Utilization of chicken eggshells as catalyst in biodiesel synthesis from waste cooking oil

Lizda Johar Mawarani*, Thomas Andherson Sihombing, Doty Dewi Risanti, Muhannad Illayan Massadeh, Dwi Prananto

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Solid oxides are the most used catalyst for the synthesis of biodiesel, one of which is calcium oxide (CaO). This research reports the synthesis of CaO catalysts sourced from chicken eggshells through the calcination process. Chicken eggshells were cleaned and dried for 24 h at 120 oC. The eggshells were then calcined at temperatures varying from 600 oC to 900 oC for 6 h and the resulted sample were characterized by FTIR and XRD. The biodiesel synthesis was conducted at 65 °C with a reaction time of 2 h and the concentration of catalyst was varied at 3 wt%, 6 wt%, and 9 wt%. The optimal biodiesel synthesis was obtained at a concentration of CaO catalyst formed at a calcination temperature of 900 °C at 9 wt%. The yield of biodiesel conversion was obtained at 81.43 % and glycerol was produced as a by-product.

Original languageEnglish
Article numberES-737
Pages (from-to)85-92
Number of pages8
JournalProceedings of the Pakistan Academy of Sciences: Part A
Issue numberS
Publication statusPublished - 7 Oct 2021


  • Alternate Feedstock
  • Calcination
  • Environmentally friendly catalyst
  • Reduce production cost
  • Renewable energy
  • Reuse waste material


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