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Rui Moreira,Fernando Bimbela,Noemí Gil-Lalaguna,José Luis Sánchez,António Portugal 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.101 No.-
Using lignocellulosic char instead of the original biomass avoids the need for costly cleaning andconditioning stages of the producer gasification gas. However, lignocellulosic char gasification has beenless extensively studied than gasification of lignocellulosic biomass, and a review of published works onthis topic was missing. In this review the present status of char gasification technologies and their futureprospects are critically discussed, including possible research opportunities. To date, most studies onchar gasification have been performed in thermogravimetric analyzers (TGA) or TGA-like experimentalsetups. The major setback of TGA and TGA-like equipment is that they do not mimic the actual reactionconditions occurring in gasification reactors, which impedes a direct extrapolation of thefindings duringthe scale-up of different gasification technologies. For this reason, in this literature review focus was puton studies undertaken in industrially relevant reactors, both in batch and continuous configurations. Overall, char gasification can be deemed a valid alternative for clean syngas production, contributing toan integral valorization of lignocellulosic residues within different biorefinery schemes. Of these, processintensification by microwave heating offers interesting opportunities for research and scaling-up, thoughefforts must be directed toward developing continuous microwave-assisted gasification processes.
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