Effect of alkaline pretreatment on photo-fermentative hydrogen production from giant reed: Comparison of NaOH and Ca(OH)2

Danping Jiang; Xumeng Ge; Tian Zhang; Zhou Chen; Zhiping Zhang; Chao He; Quanguo Zhang; Yebo Li

doi:10.1016/j.biortech.2020.123001

Effect of alkaline pretreatment on photo-fermentative hydrogen production from giant reed: Comparison of NaOH and Ca(OH)₂

Bioresour Technol. 2020 May:304:123001. doi: 10.1016/j.biortech.2020.123001. Epub 2020 Feb 11.

Authors

Danping Jiang¹, Xumeng Ge², Tian Zhang³, Zhou Chen¹, Zhiping Zhang³, Chao He³, Quanguo Zhang⁴, Yebo Li²

Affiliations

¹ Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Agricultural Ministry, Collaborative Innovation Center of Biomass Energy, Henan Province, Henan Agricultural University, Zhengzhou 450002, China; Department of Food, Agricultural and Biological Engineering, The Ohio State University/Ohio Agricultural Research and Development Center, 1680 Madison Ave., Wooster, OH 44691 4096, United States.
² Quasar Energy Group, 2705 Selby Road, Wooster, OH 44691 4096, United States.
³ Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Agricultural Ministry, Collaborative Innovation Center of Biomass Energy, Henan Province, Henan Agricultural University, Zhengzhou 450002, China.
⁴ Key Laboratory of New Materials and Facilities for Rural Renewable Energy of Agricultural Ministry, Collaborative Innovation Center of Biomass Energy, Henan Province, Henan Agricultural University, Zhengzhou 450002, China. Electronic address: Zquanguo@163.com.

PMID: 32088626
DOI: 10.1016/j.biortech.2020.123001

Abstract

Giant reed was the first time used for photo-fermentative hydrogen production with HAU-M1 bacteria. Effects of NaOH and Ca(OH)₂ pretreatments of giant reed on structural changes, enzymatic digestibility, hydrogen production, and energy conversion efficiency were evaluated. Compared to Ca(OH)₂ pretreatment, NaOH pretreatment removed more dry matter and lignin at the same loading. The highest glucose yield (44.9%) of NaOH pretreatment was 1.74-fold higher than that of Ca(OH)₂ pretreatment. 20% NaOH pretreated giant reed biomass achieved the highest hydrogen yield (98.3 mL/g TS), which was 20% and 70% higher than the highest level of Ca(OH)₂ pretreated (20% Ca(OH)₂) and untreated giant reed, respectively. Only giant reed biomass pretreated with 20% NaOH resulted in a significant (p < 0.05) increase (25%) in energy conversion efficiency.

Keywords: Alkaline pretreatment; Energy conversion efficiency; Giant reed; Photo-fermentative hydrogen production.

MeSH terms

Biomass
Fermentation
Hydrogen*
Hydrolysis
Lignin*
Sodium Hydroxide

Substances

Sodium Hydroxide
Hydrogen
Lignin