Title:
Biochar Production and Characteristics from Pyrolysis of Residual Forest Biomass in a Fixed-bed Batch Reactor
Author(s):
Santos, M.C., Videira, M.G.S., Morim, A.C.P., Silva, F.G.C.S., Matos, M.A.A., Tarelho, L.A.C.
Document(s):
Paper
Poster
Abstract:
In this work, it was studied the pyrolysis process and the characteristics of the biochar produced using a fixed-bed batch reactor. The study compared the results of the biochar obtained by pyrolysis of different residual forest biomasses, namely, acacia, gorse and broom. In addition, some process conditions were varied, such as heating rate (10 and 20 °C·min-1), process temperature (450 and 550 °C) and residence time (10 and 30 min). The biochar, bio-oil and gas yield in the process was 0.26 to 0.36, 0.37 to 0.56 and 0.15 to 0.33 kg/kg biomass db. The volatile matter, fixed carbon and ash content were, respectively, in the range 0.10 to 0.28, 0.66 to 0.84 and 0.04 to 0.08 kg/kg biochar db. The carbon, oxygen and hydrogen content of the biochar was in the range 0.71 to 0.80, 0.10 to 0.20 and 0.02 to 0.03 kg/kg biochar db, respectively. The results showed that the obtained biochar presented an increase in the heating value, carbon and ash content, and a decrease in the volatile matter, oxygen and hydrogen content, compared with the crude biomass. The biochar characteristics are influenced by the type of biomass and the conditions and parameters of the process, and temperature is the process parameter that produces the greatest variation in these characteristics.
Keywords:
biomass, pyrolysis, biochar
Topic:
Biomass Conversion to Intermediate Bioenergy Carriers and Sustainable Biofuels
Subtopic:
Pyrolysis
Event:
31st European Biomass Conference and Exhibition
Session:
5BV.10.15
Pages:
979 - 985
ISBN:
978-88-89407-23-3
Paper DOI:
10.5071/31stEUBCE2023-5BV.10.15
Price:
FREE
