Simultaneous Pretreatment with Ultraviolet Light and Alkaline H2O2 to Promote Enzymatic Hydrolysis of Corn Stover

Jianjun Hu; Zhi He; Quanguo Zhang; Jiatao Dang; Shuheng Zhao; Shaoqi Yang; Panbo Yang; Xiaoyu Yan

BioResources (Jun 2023)

Simultaneous Pretreatment with Ultraviolet Light and Alkaline H2O2 to Promote Enzymatic Hydrolysis of Corn Stover

Jianjun Hu,
Zhi He,
Quanguo Zhang,
Jiatao Dang,
Shuheng Zhao,
Shaoqi Yang,
Panbo Yang,
Xiaoyu Yan

Affiliations

Jianjun Hu: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical engineering, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
Zhi He: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical engineering, Henan Agricultural University, Zhengzhou 450002, China
Quanguo Zhang: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical engineering, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
Jiatao Dang: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical engineering, Henan Agricultural University, Zhengzhou 450002, China; Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
Shuheng Zhao: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical engineering, Henan Agricultural University, Zhengzhou 450002, China; b: Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
Shaoqi Yang: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical engineering, Henan Agricultural University, Zhengzhou 450002, China; b: Collaborative Innovation Center of Biomass Energy, Henan Province, Zhengzhou 450002, China
Panbo Yang: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical engineering, Henan Agricultural University, Zhengzhou 450002, China
Xiaoyu Yan: Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical engineering, Henan Agricultural University, Zhengzhou 450002, China

Journal volume & issue: Vol. 18, no. 3
pp. 4754 – 4770

Abstract

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Pretreatment processes are essential for the preparation of biofuels from lignocellulosic feedstocks. Based on alkaline H2O2 pretreatment, photocatalytic alkaline H2O2 pretreatment (U-AHP) was investigated to examine the effects of reaction time, alkali concentration, and H2O2 concentration on the enzymatic digestion of corn stover. The optimum process conditions were determined by orthogonal tests: 1% NaOH, 2% H2O2, and reaction time of 8 h. Under these conditions, the lignin removal efficiency of UH-AHP was 90.2% and the saccharification yield was 94.7%. Furthermore, FT-IR, XRD, and SEM analyses showed that U-AHP pretreatment caused structural damage to the maize straw and increased the crystallinity of the cellulose, and it was speculated that the U-AHP pretreatment reaction was a complex mechanism, which might be a multiple synergistic reaction. This study shows that U-AHP pretreatment is a simple, green and effective method to promote lignin removal.

Published in BioResources

ISSN: 1930-2126 (Online)
Publisher: North Carolina State University
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Biotechnology
Website: https://bioresources.cnr.ncsu.edu/

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