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7. Characterization of residual biomasses from the coffee production chain and assessment the potential for energy purposes

Author

Mendoza Martinez, Clara Lisseth, Alves Rocha, Elém Patrícia, Oliveira Carneiro, Angélica de Cassia, Borges Gomes, Fernando José, Ribas Batalha, Larisse Aparecida, Vakkilainen, Esa, Cardoso, Marcelo, Lappeenrannan-Lahden teknillinen yliopisto LUT, Lappeenranta-Lahti University of Technology LUT, and fi=School of Energy Systems|en=School of Energy Systems

Subjects
Coffee shrub, Waste quantification, food and beverages, Chemical characterization, Waste to energy
Abstract

Chemical quantitative characterization of biomass is relevant for waste to energy recovery technologies. In the present work, selected agroindustry solid residues from coffee crops – parchment and coffee shrub, i.e., stem, branches and leaves – were characterized. Properties such proximate, ultimate and biochemical composition, energy content, and thermogravimetric analysis, were evaluated. Results showed high values of higher heating value and volatile matter content. The silica contents are small for all samples. Additionally, the high content of extractives and lignin, reveal that these residual biomasses are more suitable for charcoal than cellulose pulp production. The extensive residue characterization provided valuable data that helped in outcome of the evaluation of different conversion technologies as being an environmentally friendly alternative, contributing to sustainable, reliable, carbon-neutral form of modern energy and upgrade the large quantity of waste generated by the coffee industry into energetically valued residues, by improving their management. Post-print / Final draft

Published
2018

8. Energy and mass balance in the pyrolysis process of eucalyptus wood

Author

Jesus, Marcia Silva, Napoli, Alfredo, Trugilho, Paulo Fernando, Abreu Junior, Áureo A., Mendoza Martinez, Clara Lisseth, Pereira Freitas, Thaís, Jesus, Marcia Silva, Napoli, Alfredo, Trugilho, Paulo Fernando, Abreu Junior, Áureo A., Mendoza Martinez, Clara Lisseth, and Pereira Freitas, Thaís

Abstract

The aim of this study was to evaluate the effect of the moisture content in the mass and energy balance of Eucalyptus wood during the pyrolysis process in a macro-lab scale. Two cylindrical specimens of 30 cm length, 12 cm diameter, and two pre-established moisture contents of 0.83% and 13%, were evaluated. The experiment was carried out in an electric oven, heating rate of 5oC.min-1 and final temperature of 500oC were the process conditions. Mass and energetic potentials of the non-condensable gases flow, were estimated from the data provided by the software Macro Thermogravimetric. The moisture content did not influence significantly in charcoal yields (30.2 e 30.4%). The highest energetic value of the non-condensable gases (2.549 MJ) during wood pyrolysis at 0.83% moisture content, was achieve. Water presence on wood decrease the concentration of the energetic compounds. The total energy concentrated in the charcoal and sub-products was 53% and 47%, respectively. The significant amount of sub-products suggests to consider the mass balance and flow energy compounds in further researches for integration and optimization technologies in both, production and gas burning processes, aiming to generate new industrial mechanisms to improve yield and quality of the products.

Published
2018

9. Thermal conversion of biomass: a comparative review of different pyrolysis processes.

Author

Silva de Jesus, Márcia, Mendoza Martinez, Clara Lisseth, Junqueira Costa, Luciano, Graciosa Pereira, Emanuele, and de Cássia Oliveira Carneiro, Angélica

Subjects
BIOMASS, PYROLYSIS, CARBONIZATION, FOSSIL fuels, BIOENERGETICS
Abstract

Copyright of Brazilian Journal of Wood Science / Revista Ciência da Madeira is the property of Brazilian Journal of Wood Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2020
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10. Bioenergy Technology Solutions in Brazil.

Author

Mendoza Martinez, Clara Lisseth, Silva de Jesus, Márcia, Vakkilainen, Esa, Cardoso, Marcelo, and Matheus Almeida, Gustavo

Subjects
BIOMASS energy, CLIMATE change, RENEWABLE energy sources, ENERGY management, WATER power
Abstract

Copyright of Brazilian Journal of Wood Science / Revista Ciência da Madeira is the property of Brazilian Journal of Wood Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2019
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