Energy Utilization of Spent Coffee Grounds in the Form of Pellets

Radovan Nosek, Maw Maw Tun and Dagmar Juchelkova
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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

Energies, 2020, vol. 13, issue 5, 1-8

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.

Keywords: spent coffee grounds; sawdust; pellets; calorific value; combustion (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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