Evaluation of Green Coffee-Roasting Biogas with Modeling Valorization of Possible Solutions

Giuseppe Campo, Alberto Cerutti, Marco Ravina, Deborah Panepinto, Vincenzo A. Riggio and Mariachiara Zanetti
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Giuseppe Campo: Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Torino, Italy
Alberto Cerutti: Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Torino, Italy
Marco Ravina: Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Torino, Italy
Deborah Panepinto: Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Torino, Italy
Vincenzo A. Riggio: Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Torino, Italy
Mariachiara Zanetti: Department of Environment, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Torino, Italy

IJERPH, 2020, vol. 17, issue 19, 1-14

Abstract: According to the European Union Directive 2009/28/EC, the goals of obtaining 20% of all energy requirements from renewable sources and a 20% reduction in primary energy use must be fulfilled by 2020. In this work, an evaluation was performed, from the environmental and energy point of view, of anaerobic digestion as a valid solution for the treatment of the byproducts obtained from the coffee-roasting process. In particular, thermophilic anaerobic digestion tests were carried out. Output values from the laboratory were used as input for the MCBioCH 4 model to evaluate the produced flow of biogas and biomethane and two different biogas valorization alternatives, namely, the traditional exploitation of biogas for heat/energy production and biomethane conversion. The results of the preliminary simulation showed that a full-scale implementation of the coffee waste biogas production process is technically feasible and environmentally sustainable. Furthermore, the performed analysis validates a general methodology for energy production compatibility planning.

Keywords: anaerobic digestion; coffee; biomass; byproducts; circular economy; climate change; environmental impact (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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