A general kinetic model for the hydrothermal liquefaction of microalgae

Peter J. Valdez, Vincent J. Tocco, Phillip E. Savage

Research output: Contribution to journalArticlepeer-review

152 Citations (SciVal)


We developed a general kinetic model for hydrothermal liquefaction (HTL) of microalgae. The model, which allows the protein, lipid, and carbohydrate fractions of the cell to react at different rates, successfully correlated experimental data for the hydrothermal liquefaction of Chlorella protothecoides, Scenedesmus sp., and Nannochloropsis sp. The model can faithfully account for the influence of time and temperature on the gravimetric yields of gas, solid, biocrude, and aqueous-phase products from isothermal HTL of a 15. wt% slurry. Examination of the rate constants shows that lipids and proteins are the major contributors to the biocrude, while other algal cell constituents contribute very little to the biocrude.

Original languageEnglish (US)
Pages (from-to)123-127
Number of pages5
JournalBioresource technology
StatePublished - Jul 2014

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Environmental Engineering
  • Renewable Energy, Sustainability and the Environment
  • Waste Management and Disposal


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