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Bioprocess Engineering Aspects of Biodiesel and Bioethanol Production from Microalgae

  • Ronald Halim
  • Razif Harun
  • Paul A. Webley
  • Michael K. Danquah
Chapter

Abstract

Rapid increase of atmospheric carbon dioxide together with depleted supplies of fossil fuel has led to an increased commercial interest in renewable fuels. Due to their high biomass productivity, rapid lipid accumulation and high carbohydrate storage capacity, microalgae are viewed as promising feedstocks for carbon-neutral biofuels. This chapter discusses process engineering steps for the production of biodiesel and bioethanol from microalgal biomass (harvesting, dewatering, pre-treatment, lipid extraction, lipid transmethylation, anaerobic fermentation). The suitability of microalgal lipid compositions for biodiesel conversion and the feasibility of using microalgae as raw materials for bioethanol production will also be evaluated. Specific to biodiesel production, the chapter provides an updated discussion on two of the most commonly used technologies for microalgal lipid extraction (organic solvent extraction and supercritical fluid extraction) and evaluates the effects of biomass pre-treatment on lipid extraction kinetics.

Keywords

Polar Lipid Neutral Lipid Lipid Extraction Supercritical Fluid Extraction Microalgal Biomass 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

This work was supported by an Australian Research Council (ARC) Linkage grant between Bio-Fuel Pty Ltd (Victoria, Australia) and Monash University Department of Chemical Engineering (Victoria, Australia).

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Ronald Halim
    • 1
  • Razif Harun
    • 1
  • Paul A. Webley
    • 1
  • Michael K. Danquah
    • 1
  1. 1.Bio Engineering Laboratory (BEL), Department of Chemical EngineeringMonash UniversityVictoriaAustralia

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