In this study, catalytic and non-catalytic fast pyrolysis of dried olive husk and olive kernels was carried out. A bubbling fluidised bed reactor was used for the non-catalytic processing of the solid olive wastes. In-situ catalytic upgrading of biomass fast pyrolysis vapours was performed in a fixed bed bench-scale reactor at 500 °C, for catalyst screening purposes. A maximum bio-oil yield of 47.35 wt.% (on dry biomass) was obtained from non-catalytic fast pyrolysis at a reaction temperature of 450 °C, while the bio-oil yield was decreased at 37.14 wt.% when the temperature was increased to 500 °C. In the case of the fixed bed unit tests, the highest liquid (52.66 wt.%) and organics (30.99 wt.%) yield was achieved with the use of the non-catalytic silica sand. Depending on the catalytic material, the liquid yield ranged from 47.03 to 43.96 wt.% the organic yield from 21.15 to 16.34 wt.% on dry biomass. Solid products were increased from 28.23 wt.% for the non-catalytic run to 32.81 wt.% on dry biomass, when MgO (5% Co) was used.
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The authors wish to acknowledge the financial support from the BRISK project (Biofuels Research Infrastructure for Sharing Knowledge).
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Christoforou, E.A., Fokaides, P.A., Banks, S.W. et al. Comparative Study on Catalytic and Non-Catalytic Pyrolysis of Olive Mill Solid Wastes. Waste Biomass Valor 9, 301–313 (2018). https://doi.org/10.1007/s12649-016-9809-5
- Olive husk
- Olive kernel
- Fast pyrolysis
- Catalytic pyrolysis