Physicochemical and thermal characteristics of sugarcane straw and its cellulignin

Autor(es)

Canettieri, Eliana Vieira ^[1] ; da Silva, Vinicius Pereira ^[2] ; Soares Neto, Turibio Gomes ^[2] ; Hernandez-Perez, Andres Felipe ^[3] ; Virginio da Silva, Debora Danielle ^[4] ; Dussan, Kelly Johana ^[4] ; Almeida Felipe, Maria das Gracas ^[3] ; de Carvalho, Jr., Joao Andrade ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, UNESP, Dept Energy, Campus Guaratingueta, BR-12516410 Guaratingueta, SP - Brazil

^[2] Natl Inst Space Res INPE, Associated Lab Combust & Prop, BR-12630970 Cachoeira Paulista, SP - Brazil

^[3] Sao Paulo Univ USP, Biotechnol Dept, Engn Sch Lorena EEL, BR-12602810 Lorena, SP - Brazil

^[4] Sao Paulo State Univ, UNESP, Biochem & Chem Technol Dept, Chem Inst, BR-14800900 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Society of Mechanical Sciences and Engineering; v. 40, n. 9 SEP 2018.
• Citações Web of Science: 2

Resumo

Combustion of biomass is considered to be a source of atmospheric pollution and, therefore, is one of the important sources of CO2 emission. This paper discusses the burning of sugarcane straw and its cellulignin in laboratory tests to determine the characteristics and emission factors, of this combustion process. Elemental, chemical composition and thermogravimetric analyses were performed for both samples. Carbon contents for sugarcane straw and its cellulignin were estimated, and the values found were 45.69% and 44.28%, respectively. Higher heating values (HHV) were determined by experimental methods with a calorimetric bomb and were estimated by theoretical equations. The best results were obtained when only the lignin's content was considered. During the experimental tests to determine HHVs, cellulignin did not burn completely, while straw burned completely. This could be because cellulignin contains more ashes, resulting in more residual ash after burning. Pollutant emission of CO2, CO, NO and UHC was evaluated in the flaming and smoldering combustion phases. NO concentrations were not presented because they were less than 10 ppm. The average theoretical and experimental emission factors for CO2 were analyzed. CO2 emissions factors found for sugarcane straw and their cellulignin were 1316 +/- 83.6 and 1275 +/- 105 g kg(-1) of dry burned biomass, respectively. The evaluated parameters are useful to incorporate these materials into a future biorefinery. (AU)

• Processo FAPESP: 13/27142-0 - Desenvolvimento de plataforma tecnológica para incorporação da palha de cana-de-açúcar em uma biorrefinaria: produção de xilitol e energia
• Beneficiário: Maria das Graças de Almeida Felipe
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/04441-1 - Caracterização físico-química e análise da combustão de madeiras do bioma amazônico
• Beneficiário: Eliana Vieira Canettieri
• Modalidade de apoio: Auxílio à Pesquisa - Regular