Analysis of Primary Reactions in Biomass Oxidation with O₂ in Hot-Compressed Alkaline Water.

ABSTRACT: The present study investigated oxidation of pulverized Japanese cedar with O₂ in hot-compressed alkaline water, employing a newly developed flow-through fixed-bed reactor (percolator). It allowed us to determine the rate of the primary extraction that was free from the secondary reactions of extract in the aqueous phase and those over the residual solid, solubility of extractable matter, and mass transport processes. Quantitative kinetic analysis revealed that the cedar consisted of three kinetic components (C1-C3) that underwent extraction in parallel following first-order kinetics with different rate constants. Further analysis revealed the chemical compositions of the kinetic components, which were mixtures of carbohydrates and lignin. C1 was converted most rapidly by nonoxid

SUBMITTER: Wang JX 

PROVIDER: S-EPMC7906591 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature