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Mercimek S., ATABANI A. I.

The 1st International Conference on Alternative Fuels: Future and Challenges, Kayseri, Turkey, 2 - 04 December 2016, vol.1, pp.9

  • Publication Type: Conference Paper / Summary Text
  • Volume: 1
  • City: Kayseri
  • Country: Turkey
  • Page Numbers: pp.9
  • Erciyes University Affiliated: Yes


Biodiesel is a renewable energy source produced from vegetable oils and animal fats, which is being used as a substitute for fossil diesel. However, biodiesel production is a fairly expensive process with its feedstock comprising the major cost. Therefore, exploration for cheap alternative feedstocks is important nowadays. In this study, the utilization of waste coffee as potential new low-cost alternative feedstock for biodiesel production in Turkey was investigated. Waste coffee sample was collected from various coffee shops in Kayseri, Turkey. All samples were then dried using an electric oven for 6 hours to make sure that all samples are free from moisture content. The dried samples were then taken into a soxhlet extractor to extract waste coffee oil using n-hexane as a solvent. Waste coffee oil was then separated from n-hexane using a rotary evaporator. The recovered n-hexane was used repeatedly for subsequent extraction processes. It has been found that this process yields 12.50 %(w/w) of waste coffee oil. To evaluate the quality of the extracted oil from waste coffee, physical and chemical properties were studied, followed by biodiesel production. The quality of the produced biodiesel was tested and compared with ASTM D6751 standards and all the properties complied with standard specifications. . The fatty acid composition of the biodiesel was also analyzed by Gas chromatography and has been presented in this study. The results of this research work produce valuable insights on the production of biodiesel from waste ground in Turkey.