Journal
FUEL
Volume 106, Issue -, Pages 697-706Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2012.10.064
Keywords
Biomass; Cellulose; Hemicellulose; Lignin; Gasification
Categories
Funding
- UK Engineering and Physical Sciences Research Council under EPSRC [EP/D053110/1]
- International Exchange Scheme from the Royal Society [IE110273]
- Early Career Research Scheme from the University of Sydney
- EPSRC [EP/J005029/1, EP/D053110/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/D053110/1, EP/J005029/1] Funding Source: researchfish
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Cellulose, hemicellulose and lignin are the main components of biomass. This work presents research into the pyrolysis/gasification of all three main components of biomass, in order to evaluate and compare their hydrogen production and also understand their gasification processes. A fixed bed, two-stage reaction system has been used employing various nickel-based catalysts. Gas concentration (CO, H-2, CO, CO2 and CH4) was analysed for the produced non-condensed gases. Oil byproducts were analysed by gas chromatography/mass spectrometry (GC/MS). Various techniques such as X-Ray Diffraction (XRD), scanning electron microscopy (SEM) coupled to an energy dispersive X-ray spectroscopy (EDXS), temperature-programmed oxidation (TPO) were applied to characterize the fresh or reacted catalysts. The experimental results show that the lignin sample generates the highest residue fraction (52.0 wt.%) among the three biomass components. When Ni-Zn-Al (1:1) catalyst was used in the gasification process, gas yield was increased from 62.4 to 68.2 wt.% for cellulose, and from 25.2 to 50.0 wt.% for the pyrolysis/gasification of lignin. Hydrogen production was increased from 7.0 to 18.7 (m mol g(-1) sample) when the Ni-Zn-Al (1:1) catalyst was introduced in the pyrolysis/gasification of cellulose. Among the investigated catalysts, Ni-Ca-Al (1:1) was found to be the most effective for hydrogen production from cellulose pyrolysis/gasification. (c) 2012 Elsevier Ltd. All rights reserved.
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