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Energy Utilization of Spent Coffee Grounds in the Form of Pellets

Author

Listed:
  • Radovan Nosek

    () (Department of Power Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitna 1, 010-26 Žilina, Slovakia)

  • Maw Maw Tun

    () (VŠB-Technical University of Ostrava, 17, Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic)

  • Dagmar Juchelkova

    () (VŠB-Technical University of Ostrava, 17, Listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic)

Abstract

Nowadays it is important to limit the use and combustion of fossil fuels such as oil and coal. There is a need to create environmentally acceptable projects that can reduce or even stop greenhouse gas emissions. In this article, we dealt with the objectives of energy policy with regard to environmental protection, waste utilization, and conservation of natural resources. The main objective of the research was to assess the possibility of the use of spent coffee grounds (SCG) as fuel. As a part of the solution, the processing of coffee waste in the form of pellets, analysis of calorific value and combustion in the boiler were proposed. The experiments were done with four samples of pellets. These samples were made from a mixture of wood sawdust and spent coffee grounds with ratio 30:70 (wood sawdust: spent coffee grounds), 40:60, 50:50 and 100% of spent coffee grounds. The calorific values were compared with wood sawdust pellets (17.15 MJ.kg −1 ) and the best lower calorific value of 21.08 MJ.kg −1 was measured for 100% of spent coffee grounds. This sample did not achieve the desired performance during the combustion in the boiler due to the low strength of the sample.

Suggested Citation

  • Radovan Nosek & Maw Maw Tun & Dagmar Juchelkova, 2020. "Energy Utilization of Spent Coffee Grounds in the Form of Pellets," Energies, MDPI, Open Access Journal, vol. 13(5), pages 1-8, March.
  • Handle: RePEc:gam:jeners:v:13:y:2020:i:5:p:1235-:d:329515
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    References listed on IDEAS

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    3. Kang, Sae Byul & Oh, Hong Young & Kim, Jong Jin & Choi, Kyu Sung, 2017. "Characteristics of spent coffee ground as a fuel and combustion test in a small boiler (6.5 kW)," Renewable Energy, Elsevier, vol. 113(C), pages 1208-1214.
    4. Farzad Moradian & Anita Pettersson & Solvie Herstad Svärd & Tobias Richards, 2013. "Co-Combustion of Animal Waste in a Commercial Waste-to-Energy BFB Boiler," Energies, MDPI, Open Access Journal, vol. 6(12), pages 1-18, November.
    5. Lisowski, Aleksander & Olendzki, Dariusz & Świętochowski, Adam & Dąbrowska, Magdalena & Mieszkalski, Leszek & Ostrowska-Ligęza, Ewa & Stasiak, Mateusz & Klonowski, Jacek & Piątek, Michał, 2019. "Spent coffee grounds compaction process: Its effects on the strength properties of biofuel pellets," Renewable Energy, Elsevier, vol. 142(C), pages 173-183.
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    Cited by:

    1. Michal Holubčík & Ivana Klačková & Peter Ďurčanský, 2020. "Pyrolysis Conversion of Polymer Wastes to Noble Fuels in Conditions of the Slovak Republic," Energies, MDPI, Open Access Journal, vol. 13(18), pages 1-12, September.
    2. Duk-Gam Woo & Sang Hyeon Kim & Tae Han Kim, 2021. "Solid Fuel Characteristics of Pellets Comprising Spent Coffee Grounds and Wood Powder," Energies, MDPI, Open Access Journal, vol. 14(2), pages 1-17, January.
    3. Mendoza Martinez, Clara Lisseth & Saari, Jussi & Melo, Yara & Cardoso, Marcelo & de Almeida, Gustavo Matheus & Vakkilainen, Esa, 2021. "Evaluation of thermochemical routes for the valorization of solid coffee residues to produce biofuels: A Brazilian case," Renewable and Sustainable Energy Reviews, Elsevier, vol. 137(C).

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