Phenomenological Modeling of Formic Acid Fractionation of Sugarcane Bagasse by Integration of Operation Parameters as an Extended Combined Severity Factor
Open Access
- 7 May 2021
- Vol. 26 (9), 2753
- https://doi.org/10.3390/molecules26092753
Abstract
In order to more conveniently simulate and optimize the solubilization of sugarcane bagasse components during formic acid (FA) fractionation, an extended combined severity factor (CSFext) was defined to integrate various operation parameters as a single factor. Two phenomenological models based on Arrhenius and Logistic equations were further used to describe the phenomenological kinetics. Different data-processing methods were compared to fit the severity parameters and model constants. Both Arrhenius-based and Logistic-based models show satisfying fitting results, though the values of Arrhenius-based CSFext (A-CSFext) and Logistic-based CSFext (L-CSFext) were somewhat different under the same fractionation condition. The solubilization of biomass components increased with CSFext, but two distinct stages could be observed with inflection points at A-CSFext of 42 or L-CSFext of 43, corresponding to bulk and residual solubilization stages, respectively. For the enzymatic hydrolysis of cellulosic solids, the highest initial enzymatic glucan conversion (EGC@6h) was obtained at A-CSFext of 39–40 or A-CSFext of 40–41; however, for a long hydrolysis period (72 h), relatively high glucan conversion (EGC@72h) was observed at A-CSFext of 42–43 or A-CSFext of 43–44. Post-treatment for deformylation with a small amount of lime could help to recover the cellulose digestibility.Funding Information
- National Natural Science Foundation of China (21808123, 21868008 and 21878176)
This publication has 31 references indexed in Scilit:
- Kinetic Modeling and Mechanisms of Acid-Catalyzed Delignification of Sugarcane Bagasse by Aqueous Acetic AcidBioEnergy Research, 2012
- Biomass recalcitrance. Part II: Fundamentals of different pre‐treatments to increase the enzymatic digestibility of lignocelluloseBiofuels, Bioproducts and Biorefining, 2012
- Evaluation and optimization of organosolv pretreatment using combined severity factors and response surface methodologyBiomass and Bioenergy, 2011
- Switchgrass pretreatment and hydrolysis using low concentrations of formic acidJournal of Chemical Technology & Biotechnology, 2011
- Formic Acid as a Potential Pretreatment Agent for the Conversion of Sugarcane Bagasse to BioethanolApplied Biochemistry and Biotechnology, 2010
- Biomass Recalcitrance: Engineering Plants and Enzymes for Biofuels ProductionScience, 2007
- Phenomenological kinetics of complex systems: the development of a generalized severity parameter and its application to lignocellulosics fractionationChemical Engineering Science, 1992
- Pretreatment-Catalyst effects and the combined severity parameterApplied Biochemistry and Biotechnology, 1990
- Fractionation of lignocellulosics by steam-aqueous pretreatmentsPhilosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1987
- Biorefining of biomass to liquid fuels and organic chemicalsEnzyme and Microbial Technology, 1981