Pyrolysis of Energy Cane Bagasse: Investigating Kinetics, Thermodynamics, and Effect of Temperature on Volatile Products
Denisson O. Liborio,
Juan F. Gonzalez,
Santiago Arias,
Guilherme D. Mumbach,
Jose Luiz F. Alves,
Jean C. G. da Silva,
Jose Marcos F. Silva,
Celmy M. B. M. Barbosa,
Florival R. Carvalho,
Ricardo R. Soares,
Diogo A. Simões,
Jose Geraldo A. Pacheco
Affiliations
Denisson O. Liborio
Laboratory of Refining and Cleaner Technology-LabRefino-Lateclim, Department of Chemical Engineering, Institute for Petroleum and Energy Research-LITPEG, Federal University of Pernambuco, Av da Arquitetura, Recife 50740-540, PE, Brazil
Juan F. Gonzalez
Laboratory of Refining and Cleaner Technology-LabRefino-Lateclim, Department of Chemical Engineering, Institute for Petroleum and Energy Research-LITPEG, Federal University of Pernambuco, Av da Arquitetura, Recife 50740-540, PE, Brazil
Santiago Arias
Laboratory of Refining and Cleaner Technology-LabRefino-Lateclim, Department of Chemical Engineering, Institute for Petroleum and Energy Research-LITPEG, Federal University of Pernambuco, Av da Arquitetura, Recife 50740-540, PE, Brazil
Guilherme D. Mumbach
Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil
Jose Luiz F. Alves
Department of Chemical Engineering and Food Engineering, Federal University of Santa Catarina, Florianópolis 88040-900, SC, Brazil
Jean C. G. da Silva
School of Agricultural Engineering, University of Campinas (GBMA/FEAGRI/UNICAMP), Campinas 13083-875, SP, Brazil
Jose Marcos F. Silva
Laboratory of Refining and Cleaner Technology-LabRefino-Lateclim, Department of Chemical Engineering, Institute for Petroleum and Energy Research-LITPEG, Federal University of Pernambuco, Av da Arquitetura, Recife 50740-540, PE, Brazil
Celmy M. B. M. Barbosa
Laboratory of Refining and Cleaner Technology-LabRefino-Lateclim, Department of Chemical Engineering, Institute for Petroleum and Energy Research-LITPEG, Federal University of Pernambuco, Av da Arquitetura, Recife 50740-540, PE, Brazil
Florival R. Carvalho
Fuel Laboratory, Institute for Petroleum and Energy Research-LITPEG, Federal University of Pernambuco, Av da Arquitetura, Recife 50740-540, PE, Brazil
Ricardo R. Soares
Faculty of Chemical Engineering, Federal University of Uberlândia, Uberlândia 38408-144, MG, Brazil
Diogo A. Simões
Fuel Laboratory, Institute for Petroleum and Energy Research-LITPEG, Federal University of Pernambuco, Av da Arquitetura, Recife 50740-540, PE, Brazil
Jose Geraldo A. Pacheco
Laboratory of Refining and Cleaner Technology-LabRefino-Lateclim, Department of Chemical Engineering, Institute for Petroleum and Energy Research-LITPEG, Federal University of Pernambuco, Av da Arquitetura, Recife 50740-540, PE, Brazil
Energy cane is a genotype derived from species of sugarcane (Saccharum officinarum and Saccharum spontaneum) with a lower sucrose content and higher fiber content for bioenergy purposes. It is a rustic plant that demands less fertile soils that do not compete with food crops. In this work, an analysis of energy cane bagasse pyrolysis products was performed, assessing the effect of reaction temperature and kinetic and thermodynamic parameters. Anhydrosugars, such as D-allose, were the primary compounds derived from the decomposition of energy cane at 500 °C. Methyl vinyl ketone and acetic acid were favored at 550 and 600 °C. At 650 °C, methyl glyoxal, acetaldehyde and hydrocarbons were favored. Among the hydrocarbons observed, butane, toluene and olefins such as 1-decene, 1-undecene, 1-tridecene and 1-tetradecene were the most produced. The Friedman isoconversional method was able to determine the average activation energies in the ranges 113.7−149.4, 119.9−168.0, 149.3−196.4 and 170.1−2913.9 kJ mol−1 for the decomposition of, respectively, pseudo-extractives, pseudo-hemicellulose, pseudo-cellulose and pseudo-lignin. The thermodynamic parameters of activation were determined within the ranges of 131.0 to 507.6 kJ mol−1 for ΔH, 153.7 to 215.2 kJ mol−1 for ΔG and −35.5 to 508.8 J mol−1 K−1 for ΔS. This study is very encouraging for the cultivation and use of high-fiber-content energy cane bagasse, after sucrose extraction, to produce biofuels as an alternative to the current method of conversion into electricity by low-efficiency burning.
