Abstract
Sequential fractionation (SF) of woody biomass using acid hydrotrope p-toluenesulfonic acid (p-TsOH) as reaction medium was investigated. Hemicellulosic sugars, lignin, and cellulose-rich solid were harvested as the main products from the stepwise deconstruction of biomass as results of hemicelluloses hydrolysis and subsequent lignin dissolution. The first step of SF employed 2wt% p-TsOH, far below the minimum hydrotrope concentration (MHC) of 11.5wt%, and reached 23.5 % of biomass dissolution with 55.1 % removal of xylan from wood at 120 °C for 2 h. The second step of SF was characterized with mild conditions of 100 °C, 40wt% p-TsOH, and one hour, and achieved 83 % lignin dissolution with well-preserved structure. The obtained cellulose-rich solid from SF showed a high crystallinity index of 73.3 % and a complete recovery of glucan. This means excellent performance of SF for sustainable bio-refining.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
