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Oxidative torrefaction and torrefaction-based biorefining of biomass: a critical review

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dc.contributor.author Devaraja, UMA
dc.contributor.author Dissanayake, CLW
dc.contributor.author Gunarathne, DS
dc.contributor.author Chen, W-H
dc.date.accessioned 2023-06-13T05:49:02Z
dc.date.available 2023-06-13T05:49:02Z
dc.date.issued 2022
dc.identifier.citation Devaraja, U. M. A., Dissanayake, C. L. W., Gunarathne, D. S., & Chen, W.-H. (2022). Oxidative torrefaction and torrefaction-based biorefining of biomass: A critical review. Biofuel Research Journal, 9(3), 1672–1696. https://doi.org/10.18331/BRJ2022.9.3.4 en_US
dc.identifier.issn 2292-8782(online) en_US
dc.identifier.uri http://dl.lib.uom.lk/handle/123/21097
dc.description.abstract Torrefaction is a vital pretreatment technology for thermochemical biorefinery applications like pyrolysis, gasification, and liquefaction. Oxidative torrefaction, an economical version of torrefaction, has recently gained much attention in the renewable energy field. Recent literature on inert and oxidative torrefaction was critically reviewed in this work to provide necessary guidance for future research and commercial implementations. The critical performance parameters of torrefaction for thermochemical biorefinery applications, such as solid yield, energy yield, carbon enhancement, higher heating value (HHV) enhancement, and energy-mass co-benefit index (EMCI), were also analyzed. Agricultural waste, woody biomass, and microalgae were considered. The analysis reveals that woody biomass could equally benefit from oxidative or inert torrefaction. In contrast, inert torrefaction was found more suitable for agricultural wastes and microalgae. Using flue gas as the oxidative torrefaction medium and waste biomass as the feedstock could achieve a circular economy, improving the sustainability of oxidative torrefaction for thermochemical biorefineries. The significant challenges in oxidative torrefaction include high ash content in torrefied agricultural waste, the oxidative thermal runaway of fibrous biomass during torrefaction, temperature control, and scale-up in reactors. Some proposed solutions to address these challenges are combined washing and torrefaction pretreatment, balancing oxygen content, temperature, and residence time, depending on the biomass type, and recirculating torrefaction gases. en_US
dc.language.iso en en_US
dc.publisher Green Wave Publishing of Canada en_US
dc.subject Oxidative torrefaction en_US
dc.subject Inert torrefaction en_US
dc.subject Biochar en_US
dc.subject Sustainability en_US
dc.subject Thermochemical biorefineries en_US
dc.subject Circular economy en_US
dc.title Oxidative torrefaction and torrefaction-based biorefining of biomass: a critical review en_US
dc.type Article-Full-text en_US
dc.identifier.year 2022 en_US
dc.identifier.journal Biofuel Research Journal en_US
dc.identifier.issue 3 en_US
dc.identifier.volume 9 en_US
dc.identifier.pgnos 1672–1696 en_US
dc.identifier.doi https://doi.org/10.18331/BRJ2022.9.3.4 en_US


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