen, J. J., & Bruce, J. A. (2024). Pathways to sustainable transitions in a complex agricultural system: a case study of swine waste management in North Carolina. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS, 7. https://doi.org/10.3389/fsufs.2023.1292326

Deviney, A. V., Classen, J. J., & Bruce, J. A. (2023). A methodology for using a multilevel perspective framework to analyze complex systems. Methodological Innovations, 3, 205979912311602. https://doi.org/10.1177/20597991231160280

Patil, P., Sharara, M., Shah, S., Kulesza, S., & Classen, J. (2023). Impacts of utilizing swine lagoon sludge as a composting ingredient. Journal of Environmental Management, 327, 116840. https://doi.org/10.1016/j.jenvman.2022.116840

Deviney, A., Grieger, K., Merck, A., Classen, J., & Marshall, A.-M. (2023). Phosphorus sustainability through coordinated stakeholder engagement: a perspective. Environment Systems and Decisions, 2. https://doi.org/10.1007/s10669-023-09896-0

Sharara, M., Kolesch, R. K., Cortus, E. L., Larson, R. A., Classen, J. J., & Janni, K. A. (2022). [Review of ADDRESSING NUTRIENT IMBALANCES IN ANIMAL AGRICULTURE SYSTEMS]. JOURNAL OF THE ASABE, 65(2), 235–249. https://doi.org/10.13031/ja.14661

Akter, S., Cheng, B., West, D., Liu, Y., Qian, Y., Zou, X., … Wang-Li, L. (2022). Impacts of Air Velocity Treatments under Summer Condition: Part I—Heavy Broiler’s Surface Temperature Response. Animals, 12(3), 328. https://doi.org/10.3390/ani12030328

Akter, S., Liu, Y., Cheng, B., Classen, J., Oviedo, E., Harris, D., & Wang-Li, L. (2022). Impacts of Air Velocity Treatments under Summer Conditions: Part II—Heavy Broiler’s Behavioral Response. Animals, 12(9), 1050. https://doi.org/10.3390/ani12091050

Bird, K. I. T., Nichols, V. A., Garay, E. S., Nowatzke, M., Essary, C. R., Post, K. K., … Cortus, E. L. (2022). Means, motive, and opportunity. Elementa: Science of the Anthropocene, 10(1). https://doi.org/10.1525/elementa.2021.00066

Cheng, B., Wang-Li, L., Classen, J., & Bloomfield, P. (2022). Performance of a Thermodynamic Model for Predicting Inorganic Aerosols in the Southeastern U.S. Atmosphere, 13(12), 1977. https://doi.org/10.3390/atmos13121977

Cheng, B., Wang-Li, L., Meskhidze, N., Classen, J., & Bloomfield, P. (2021). Partitioning of NH3-NH4+ in the Southeastern U.S. Atmosphere, 12(12), 1681. https://doi.org/10.3390/atmos12121681

Welles, J. S., Soriano, N. C. T., Dorbu, F. E., Pereira, G. M., Rubeck, L. M., Timmermans, E. L., … Cortus, E. L. (2021). Socio-Economic and Governance Conditions Corresponding to Change in Animal Agriculture: South Dakota Case Study. Sustainability, 13(19), 10682. https://doi.org/10.3390/su131910682

Cheng, B., Wang-Li, L., Classen, J., Meskhidze, N., & Bloomfield, P. (2021). Spatial and temporal variations of atmospheric chemical condition in the Southeastern U.S. Atmospheric Research, 248, 105190. https://doi.org/10.1016/j.atmosres.2020.105190

Deviney, A., Classen, J., Bruce, J., & Sharara, M. (2020). Sustainable Swine Manure Management: A Tale of Two Agreements. Sustainability, 13(1), 15. https://doi.org/10.3390/su13010015

Hess, B. J., Kolar, P., Classen, J. J., Knappe, D., & Cheng, J. J. (2019). Effects of Co-occurring Species Present in Swine Lagoons on Adsorption of Copper on Eggshell. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH, 13(4), 613–622. https://doi.org/10.1007/s41742-019-00203-x

Kolar, P., Classen, J., & Hall, S. G. (2019). Physicochemical data of p-cresol, butyric acid, and ammonia. Data in Brief, 26, 104356. https://doi.org/10.1016/j.dib.2019.104356

Cheng, B., Wang-Li, L., Meskhidze, N., Classen, J., & Bloomfield, P. (2019). Spatial and temporal variations of PM2.5 mass closure and inorganic PM2.5 in the Southeastern U.S. Environmental Science and Pollution Research, 26(32), 33181–33191. https://doi.org/10.1007/s11356-019-06437-8

Rodríguez, L. F., Marshall, A.-M., Cotton, D., Koelsch, R., Koziel, J., Meyer, D., … Saundry, P. D. (2019). The Development of the INFEWS-ER: A Virtual Resource Center for Transdisciplinary Graduate Student Training at the Nexus of Food, Energy, and Water. Frontiers in Environmental Science, 7. https://doi.org/10.3389/fenvs.2019.00038

Lentz, Z., Kolar, P., & Classen, J. J. (2019). Valorization of Swine Manure into Hydrochars. Processes, 7(9), 560. https://doi.org/10.3390/pr7090560

Hess, B. J., Kolar, P., Classen, J. J., Knappe, D., & Cheng, J. J. (2018). Evaluation of Waste Eggshells for Adsorption of Copper from Synthetic and Swine Wastewater. Transactions of the ASABE, 61(3), 967–976. https://doi.org/10.13031/trans.12599

L. Kick, E., Zering, K., & Classen, J. (2017). Approaches to agricultural innovation and their effectiveness. AIMS Agriculture and Food, 2(4), 370–373. https://doi.org/10.3934/agrfood.2017.4.370

Das, L., Kolar, P., Sharma-Shivappa, R., Classen, J. J., & Osborne, J. A. (2017). Catalytic Valorization of Lignin Using Niobium Oxide. WASTE AND BIOMASS VALORIZATION, 8(8), 2673–2680. https://doi.org/10.1007/s12649-016-9717-8

Das, L., Kolar, P., Sharma-Shivappa, R., Classen, J., & Osborne, J. (2017). Oxidative Depolymerization of Lignin Using Supported Niobium Catalysts. ChemEngineering, 1(2), 17. https://doi.org/10.3390/chemengineering1020017

Lentz, Z., Classen, J., & Kolar, P. (2017). THERMOCHEMICAL CONVERSION: A PROSPECTIVE SWINE MANURE SOLUTION FOR NORTH CAROLINA. TRANSACTIONS OF THE ASABE, 60(3), 591–600. https://doi.org/10.13031/trans.12074

Lu, H., Yuan, W., Cheng, J., Rose, R. B., Classen, J. J., & Simmons, O. D. (2016). Modeling the Growth of Archaeon Halobacterium halobium Affected by Temperature and Light. Applied Biochemistry and Biotechnology, 181(3), 1080–1095. https://doi.org/10.1007/s12010-016-2270-x

Selective Oxidation of Lignin into Aromatic Aldehydes Using Niobium Oxalate. (2016). Transactions of the ASABE, 59(2), 727–735. https://doi.org/10.13031/trans.59.10908

Hu, D., Wang-Li, L., Simmons, O. D., Classen, J. J., & Osborne, J. A. (2016). Size Distributions of Bioaerosols in an Egg Production Facility and Its Vicinity. ENVIRONMENTAL ENGINEERING SCIENCE, 33(4), 215–223. https://doi.org/10.1089/ees.2015.0220

Kick, E., Balcazar Tellez, M., Thompson, G., & Classen, J. (2016). World geography and power, national capitals, and inequality as cross-national causes of food security and environmental outcomes. AIMS Agriculture and Food, 1(4), 419–438. https://doi.org/10.3934/agrfood.2016.4.419

Hu, D., Wang-Li, L., Simmons III, O. D., Classen, J. J., & Osborne, J. A. (2015). Spatiotemporal Variations of Bioaerosols  in the Vicinity of an Animal Feeding  Operation Facility in the US. Journal of Environmental Protection, 06(06), 614–627. https://doi.org/10.4236/jep.2015.66056

Fitzgerald, S., Kolar, P., Classen, J., Boyette, M., & Das, L. (2015). Swine Manure Char as an Adsorbent for Mitigation of p-Cresol. ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY, 34(1), 125–131. https://doi.org/10.1002/ep.11972

Hu, D., Wang-Li, L., Simmons, O. D., Classen, J. J., Osborne, J. A., & Byfield, G. E. (2014). Bioaerosol concentrations and emissions from tunnel-ventilated high-rise layer houses in North Carolina. Transactions of the ASABE, 57(3), 915–925.

Liang, W., Shah, S. B., Classen, J., & Sharma-Shivappa, R. (2014). Drying temperature - duration impacts on moisture, carbon, and nitrogen losses from broiler litter. Agricultural Engineering International: CIGR Journal, 16(4), 16–23.

Classen, J. J., Chandler, W. J., Huie, R. S., & Osborne, J. A. (2013). A centrifuge-based procedure for suspended solids measurements in lagoon sludge. Transactions of the ASABE, 56(2), 747–752.

Das, L., Kolar, P., Classen, J. J., & Osborne, J. A. (2013). Adsorbents from pine wood via K2CO3-assisted low temperature carbonization for adsorption of p-cresol. INDUSTRIAL CROPS AND PRODUCTS, 45, 215–222. https://doi.org/10.1016/j.indcrop.2012.12.010

Liang, W.-zhen, Classen, J. J., Shah, S. B., & Sharma-Shivappa, R. (2013). Ammonia Fate and Transport Mechanisms in Broiler Litter. Water, Air, & Soil Pollution, 225(1). https://doi.org/10.1007/s11270-013-1812-x

Liang, W.-zhen, Shah, S. B., Classen, J. J., & Sharma-Shivappa, R. (2013). Modeling Ammonium Adsorption on Broiler Litter and Cake. WATER AIR AND SOIL POLLUTION, 224(2). https://doi.org/10.1007/s11270-012-1405-0

Das, L., Kolar, P., Osborne, J. A., & Classen, J. J. (2012). Adsorption of p-cresol on granular activated carbon. Agricultural Engineering Institute: CIGR Journal, 14(4), 37–49.

Classen, J. J., & Lal, H. (2012). Agricultural Waste Management Systems and Software Tools. In uis F. Marmolejo Rebellon (Ed.), Waste Management - An Integrated Vision. https://doi.org/10.5772/50484

Love, C. D., Kolar, P., Classen, J., & Das, L. (2011). Adsorption of ammonia on ozonated activated carbon. Transactions of the ASABE, 54(5), 1931–1940. https://doi.org/10.13031/2013.39834

Classen, J., Rice, J. M., McNeill, J. P., & Simmons, O. D. (2011). Design and evaluation of a discreet sampler for waste treatment lagoons. Applied Engineering in Agriculture, 27(6), 1007–1014. https://doi.org/10.13031/2013.40621

Guerdat, T. C., Losordo, T. M., Classen, J. J., Osborne, J. A., & DeLong, D. (2011). Evaluating the effects of organic carbon on biological filtration performance in a large scale recirculating aquaculture system. AQUACULTURAL ENGINEERING, 44(1), 10–18. https://doi.org/10.1016/j.aquaeng.2010.10.002

Guerdat, T. C., Losordo, T. M., Classen, J. J., Osborne, J. A., & DeLong, D. P. (2010). An evaluation of commercially available biological filters for recirculating aquaculture systems. AQUACULTURAL ENGINEERING, 42(1), 38–49. https://doi.org/10.1016/j.aquaeng.2009.10.002

Classen, J., Rice, J. M., & Sherman, R. (2007). The effects of vermicompost on field turnips and rainfall runoff. Compost Science & Utilization, 15(1), 34–39. https://doi.org/10.1080/1065657x.2007.10702308

Chaiprapat, S., Cheng, J. J., Classen, J. J., & Liehr, S. K. (2005). Role of internal nutrient storage in duckweed growth for swine wastewater treatment. Transactions of the ASAE, 48(6), 2247–2258. https://doi.org/10.13031/2013.20088

Chaiprapat, S., Cheng, J., Classen, J. J., Ducoste, J. J., & Liehr, S. K. (2003). Modeling Nitrogen Transport in Duckweed Pond for Secondary Treatment of Swine Wastewater. Journal of Environmental Engineering, 129(8), 731–739. https://doi.org/10.1061/(asce)0733-9372(2003)129:8(731)

Cheng, J. Y., Bergmann, B. A., Classen, J. J., Stomp, A. M., & Howard, J. W. (2002). Nutrient recovery from swine lagoon water by Spirodela punctata. BIORESOURCE TECHNOLOGY, 81(1), 81–85. https://doi.org/10.1016/S0960-8524(01)00098-0

Cheng, J., Landesman, L., Bergmann, B., Classen, J., Howard, J. W., & Yamamoto, Y. T. (2002). Nutrient removal from swine lagoon liquid by Lemna minor 8627. Transactions of the ASAE, 45(4), 1003–1010. https://doi.org/10.13031/2013.9953

Chaiprapat, S., Cheng, J., Classen, J. J., & Liehr, S. K. (2002). Role of internal nutrient storage in duckweed for secondary swine wastewater treatment. Paper, 2002 ASAE annual international meeting/CIGR XVth world congress : Hyatt Regency Chicago, Chicago, Illinois, USA, July 28 - July 31, 2002, 2, 4130.

Price, M. S., Classen, J. J., & Payne, G. A. (2001). Aspergillus niger absorbs copper and zinc from swine wastewater. BIORESOURCE TECHNOLOGY, 77(1), 41–49. https://doi.org/10.1016/S0960-8524(00)00135-8

Smith, R. A., Cheng, J., & Classen, J. (2001). Duckweed harvesting and mat control. ASAE 94th annual international meeting : 2001, an engineering odyssey : July 29-August 1, 2001, Sacramento, California, 1, 2277. https://doi.org/10.13031/2013.4128

Chaiprapat, S., Cheng, J., Classen, J. J., & Liehr, S. K. (2001). Modeling nitrogen transfer in duckweed covered pond for secondary treatment of swine wastewater. Proceedings of the International Symposium Addressing Animal Production and Environmental Issues.

Classen, J. J., Engler, C. R., Kenerley, C. M., & Whittaker, A. D. (2000). A logistic model of subsurface fungal growth with application to bioremediation. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING, 35(4), 465–488. https://doi.org/10.1080/10934520009376982

Classen, J., Young, J. S., Bottcher, R. W., & Westerman, P. W. (2000). Design and analysis of a pilot scale biofiltration system for odorous air. Transactions of the ASAE, 43(1), 111–117. https://doi.org/10.13031/2013.2675

Bergmann, B. A., Cheng, J., Classen, J., & Stomp, A. M. (2000). In vitro selection of duckweed geographical isolates for potential use in swine lagoon effluent renovation. BIORESOURCE TECHNOLOGY, 73(1), 13–20. https://doi.org/10.1016/S0960-8524(99)00137-6

Classen, J. J., Cheng, J., Bergmann, B. A., & Stomp, A. M. (2000). Lemna gibba growth and nutrient uptake in response to different nutrient levels. Animal, agricultural, and food processing wastes : proceedings of the Eighth International Symposium, October 9-11, 2000, Des Moines, Iowa.

Jones, M. L., Liehr, S. K., Classen, J., & Robarge, W. (2000). Mechanisms of dinitrogen gas formation in anaerobic lagoons. Advances in Environmental Research, 4(2), 133–139. https://doi.org/10.1016/s1093-0191(00)00016-2

Cheng, J., Stomp, A.-M., Classen, J., Barker, J. C., & Bergmann, B. (2000). Nutrient removal from swine lagoon effluent by duckweed. Transactions of the ASAE, 43(2), 263–269. https://doi.org/10.13031/2013.2701

Cheng, J., Bergmann, B. A., Classen, J. J., Stomp, A. M., & Howard, J. W. (2000). Nutrient removal from swine wastewater by duckweed - Spirodela punctata. Industrial wastewater and envrironmental contaminants : proceedings of the 1st World Water Congress of the International Water Association, held in Paris, France, 3-7 July 2000, 1.

Bicudo, J. R., Classen, J. J., Goldsmith, C. D., & Smith, T. (1999). Effects of aeration cycles and hydraulic retention time on the sequencing batch treatment of flushed swine manure. Advances in Environmental Research, 3(1), U5–73.

Classen, J., Liu, W.-S., Kenerley, C. M., & Whittaker, A. D. (1996). Fractal analysis of subsurface growth of a genetically modified strain of Gliocladium virens and its parental strain. Transactions of the ASAE, 39(6), 2271. https://doi.org/10.13031/2013.27736

Classen, J. J., Siebenmorgen, T. J., & Griffis, C. L. (1993). Vegetable processing energy requirements. Arkansas Farm Research, 42(2), 8–9.

Classen, J., Siebenmorgen, T. J., Griffis, C. L., & Young, J. C. (1992). Technical Notes: Processing Energy Requirements for Several Vegetables. Transactions of the ASAE, 35(3), 973–974. https://doi.org/10.13031/2013.28689

Classen, J., Siebenmorgen, T. J., Griffis, C. L., & Young, J. C. (1991). ANAEROBIC DIGESTION OF HOMINY WASTE. Transactions of the ASAE, 34(3), 0937–0943. https://doi.org/10.13031/2013.31752