RT info:eu-repo/semantics/article T1 Exploring the potential of conventional and flash pyrolysis methods for the valorisation of grape seed and chestnut shell biomass from agri-food industry waste A1 Pardo, R A1 Taboada Ruiz, L A1 Fuente, E A1 Ruiz, B A1 Díaz Somoano, M A1 Calvo, L.F. A1 Paniagua Bermejo, Sergio K1 Renewable and Green Energy K1 Biomasa K1 Bio-fuels K1 Renewable energy K1 Thermal pyrolysis processes K1 Biocombustibles K1 Energía renovable K1 Procesos de pirólisis térmica K1 22 Física K1 3303.06 Tecnología de la Combustión AB Residual biomass is a valuable and growing by-product, but often underutilized. This research aims to investigate the possible strategies for the energetic valorisation of agri-food industry wastes: grape seed and chestnut shell. Pyrolysis thermal process was the selected for this work. Applied to biomass, pyrolysis is a promising method for the simultaneous production of biochar, bio-oil, and gas. Two different pyrolysis processes were conducted: conventional pyrolysis at 750 °C and flash pyrolysis at 750 °C and 850 °C. Flash pyrolysis yielded superior product properties compared to conventional pyrolysis. The gas obtained through flash pyrolysis presented a four-fold higher high heating value due to increased CH4 and H2 content. Bio-oil contains over 90% of polycyclic aromatic hydrocarbons, and calorific value reached up to 32 MJ kg−1 for grape seed, which is 7% more than bioethanol HHV. Biochar can be used both as fuel or as activated carbon precursor due to its high carbon content (91%). Calorific value of chestnut shell biochar (32.7 MJ kg−1), comparable to mineral coals, increased by 72% with respect to the value of this untreated raw material. This work approved the potential of flash pyrolysis as a method to process biomass wastes in a renewable energy scenario. PB Elsevier SN 0961-9534 YR 2023 FD 2023 LK https://uvadoc.uva.es/handle/10324/61444 UL https://uvadoc.uva.es/handle/10324/61444 LA eng NO Biomass and Bioenergy, 2023, vol. 177, 106942 NO Producción Científica DS UVaDOC RD 23-dic-2024