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Biodiesel production using a membrane reactor.

M A Dubé1, A Y Tremblay, J Liu

  • 1Department of Chemical Engineering, University of Ottawa, Ottawa, Ont., Canada K1N 6N5. Marc.Dube@uottawa.ca

Bioresource Technology
|April 4, 2006
PubMed
Summary
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A novel two-phase membrane reactor efficiently produces high-purity fatty acid methyl esters (FAME) from canola oil and methanol. This reactor overcomes mass-transfer limitations, enhancing biodiesel production yield and purity.

Area of Science:

  • Chemical Engineering
  • Renewable Energy
  • Catalysis

Background:

  • Canola oil transesterification to fatty acid methyl esters (FAME) faces mass-transfer challenges due to oil-methanol immiscibility.
  • Biodiesel production requires efficient separation of products from unreacted feedstocks.

Purpose of the Study:

  • To develop and evaluate a two-phase membrane reactor for enhanced biodiesel production from canola oil.
  • To overcome mass-transfer limitations in the transesterification process.
  • To achieve high purity biodiesel through in-situ product separation.

Main Methods:

  • A two-phase membrane reactor was designed and operated in semi-batch mode.
  • Transesterification reactions were conducted using both acid and base catalysis.

Related Experiment Videos

  • Experiments were performed at varying temperatures (60-70°C), catalyst concentrations, and methanol/oil feed flow rates.

    • Main Results:

    • Increased temperature, catalyst concentration, and feed flow rate significantly boosted oil conversion.
    • The membrane reactor effectively separated FAME and glycerol from unreacted canola oil.
    • High purity biodiesel was obtained, with the reaction equilibrium shifted towards product formation.

    Conclusions:

    • The developed two-phase membrane reactor is a viable technology for efficient biodiesel production.
    • This reactor design successfully addresses the immiscibility issue, improving conversion and product purity.
    • The membrane reactor offers a promising approach for shifting reaction equilibrium and enhancing biodiesel yield.