Probing synergies between lignin-rich and cellulose compounds for gasification

Taylor, Martin J.; Michopoulos, Apostolos K.; Zabaniotou, Anastasia A.; Skoulou, Vasiliki

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 °C 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 temperature, similar to lignin mixtures when undergoing pyrolysis.

Citation

Taylor, M. J., Michopoulos, A. K., Zabaniotou, A. A., & Skoulou, V. (2020). Probing synergies between lignin-rich and cellulose compounds for gasification. Energies, 13(10), Article 2590. https://doi.org/10.3390/en13102590

• Journal Article Type: Article
• Acceptance Date: May 17, 2020
• Online Publication Date: May 20, 2020
• Publication Date: May 2, 2020
• Deposit Date: May 17, 2020
• Publicly Available Date: May 18, 2020
• Journal: Energies
• Electronic ISSN: 1996-1073
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 13
• Issue: 10
• Article Number: 2590
• DOI: https://doi.org/10.3390/en13102590
• Keywords: Gasification; Lignocellulosic biomass waste; Lignin; Cellulose; Na promotion; Water gas shift
• Public URL: https://hull-repository.worktribe.com/output/3499472
• Publisher URL: https://www.mdpi.com/journal/energies
• Additional Information: Multidicsiplinary and intrenational work (Chemist, Mech Eng and Chemical Engineers from UK, Cyprus and Greece); ; Martin J. Taylor,1,2 Apostolos K. Michopoulos,3 Anastasia A. Zabaniotou4 and Vasiliki Skoulou1,2*; ; 1 Energy and Environment Institute, University of Hull, Cottingham Road, Hull, HU6 7RX, United Kingdom; 2 B3 Challenge Group, Department of Chemical Engineering, University of Hull, Cottingham Road, Hull HU6 7RX, United Kingdom; 3 Energy and Environmental Design of Buildings Research Lab, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus; 4 Department of Chemical Engineering, Aristotle University of Thessaloniki, PO. Box 455, University Campus, GR 541 24, Thessaloniki, Greece