Sugarcane bagasse valorization to xylitol: techno-economic and life cycle assessment

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dc.contributor.authorShaji, Arun
dc.contributor.authorShastri, Yogendra
dc.contributor.authorKumar, Vinod
dc.contributor.authorRanade, Vivek V.
dc.contributor.authorHindle, Neil
dc.date.accessioned2022-05-03T11:26:15Z
dc.date.available2022-05-03T11:26:15Z
dc.date.issued2022-04-17
dc.description.abstractA detailed techno-economic analysis and life cycle assessment (LCA) of a novel bio-refinery that produces xylitol from sugarcane bagasse are provided. The proposed process includes dilute acid pretreatment in pressurized conditions followed by fermentation (upstream section). The fermentation broth is then sent for separation and purification to the downstream section. Calculations are performed for a plant with 4 t/h of dry bagasse throughput. With a fermentation yield of 0.54 g xylitol per g of xylose, the plant produced 437.4 kg/h of xylitol. Upstream data are adapted from experimental studies, while ASPEN PLUS® flowsheet simulation is used to obtain data for the downstream section. The xylitol production facility is assumed to be annexed to an existing sugar mill in India. The total utility requirement in the process is reduced using heat integration strategies. Cradle-to-gate scope is considered for the LCA and 1 kg of xylitol is taken as the functional unit. The product cost of xylitol is calculated to be 230 INR/kg (US$3.17/kg). For a 4 year payback period, the selling price of xylitol must be 450 INR/kg (US$6.2/kg). The fermentation and pretreatment sections are the major components of the product cost. The LCA results show that the life cycle greenhouse gas emissions are 2.759 kg CO2 eq. per kg xylitol. The electricity requirement within the plant is identified as the major source of greenhouse gas emissions, and reduction of fermentation duration is identified as a key factor. The results identify opportunities to improve the process from an economic as well as an environmental standpoint. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd.en_UK
dc.identifier.citationShaji A, Shastri Y, Kumar V, et al., (2022) Sugarcane bagasse valorization to xylitol: techno-economic and life cycle assessment. Biofuels, Bioproducts and Biorefining, Volume 16, Issue 5, September/October 2022, pp.1214-1226en_UK
dc.identifier.issn1932-104X
dc.identifier.urihttps://doi.org/10.1002/bbb.2368
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/17842
dc.language.isoenen_UK
dc.publisherWileyen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectBagasseen_UK
dc.subjectSustainabilityen_UK
dc.subjectIndiaen_UK
dc.subjectBiochemicalsen_UK
dc.subjectCircular bioeconomyen_UK
dc.titleSugarcane bagasse valorization to xylitol: techno-economic and life cycle assessmenten_UK
dc.typeArticleen_UK

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