Comparative study on catalytic and non-catalytic pyrolysis of olive mill solid wastes


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.

Publication DOI:
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Energy and Bioproducts Research Institute (EBRI)
Additional Information: The final publication is available at Springer via
Uncontrolled Keywords: bio-oil,catalytic pyrolysis,fast pyrolysis,olive,olive husk,olive kernel,Environmental Engineering,Renewable Energy, Sustainability and the Environment,Waste Management and Disposal
Publication ISSN: 1877-2641
Last Modified: 22 Apr 2024 07:15
Date Deposited: 22 Feb 2017 15:00
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2018-02
Published Online Date: 2017-01-20
Accepted Date: 2016-12-19
Submitted Date: 2016-07-05
Authors: Christoforou, Elias A.
Fokaides, Paris A.
Banks, Scott W. (ORCID Profile 0000-0002-4291-2572)
Nowakowski, Daniel (ORCID Profile 0000-0001-8056-5316)
Bridgwater, Anthony V. (ORCID Profile 0000-0001-7362-6205)
Stefanidis, Stelios
Kalogiannis, Kostas G.
Iliopoulou, Eleni F.
Lappas, Angelos A.



Version: Accepted Version

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