Co-pyrolysis of brown macroalgae and pinecones in a fixed bed reactor

• Author(s): Silva, F.T. ; Nascimento, M. ; Pilão, R. M. ; Neto, M.P. ; Ribeiro, A.M.
• Date: 2024
• Persistent ID: http://hdl.handle.net/10400.22/29594
• Origin: Repositório Científico do Instituto Politécnico do Porto
• Document Type: Conference poster
• Language: English
• Contributor(s): REPOSITÓRIO P.PORTO

Description

This study presents results on the slow co-pyrolysis of Laminaria digitata (LD) and pinecones (PC), at an average temperature of 560 °C, for mass ratios LD/PC of 100/0, 50/50, 30/70, 10/90 and 0/100. The biochar yields varied from 35.3 to 31.2 %, for bio-oils, the yields were in the range of 23.3 to 39.9 %, and for the gas phase, between 41.4 to 28.9 %, as the amount of PC increased in the feeding mixture. The biochars were characterized in terms of proximate analysis and higher heating value (HHV). The properties of bio-oils that were determined included pH, density and HHV, as well as identification of compounds by infrared analysis. CO2, CO, CH4 and H2 were identified in the gas phase of all the experiments by gaschromatography, but the most produced gas was CO2, followed by CO.