ISSN: 1659-2751



Characterization of the Energy Potential of Coffee (Coffea arabica), Cassava (Manihot sculenta), Pineapple (Ananas comosus) y Physic Nut (Jatropha curcas)


In Costa Rica, 12 786 GW are produced by power plants, but only 1 % of the electricity is produced by biomass. Being an agricultural country that generates large amounts of waste from crop production, coffee parchment, cassava leaves and stems, pineapple stubble, and shells and seed of the physic nut were evaluated for their energy supply parameters as well as for their potential as fuels. Energy potential measurements were made using a calorimeter pump. The physic nut seeds have the highest energy potential (23.260 kJ/g). However, of the crops evaluated, the pineapple stubble has the greatest energy supply (85 477.7 TJ/year), due to the volume of pineapple crops planted. According to the chemical analyses of the substrates evaluated, the C was the only element related to the energy potential, as compared to the other elements evaluated which were in concentrations too low to determine any correlation.

Key words: biomass, energy supply, heating power, agricultural residues.

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