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Oklahoma State University

AJ Johannes

Professor Emeritus



Ph.D., Chemical Engineering, University of Kentucky, 1977

M. S.,  Civil Engineering, West Virginia University, 1974

B. S.,  Chemistry and Physics, Illinois State University, 1970



Mathematical Modeling and CFD

Ambient Temperature Extraction

Modeling Transmix in Pipelines

Modeling Ethanol Production from Biomass

Combustion Using Low Temperature Plasma



Dr. AJ's area of research is mathematical modeling. Although most of his work involves modeling in environmental engineering, he also does research in combustion, reactor design, CFD and low temperature plasmas. His current research projects include CFD modeling of transmix in pipelines, production of ethanol from switch grass and low temperature extraction of oils from biomass using liquid propane.



Maddox R. N., M. Moshfeghian, J.D. Idol, and A. H. Johannes, Chapter 16, “Natural Gas.” Riegel’s Handbook of Industrial Chemistry 10th Edition, 545-569, 2006.


Moshfeghian, M., R. N. Maddox, and A. H. Johannes.  “Application of Exponential Decay Distribution of C6+  Cut for Lean Natural Gas Phase Envelope.”  Journal of Chemical Engineering of Japan,  Vol. 39, No. 4, p. 375-382, 2006.


Moshfeghian, M., A. H. Johannes, and R. N. Maddox.  “A Consistent C6+  Distribution for Generation of Natural Gas Phase Envelope.” Proceedings of the 16th International Congress of Chemical and Process Engineering, CHISA, Praha, Czech Republic, 2004.


Holland, G. D., J. Veenstra, A. H. Johannes, G.L. Foutch, and F. Hall. “Reduction of VOC Emissions from Paint-Booth Operations Using Dielectric Barrier Discharge.”  Proceedings of the 30th Environmental and Energy Symposium & Exhibition, San Diego, CA, 2004.


Mosfeghian, M., A. H. Johannes, and R. N. Maddox. “Simple Predictive

Procedure Calculates Heptane K-value.” Oil&GasJournal, Vol.101.14, pp.62-65, April 7, 2003.


Moshfeghian, M.,  A. H. Johannes, and R. N. Maddox.“Thermodynamic

Properties Are Important In Predicting Pipeline Operations Accurate-

ly,” Oil & Gas Journal, Vol. 100.5, p. 56-62, Feb. 4, 2002.


Browning, C. B., B. J. Barfield, D. D. Bellmer, T. J. Bowser, F. M. Epplin, R. L. Huhnke, A. H. Johannes, R. S. Lewis, and C. M. Taliaferro.  “Pilot system:  Biogas to Ethanol  and Feedstock Analysis.”  Project Commpletion Report, DOE Western Regional Biomass Energy Program, Lincoln, NE, December, 2000.


Nasrifar, K., M. Moshfeghian, A. H. Johannes, and R. N. Maddox.  “Predict Gas Hydrate-Forming Temperatures—An Accurate Model is Extended to Include Gases in the Presence of Glycerol and Triethylene Glycol Solutions.”  Hydrocarbon Processing,  Vol. 78, No. 4, p. 77-80, April , 1999.