Dr. Ajay Kumar

Department of Biosystems and Agricultural Engineering

Oklahoma State University, USA

Email: ajay.kumar@okstate.edu

Qualifications

2009 Ph.D., Agricultural and Biological Systems Engineering, University of Nebraska-Lincoln, USA

2006 M.Sc., Agricultural and Biological Systems Engineering, University of Nebraska-Lincoln (UNL), USA

Publications (Selected)

1. Ouedraogo, A. S., Kumar, A., Frazier, R., & Sallam, K. A. (2024). Comparative Life Cycle Assessment of Landfilling with Sustainable Waste Management Methods for Municipal Solid Wastes. Environments, 11(11), 248. https://doi.org/10.3390/environments11110248
2. Lamichhane, B., Dunn, B. L., Singh, H., Kumar, A., & Norwood, B. (2024). Determining Eastern Red Cedar Biochar Soilless Media Supplementation Rates for Potted Ornamental Kale and Chrysanthemum Production. HortScience, 59(6), 777-786. Retrieved Apr 2, 2025, from https://doi.org/10.21273/HORTSCI17704-24
3. Lamichhane, B., Dunn, B. L., Singh, H., Kumar, A., & Norwood, F. B. (2024). Determining Eastern Red Cedar Biochar Soilless-Media Supplementation Rates for Potted Geranium and Petunia Production. Horticulturae, 10(5), 467. https://doi.org/10.3390/horticulturae10050467
4. Ouedraogo, A. S., Kumar, A., & Wang, N. (2023). Landfill Waste Segregation Using Transfer and Ensemble Machine Learning: A Convolutional Neural Network Approach. Energies, 16(16), 5980. https://doi.org/10.3390/en16165980
5. Indrawan, Natarianto & Plotnikov, Viacheslav & Thapa, Sunil & Diaz, Gerardo & Ajay, Kumar & Huhnke, R.. (2023). Preliminary evaluation of surface dielectric barrier discharge non-thermal plasma for reforming syngas derived from a downdraft gasifier. Fuel. 332. 126186. 10.1016/j.fuel.2022.126186. 
6. Ouedraogo, A. S., Frazier, R. S., & Kumar, A. (2021). Comparative Life Cycle Assessment of Gasification and Landfilling for Disposal of Municipal Solid Wastes. Energies, 14(21), 7032. https://doi.org/10.3390/en14217032
7. James R., A. M., Yuan, W., Wang, D., Wang, D., & Kumar, A. (2020). The Effect of Gasification Conditions on the Surface Properties of Biochar Produced in a Top-Lit Updraft Gasifier. Applied Sciences, 10(2), 688. https://doi.org/10.3390/app10020688
8. Indrawan, N., Simkins, B., Kumar, A., & Huhnke, R. L. (2020). Economics of Distributed Power Generation via Gasification of Biomass and Municipal Solid Waste. Energies, 13(14), 3703. https://doi.org/10.3390/en13143703
9. Indrawan, Natarianto & Mohammad, Sayeed & Ajay, Kumar & Huhnke, R.. (2019). Modeling low temperature plasma gasification of municipal solid waste. Environmental Technology & Innovation. 15. 100412. 10.1016/j.eti.2019.100412. 
10. Thapa, Sunil & Indrawan, Natarianto & Bhoi, Prakash & Ajay, Kumar & Huhnke, R.. (2019). Tar reduction in biomass syngas using heat exchanger and vegetable oil bubbler. Energy. 175. 10.1016/j.energy.2019.03.045. 
11. Bhoi, Prakash & Huhnke, R. & Ajay, Kumar & Indrawan, Natarianto & Thapa, Sunil. (2018). Co-gasification of Municipal Solid Waste and Biomass in a Commercial Scale Downdraft Gasifier. Energy. 163. 10.1016/j.energy.2018.08.151. 
12. Indrawan, Natarianto & Thapa, Sunil & Bhoi, Prakash & Huhnke, R. & Ajay, Kumar. (2018). Electricity power generation from Co-gasification of municipal solid wastes and biomass: Generation and emission performance. Energy. 162. 10.1016/j.energy.2018.07.169. 
13. Sun, Xiao & Atiyeh, Hasan & Zhang, Hailin & Ajay, Kumar & Tanner, Ralph. (2018). Biochar Enhanced Ethanol and Butanol Production by Clostridium carboxidivorans from Syngas. Bioresource Technology. 265. 10.1016/j.biortech.2018.05.106. 
14. Sun, Xiao & Atiyeh, Hasan & Ajay, Kumar & Zhang, Hailin & Tanner, Ralph. (2018). Enhanced Alcohol Production from Synthesis Gas Using Biochar. 
15. Kumar, Ajay, Natarianto Indrawan, Sunil Thapa, Prakash Bhoi, Raymond L. Huhnke. 2018. "Mobile-Scale Power Generation from MSW and Switchgrass: Gasification, Engine Power Generation and Engine Emissions Performance." Department of Mechanical Engineering Faculty Presentations. Presentation 5. source: http://bsen.auburn.edu/tcs/wp-content/uploads/sites/279/2018/10/TCS-Agenda-V11-20180924.pdf
16. Indrawan, Natarianto, Ajay Kumar, Prakash Bhoi, Raymond L. Huhnke. 2018. "Power Generation from Co- Gasification of Municipal Solid Wastes and Biomass: Engine Power and Emission Performance." Department of Mechanical Engineering Faculty Presentations. Presentation 4. https://digitalcommons.georgiasouthern.edu/mech-eng-facpres/4
17. Indrawan, N., Kumar, A., Kumar, S. (2018). Recent Advances in Power Generation Through Biomass and Municipal Solid Waste Gasification. In: De, S., Agarwal, A., Moholkar, V., Thallada, B. (eds) Coal and Biomass Gasification. Energy, Environment, and Sustainability. Springer, Singapore. https://doi.org/10.1007/978-981-10-7335-9_15
18. Qian, Kezhen & Ajay, Kumar. (2017). Catalytic reforming of toluene and naphthalene (model tar) by char supported nickel catalyst. Fuel. 187. 128-136. 10.1016/j.fuel.2016.09.043. 
19. Yang, Zixu & Ajay, Kumar & Apblett, Allen & Moneeb, Ahmed. (2016). Co-Pyrolysis of Torrefied Biomass and Methane over Molybdenum Modified Bimetallic HZSM-5 Catalyst for Hydrocarbons Production. Green Chemistry. 19. 10.1039/C6GC02497A. 
20. Ramachandriya, Karthikeyan & Kundiyana, Dimple & Sharma, Ashokkumar & Ajay, Kumar & Atiyeh, Hasan & Huhnke, R. & Wilkins, Mark. (2016). Critical factors affecting the integration of biomass gasification and syngas fermentation technology. AIMS Bioengineering. 3. 188-210. 10.3934/bioeng.2016.2.188. 

Profile Details

https://experts.okstate.edu/ajay.kumar