Reaction kinetics of the hydrothermal treatment of lignin

Applied Biochemistry and Biotechnology
Bo ZhangShri Ramaswamy

Abstract

Lignins derived from abundant and renewable resources are nontoxic and extremely versatile in performance, qualities that have made them increasingly important in many industrial applications. We have shown recently that liquefaction of lignin extracted from aspen wood resulted in a 90% yield of liquid. In this paper, the hydrothermal treatment of five types of lignin and biomass residues was studied: Kraft pine lignin provided by MeadWestvaco, Kraft pine lignin from Sigma-Aldrich, organosolv lignin extracted from oat hull, the residues of mixed southern hardwoods, and switchgrass after hydrolysis. The yields were found dependent on the composition or structure of the raw materials, which may result from different pretreatment processes. We propose a kinetic model to describe the hydrothermal treatment of Kraft pine lignin and compare it with another model from the literature. The kinetic parameters of the presented model were estimated, including the reaction constants, the pre-exponential factor, and the activation energy of the Arrhenius equations. Results show that the presented model is well in agreement with the experiments.

Citations

Dec 4, 2012·International Journal of Molecular Sciences·Sumin KangRuncang Sun
May 9, 2013·Bioresource Technology·M Toufiq RezaVictor R Vásquez
Apr 16, 2016·Applied Biochemistry and Biotechnology·Amirreza TahaeiMajid Shams
Oct 5, 2017·International Journal of Molecular Sciences·Qi WangDekui Shen
Jun 7, 2013·Applied Biochemistry and Biotechnology·Hairong ZhangXinde Chen
Nov 2, 2017·Environmental Science and Pollution Research International·Asma JederVanessa Fierro
Nov 27, 2018·Applied Microbiology and Biotechnology·Judit SandquistGonzalo Del Alamo Serrano

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