Probing Synergies between Lignin-Rich and Cellulose Compounds for Gasification

Martin J. Taylor, Apostolos K. Michopoulos, Anastasia A. Zabaniotou and Vasiliki Skoulou
Additional contact information
Martin J. Taylor: Energy and Environment Institute, University of Hull, Cottingham Road, Hull HU6 7RX, UK
Apostolos K. Michopoulos: Energy and Environmental Design of Buildings Research Lab, University of Cyprus, P.O. Box 20537, Nicosia 1678, Cyprus
Anastasia A. Zabaniotou: Department of Chemical Engineering, Aristotle University of Thessaloniki, P.O. Box 455, GR 541 24 Thessaloniki, Greece
Vasiliki Skoulou: Energy and Environment Institute, University of Hull, Cottingham Road, Hull HU6 7RX, UK

Energies, 2020, vol. 13, issue 10, 1-9

Abstract: 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 LP 48 CM 52 mixture across all air ratios. This was evidenced by a strong correlation between the produced H 2 and CO x . 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.

Keywords: gasification; lignocellulosic biomass waste; lignin; cellulose; Na promotion; water gas shift (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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