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Probing Synergies between Lignin-Rich and Cellulose Compounds for Gasification

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Energy and Environment Institute, University of Hull, Cottingham Road, Hull HU6 7RX, UK
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B3 Challenge Group, Department of Chemical Engineering, University of Hull, Cottingham Road, Hull HU6 7RX, UK
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Energy and Environmental Design of Buildings Research Lab, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
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Department of Chemical Engineering, Aristotle University of Thessaloniki, P.O. Box 455, GR 541 24 Thessaloniki, Greece
*
Author to whom correspondence should be addressed.
Energies 2020, 13(10), 2590; https://doi.org/10.3390/en13102590
Received: 22 April 2020 / Revised: 15 May 2020 / Accepted: 17 May 2020 / Published: 20 May 2020
(This article belongs to the Section Bio-Energy)
The fixed-bed gasification of lignin-rich and -deficient mixtures was carried out to probe the synergistic effects between two model compounds, Lignin Pink (LP) rich in Na and Cellulose Microcrystalline (CM). Reaction conditions utilized the most commonly used air ratios in current wood gasifiers at 750 and 850 °C. It was found that by increasing the lignin content in the mixture, there was a selectivity change from solid to gas products, contrary to a similar study previously carried out for pyrolysis. This change in product mix was promoted by the catalytic effect of Na edge recession deposits on the surface of the char. As a result, the water gas shift reaction was enhanced at 850 °C for the LP48CM52 mixture across all air ratios. This was evidenced by a strong correlation between the produced H2 and COx. Meanwhile, by lowering the lignin content in the mixtures, the reactivity of cellulose microcrystalline was found to generate more char at higher temperatures, similar to lignin mixtures when undergoing pyrolysis. View Full-Text
Keywords: gasification; lignocellulosic biomass waste; lignin; cellulose; Na promotion; water gas shift gasification; lignocellulosic biomass waste; lignin; cellulose; Na promotion; water gas shift
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MDPI and ACS Style

Taylor, M.J.; Michopoulos, A.K.; Zabaniotou, A.A.; Skoulou, V. Probing Synergies between Lignin-Rich and Cellulose Compounds for Gasification. Energies 2020, 13, 2590.

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