Gasification of non-woody biomass: A literature review. (June 2018)

• Record Type: Journal Article
• Authors: Widjaya, Elita R.; Chen, Guangnan; Bowtell, Les; Hills, Catherine
• Is Part Of: Renewable & sustainable energy reviews. Volume 89(2018)
• Page Start: 184
• Page End: 193
• Publication Date: 2018-06
• Subjects: Non-woody -- Biomass -- Densification -- Gasification -- Co-gasification; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.rser.2018.03.023
• Languages: English
• ISSNs: 1364-0321

Abstract

Abstract: Non-woody biomass, having a lower lignin content than woody materials, is a common waste material found in agricultural processing plants and fields. Non-woody biomass is often bulky and has a comparatively low energy content. However, non-woody materials sourced from agricultural waste are abundant and cheap. Experimental studies into gasification of non-woody biomass have been conducted by various researchers. This paper reviews feedstock characteristics, pre-treatments, gasification methods, and future directions of this technology. Due to the heterogeneous nature of non-woody biomass, it is critical to apply suitable pre-treatments prior to gasification. Combining non-woody biomass with a small percentage of high grade carbon sourced from biochar or coal into fuel pellets for co-gasification has the potential to improve fuel quality. Synergistic effects of non-woody biomass-coal/charcoal co-gasification can also reduce tar formation and increase the occurrence of mineral based catalytic reactions. Factors influencing these effects are often complex and require further investigation. 15–20% of the energy content of fuel pellets may be needed to power the biomass pre-treatment process. The gasification of pelletised non-woody waste provides an attractive alternative fuel source to achieve agricultural energy self-sufficiency and off-grid operation. Highlights: Non woody biomass gasification. Characterisation of the feedstock properties. Pre-treatment of the feedstock to allow effective gasification operation. Gasification process parameters and constraints. Future direction of pelleting the non-woody biomass as solid fuel.