Bio-Coal Production With Agroforestry Biomass In Brazil

• Published in: Maderas Vol. 21; no. 3; pp. 357 - 366
• Main Authors: Cassia Oliveira Carneiro, Angélica de, Alves Magalhães, Mateus, de Freitas Fialho, Lucas, Ladeira Carvalho, Ana Márcia Macedo, Miguel Simões da Silva, Carlos, Costa Peres, Letícia, Gusmão Figueiró, Clarissa
• Format: Journal Article
• Language: English
• Published: Universidad del Bío-Bío 01.07.2019
• Subjects: Chemical composition; energy; pyrolysis; temperature; yield
• ISSN: 0717-3644; 0718-221X

Pyrolysis is a promising technology for thermal conversion of lignocellulosic biomass into a higher added value fuel. The aim of this study was to analyze the potential of four agroforestry biomass to produce energy as a raw material or as a bio-coal. In this study, slow pyrolysis was conducted in three final temperatures to evaluate the bio-coal production of four agroforestry biomasses widely available in Brazil. The biomass used was sugarcane bagasse (Saccharum sp.), bamboo (Dendrocalamus giganteus), straw bean (Phaseolus vulgaris) and eucalypts wood chips (Eucalyptus sp.). In the first part was presented the raw biomasses proprieties, such as lignin, carbon, hydrogen and ash content. In the second part was showed the bio-coal proprieties, such as, gravimetric and fixed carbon yield, fixed carbon and ash content. These bio-coal results were showed as a function of final temperature of pyrolysis. The best energy indicators for bio-coal production, such as fixed carbon yield, high heating value, was found in the bamboo and eucalypts. The bagasse and straw bean biomasses possess high concentrations of ash and low lignin content when compared with the other biomasses assessed and are less suitable to produce bio-coal.