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Oil removal from waste coffee grounds using two-phase solvent extraction enhanced with ultrasonication

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  • Abdullah, Mudafer
  • Bulent Koc, A.

Abstract

The objective of this study was to investigate the kinetics of ultrasound assisted-two phase oil extraction from waste coffee grounds with high moisture content. Waste coffee grounds is the wet residue which contains approximately 13% (db) oil. Ultrasound-assisted two-phase oil extraction method successfully extracted 98% of the available oil from the waste coffee grounds in 30 min. Ultrasonication reduced the amount of hexane used for the extraction. Fatty acid methyl ester compositions of the waste coffee oil and the soybean oil were similar. The kinetics of oil extraction from waste coffee grounds were modeled using a two-exponential mathematical equation. Establishing oil extraction facilities at locations where the ready-to-drink coffee products are produced and using two-phase oil extraction eliminate major challenges of collection, transportation and drying, which makes waste coffee grounds a viable feedstock for biodiesel production.

Suggested Citation

  • Abdullah, Mudafer & Bulent Koc, A., 2013. "Oil removal from waste coffee grounds using two-phase solvent extraction enhanced with ultrasonication," Renewable Energy, Elsevier, vol. 50(C), pages 965-970.
    • Handle: RePEc:eee:renene:v:50:y:2013:i:c:p:965-970
    DOI: 10.1016/j.renene.2012.08.073
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    1. Zanette, Andréia F. & Barella, Rodrigo A. & Pergher, Sibele B.C. & Treichel, Helen & Oliveira, Débora & Mazutti, Marcio A. & Silva, Edson A. & Oliveira, J. Vladimir, 2011. "Screening, optimization and kinetics of Jatropha curcas oil transesterification with heterogeneous catalysts," Renewable Energy, Elsevier, vol. 36(2), pages 726-731.
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    Cited by:

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    2. Afolabi, Oluwasola O.D. & Sohail, M. & Cheng, Yu-Ling, 2020. "Optimisation and characterisation of hydrochar production from spent coffee grounds by hydrothermal carbonisation," Renewable Energy, Elsevier, vol. 147(P1), pages 1380-1391.
    3. Muhammad, Gul & Alam, Md Asraful & Mofijur, M. & Jahirul, M.I. & Lv, Yongkun & Xiong, Wenlong & Ong, Hwai Chyuan & Xu, Jingliang, 2021. "Modern developmental aspects in the field of economical harvesting and biodiesel production from microalgae biomass," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    4. Zhu, Qing-li & Shao, Rong & Dong, Rui & Yun, Zhi, 2014. "An integrated approach for obtaining biodiesel, sterols, gossypol, and raffinose from cottonseed on a biorefinery concept," Energy, Elsevier, vol. 70(C), pages 149-158.
    5. Anne Shayene Campos de Bomfim & Daniel Magalhães de Oliveira & Eric Walling & Alexandre Babin & Grégory Hersant & Céline Vaneeckhaute & Marie-Josée Dumont & Denis Rodrigue, 2022. "Spent Coffee Grounds Characterization and Reuse in Composting and Soil Amendment," Waste, MDPI, vol. 1(1), pages 1-19, August.
    6. Laura Sisti & Annamaria Celli & Grazia Totaro & Patrizia Cinelli & Francesca Signori & Andrea Lazzeri & Maria Bikaki & Philippe Corvini & Maura Ferri & Annalisa Tassoni & Luciano Navarini, 2021. "Monomers, Materials and Energy from Coffee By-Products: A Review," Sustainability, MDPI, vol. 13(12), pages 1-19, June.

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