Biodiesel pp 101-125 | Cite as

Applications of Biodiesel By-products

  • Hajar Rastegari
  • Hossein Jazini
  • Hassan S. GhaziaskarEmail author
  • Mohammad Yalpani
Part of the Biofuel and Biorefinery Technologies book series (BBT, volume 8)


This chapter reviews the applications of biodiesel by-products. The biodiesel production process is predominantly carried out through transesterification of triglycerides with methanol. Besides the desirable methyl esters, this process provides other products including oil cake/meal, crude glycerol, methanol, and biodiesel wash-water. Oil cake/meal are solid residues obtained after oil extraction from the seeds. The by-product of the transesterification step is crude glycerol. To remove the impurities, crude methyl esters will be washed out which result in the biodiesel wash-water that is another potential by-product. Many applications are known for the aforementioned by-products and also the unreacted methanol. This chapter starts with a brief introduction on biodiesel process. It will continue with reviewing applications of biodiesel process’s by-products and unreacted methanol.


Biodiesel by-products Oil cake Glycerol Methanol Biodiesel wash-water 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Hajar Rastegari
    • 1
  • Hossein Jazini
    • 1
  • Hassan S. Ghaziaskar
    • 1
    Email author
  • Mohammad Yalpani
    • 2
  1. 1.Department of ChemistryIsfahan University of TechnologyIsfahanIran
  2. 2.R&D DepartmentFarzin Chemicals Sepahan Co.IsfahanIran

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