title: Bio-syngas production from agro-industrial biomass residues by steam gasification.
abstract: This study evaluated the steam gasification potential of three residues from Brazilian agro-industry by assessing their reaction kinetics and syngas production at temperatures from 650 to 850°C and a steam partial pressure range of 0.05 to 0.3bar. The transition temperature between kinetic control and diffusion control regimes was identified. Prior to the gasification tests, the raw biomasses, namely apple pomace, spent coffee grounds and sawdust, were pyrolyzed in a fixed-bed quartz tubular reactor under controlled conditions. Gasification tests were performed isothermally in a magnetic suspension thermobalance and the reaction products were analyzed by a gas chromatograph with TCD/FID detectors. According to the characterization results, the samples presented higher carbon and lower volatile matter contents than the biomasses. Nevertheless, all of the materials had high calorific value. Syngas production was influenced by both temperature and steam partial pressure. Higher concentrations of H2and CO were found in the conversion range of 50-80% and higher concentrations of CO2in conversions around 10%, for all the gasified biochars. The H2/CO decreased with increasing temperature, mainly in kinetic control regime, in the lower temperature range. The results indicate the gasification potential of Brazilian biomass residues and are an initial and important step in the development of gasification processes in Brazil.
authors: Department of Chemical Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil. Electronic address: tatiana.pacioni@gmail.com.
authors: Tatiana Ramos
authors: TR
authors: Pacioni
authors: Department of Chemical Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
authors: Diniara
authors: D
authors: Soares
authors: Department of Chemical Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
authors: Michele Di
authors: MD
authors: Domenico
authors: Department of Chemical Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
authors: Maria Fernanda
authors: MF
authors: Rosa
authors: Department of Chemical Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
authors: Regina de Fátima Peralta Muniz
authors: RFPM
authors: Moreira
authors: Department of Chemical Engineering, Federal University of Santa Catarina, 88040-900 Florianópolis, SC, Brazil.
authors: Humberto Jorge
authors: HJ
authors: José
mesh_terms: D000383:Agriculture; D056804:Biofuels; D018533:Biomass; D001938:Brazil; D002248:Carbon Monoxide; D002606:Charcoal; D006859:Hydrogen; D007220:Industrial Waste; D007700:Kinetics; D013227:Steam; D013696:Temperature; D018505:Waste Management / Q000379:methods*
chemical_list: D056804:Biofuels; D007220:Industrial Waste; D013227:Steam; C540010:biochar; D002606:Charcoal; D002248:Carbon Monoxide; D006859:Hydrogen
keywords: Biomass; Steam gasification; Syngas; Waste-to-energy