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Hema Ramsurn, PhD

Hema Ramsurn, PhD
Assistant Professor of Chemical Engineering
College of Engineering & Natural Sciences
Chemical Engineering
918-631-2978 Keplinger Hall Room 3405


PhD – Auburn University MS – Brunel University BS – University of Mauritius


Hema Ramsurn has worked with sub- and supercritical water as a liquefaction and gasification medium to depolymerize biomass to produce biofuels, biochar and syngas.  After her graduation, Dr. Ramsurn was appointed as a post-doctoral fellow at Auburn University to start an industry-funded project that involved deposition of nanoparticles on fabrics for UV protection.  She joined the Russell School of Chemical Engineering at The University of Tulsa in August, 2014. Her current research interests are biomass-derived products and gas-to-liquid conversion.

Research Interests

Supercritical Fluids
Bio-based Value-added Products and their Applications
Gas to Liquid Conversions

Teaching Interests

Fluid Mechanics
Chemical Engineering Principles
Renewable Energy
Health and Safety
Reaction Engineering


Journal Articles

  • (1)
    Ramsurn, H.; Gupta, R. Deoxy-Liquefaction of Switchgrass in Supercritical Water With Calcium Formate As an in-Situ Hydrogen Donor. 2013, 143, 575-583.
  • (1)
    Ramsurn, H.; Gupta, R. Production of Biocrude from Biomass by Acidic Subcritical Water Followed by Alkaline Supercritical Water Two-Step Liquefaction. 2012, 26, 2365-2375.
  • (1)
    Ramsurn, H.; Kumar, S.; Gupta, R. Enhancement of Biochar Gasification in Alkali Hydrothermal Medium by Passivation of Inorganic Components Using Ca(OH)2. 2011, 25, 2389-2398.
  • (1)
    Ramsurn, H.; Byrd, A.; Kumar, S.; Kong, L.; Gupta, R. Hydrogen Production from Catalytic Gasification of Switchgrass Biocrude in Supercritical Water. 2011, 36, 3426-3433.

Book Chapters

  • (1)
    Ramsurn, H.; Gupta, R. Transformation of Biomass. In Handbook of Combustion, Volume 3: Gaseous and Liquid fuels; Wiley-VCH, 2015; Vol. 3.
  • (1)
    Ramsurn, H.; Gupta, R. Hydrogenation by Nanoparticles. In New and Future Developments in Catalysis. Catalysis by Nanoparticles; Elsevier, 2013.

Invited Reviewed Articles

  • (1)
    Ramsurn, H.; Ram, G. Nanotechnology in Bio and Solar Fuels. ACS Sustainable Chemistry and Engineering Journal 2013, pp. 779-797.

Courses Taught

  • Thermodynamics
  • Independent Study
  • Introductory Fluid Mechanics
  • Research and Dissertation

Professional Affiliations

  • Amrican Institute of Chemical Engineers
  • American Society for Engineering Education
  • American Chemical Society

Awards & Honors

  • McLeod Outstanding Chemical Eng Graduate Student TA
  • Second Prize in Oral Competition
  • Third Prize in Poster Competition
  • First Prize in Poster Competition
  • Graduate Travel Award
  • Outstanding Dissertation Award
  • Outstanding Doctoral Student
  • Tau Beta Pi 2017 Teaching Excellence Award