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Biodiesel Production. Transesterification of natural oils yields lower molecular weight esters of appropriate viscosity for fuel applications. Triglyceride transesterification with methanol can be acid or base catalyzed.

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biodiesel production
Biodiesel Production
  • Transesterification of natural oils yields lower molecular weight esters of appropriate viscosity for fuel applications.
    • Triglyceride transesterification with methanol can be acid or base catalyzed.
    • Free fatty acids within some feedstocks can only be esterified under acidic conditions.
      • Carboxylate salts create foaming problems, and adversely affect product viscosities
biodiesel production1
Biodiesel Production
  • The Biox plant in Hamilton, Ontario has a nameplate capacity of 67 million litres per year for converting a wide range of feedstocks into clear, acid-free biodiesel.
biodiesel production2
Biodiesel Production
  • Patented U of T process uses THF to yield a miscible, homogeneous catalytic process.
  • FFA’s in the feedstock are esterified under acidic conditions, then the whole mixture is transesterified under more efficient base catalysis.
  • Equilibrium is driven by excess methanol, and the phase-separation of glycerol from the reaction mixture
acid catalyzed fatty acid esterification design exercise 1
Acid-catalyzed fatty acid esterification: Design Exercise 1
  • Derive rate equations from this mechanism that express the rate of reagent consumption and product(s) formation as a function of measurable process variables.
    • Include expressions for the instantaneous concentration of intermediates as a function of measurable process variables.
acid catalyzed fatty acid esterification design exercise 11
Acid-catalyzed fatty acid esterification: Design Exercise 1
  • Derive rate equations from this mechanism that express the rate of reagent consumption and product(s) formation as a function of measurable process variables.
    • Include expressions for the instantaneous concentration of intermediates as a function of measurable process variables.