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Syngas production from olive tree cuttings and olive kernels in a downdraft fixed-bed gasifier

Skoulou, V.; Zabaniotou, A.; Stavropoulos, G.; Sakelaropoulos, G.

Authors

Profile image of Vicky Skoulou

Dr Vicky Skoulou V.Skoulou@hull.ac.uk
Graduate Research Director (GRD) of School of Engineering ; Senior Lecturer (Assoc. Prof.) in Chemical Engineering-Bioenergy ; PI of the B3: Biomass Waste- BioenergH2- Biochars Challenge Group of PGRs and PDRAs

A. Zabaniotou

G. Stavropoulos

G. Sakelaropoulos



Abstract

This study presents a laboratory fixed-bed gasification of olive kernels and olive tree cuttings. Gasification took place with air, in a temperature range of 750-950 °C, for various air equivalence ratios (0.14-0.42) and under atmospheric pressure. In each run, the main components of the gas phase were CO, CO 2 , H 2 and CH 4 . Experimental results showed that gasification with air at high temperatures (950 °C) favoured gas yields. Syngas production increased with reactor temperature, while CO 2 , CH 4 , light hydrocarbons and tar followed the opposite trend. An increase of the air equivalence ratio decreased syngas production and lowered the product gas heating value, while favouring tar destruction. It was found that gas from olive tree cuttings at 950 °C and with an air equivalence ratio of 0.42 had a higher LHV (9.41 MJ / Nm 3 ) in comparison to olive kernels (8.60 MJ / Nm 3 ). Olive kernels produced more char with a higher content of fixed carbon (16.39 w/w%) than olive tree cuttings; thus, they might be considered an attractive source for carbonaceous material production. © 2007 International Association for Hydrogen Energy.

Citation

Skoulou, V., Zabaniotou, A., Stavropoulos, G., & Sakelaropoulos, G. (2008). Syngas production from olive tree cuttings and olive kernels in a downdraft fixed-bed gasifier. International Journal of Hydrogen Energy, 33(4), 1185-1194. https://doi.org/10.1016/j.ijhydene.2007.12.051

Journal Article Type Article
Acceptance Date Dec 18, 2007
Online Publication Date Feb 6, 2008
Publication Date 2008-02
Deposit Date Feb 14, 2018
Journal International Journal of Hydrogen Energy
Print ISSN 0360-3199
Electronic ISSN 0360-3199
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 33
Issue 4
Pages 1185-1194
DOI https://doi.org/10.1016/j.ijhydene.2007.12.051
Keywords Fuel Technology; Renewable Energy, Sustainability and the Environment; Energy Engineering and Power Technology; Condensed Matter Physics
Public URL https://hull-repository.worktribe.com/output/518076
Publisher URL https://www.sciencedirect.com/science/article/pii/S0360319907008002?via%3Dihub