Campus Units

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

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

7-2020

Journal or Book Title

Biomass and Bioenergy

Volume

138

First Page

105579

DOI

10.1016/j.biombioe.2020.105579

Abstract

The goal of this research is to develop a partial delignification process for corn stover that simultaneously improves accessibility of enzymes to cellulose and recovers hydroxycinnamic acids (HCA) as a value-added product from the lignin. We recover HCAs from corn stover with a mild base extraction employing sodium hydroxide, ethanol, and water. The total HCA yield was 33.5 wt% on a lignin basis and approximately 6 wt% on a corn stover basis. This partial delignification pretreatment allowed 85 wt% of total available glucose to be recovered by enzymatic hydrolysis using an enzyme loading that is only 10% of the level recommended for recovering sugars from lignocellulosic biomass. Technoeconomic analysis indicates that recovery of HCAs could reduce the selling price of ethanol by $0.26 L-1. That part of the lignin not removed as HCA becomes a co-product of enzymatic hydrolysis suitable for thermochemical processing into additional biofuels and/or chemicals.

Comments

This is a manuscript of an article published as Johnston, Patrick A., Haoqin Zhou, Alvina Aui, Mark Mba Wright, Zhiyou Wen, and Robert C. Brown. "A lignin-first strategy to recover hydroxycinnamic acids and improve cellulosic ethanol production from corn stover." Biomass and Bioenergy 138 (2020): 105579. DOI: 10.1016/j.biombioe.2020.105579. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier Ltd.

Language

en

File Format

application/pdf

2020-BrownRobert-LigninFirst-SI.pdf (83 kB)
Supporting Information

Available for download on Friday, May 06, 2022

Published Version

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