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Gasification of non-woody biomass: A literature review

Elita R. Widjaya, Guangnan Chen, Les Bowtell and Catherine Hills

Renewable and Sustainable Energy Reviews, 2018, vol. 89, issue C, 184-193

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.

Keywords: Non-woody; Biomass; Densification; Gasification; Co-gasification (search for similar items in EconPapers)
Date: 2018
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Handle: RePEc:eee:rensus:v:89:y:2018:i:c:p:184-193