Campus Units

Chemical and Biological Engineering, Food Science and Human Nutrition, Mechanical Engineering, Bioeconomy Institute (BEI)

Document Type

Article

Research Focus Area

Renewable Energy

Publication Version

Published Version

Publication Date

10-10-2016

Journal or Book Title

Energies

Volume

9

Issue

10

First Page

808

DOI

10.3390/en9100808

Abstract

Lignin is a substantial component of lignocellulosic biomass but is under-utilized relative to the cellulose and hemicellulose components. Historically, lignin has been burned as a source of process heat, but this heat is usually in excess of the process energy demands. Current models indicate that development of an economically competitive biorefinery system requires adding value to lignin beyond process heat. This addition of value, also known as lignin valorization, requires economically viable processes for separating the lignin from the other biomass components, depolymerizing the lignin into monomeric subunits, and then upgrading these monomers to a value-added product. The fact that lignin’s biological role is to provide biomass with structural integrity means that this heteropolymer can be difficult to depolymerize. However, there are chemical and biological routes to upgrade lignin from its native form to compounds of industrial value. Here we review the historical background and current technology of (thermo) chemical depolymerization of lignin; the natural ability of microbial enzymes and pathways to utilize lignin, the current prospecting work to find novel microbial routes to lignin degradation, and some applications of these microbial enzymes and pathways; and the current chemical and biological technologies to upgrade lignin-derived monomers.

Comments

This article is published as Davis, Kirsten M., Marjorie Rover, Robert C. Brown, Xianglan Bai, Zhiyou Wen, and Laura R. Jarboe. "Recovery and utilization of lignin monomers as part of the biorefinery approach." Energies 9, no. 10 (2016): 808. 10.3390/en9100808. Posted with permission.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Copyright Owner

The Authors

Language

en

File Format

application/pdf

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