Comparative study for hardwood and softwood forest biomass: Chemical characterization, combustion phases and gas and particulate matter emissions

Autor(es)

Amaral, Simone Simoes ^[1] ; de Carvalho Junior, Joao Andrade ^[1] ; Martins Costa, Maria Angelica ^[2] ; Soares Neto, Turibio Gomes ^[3] ; Dellani, Rafael ^[2] ; Scavacini Leite, Luiz Henrique ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Dept Energy, UNESP, Botucatu, SP - Brazil

^[2] Univ Estadual Paulista, Lumber Ind Engn Dept, UNESP, Botucatu, SP - Brazil

^[3] Brazilian Space Res Inst INPE, Combust & Prop Associate Lab, Cachoeira Paulista - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Bioresource Technology; v. 164, p. 55-63, JUL 2014.
• Citações Web of Science: 24

Resumo

Two different types of typical Brazilian forest biomass were burned in the laboratory in order to compare their combustion characteristics and pollutant emissions. Approximately 2 kg of Amazon biomass (hardwood) and 2 kg of Araucaria biomass (softwood) were burned. Gaseous emissions of CO2, CO, and NOx and particulate matter smaller than 2.5 mu m (PM2.5) were evaluated in the flaming and smoldering combustion phases. Temperature, burn rate, modified combustion efficiency, emissions factor, and particle diameter and concentration were studied. A continuous analyzer was used to quantify gas concentrations. A DataRam4 and a Cascade Impactor were used to sample PM2.5. Araucaria biomass (softwood) had a lignin content of 34.9%, higher than the 23.3% of the Amazon biomass (hardwood). CO2 and CO emissions factors seem to be influenced by lignin content. Maximum concentrations of CO2, NOx and PM2.5 were observed in the flaming phase. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 08/04490-4 - Combustão de biomassa de florestas tropicais
• Beneficiário: João Andrade de Carvalho Junior
• Modalidade de apoio: Auxílio à Pesquisa - Temático