Effect of solvent mixture pretreatment on sugar release from short-rotation coppice Salix schwerinii for biobutanol production

Ming Yang; Xiaojun Guo; Guozhen Liu; Yufei Nan; Junhua Zhang; Hossain Noyazzesh; Suvi Kuittinen; Jouko Vepsäläinen; Ari Pappinen

doi:10.1016/j.biortech.2021.126262

Effect of solvent mixture pretreatment on sugar release from short-rotation coppice Salix schwerinii for biobutanol production

Bioresour Technol. 2022 Jan;344(Pt B):126262. doi: 10.1016/j.biortech.2021.126262. Epub 2021 Oct 30.

Authors

Ming Yang¹, Xiaojun Guo², Guozhen Liu³, Yufei Nan⁴, Junhua Zhang⁴, Hossain Noyazzesh⁵, Suvi Kuittinen⁵, Jouko Vepsäläinen⁶, Ari Pappinen⁵

Affiliations

¹ Engineering Research Center of Hebei for Agricultural Waste Resource Utilization, College of Life Sciences, Hebei Agricultural University, Baoding 071001, Hebei, China; Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding 071001, Hebei, China. Electronic address: shmym@hebau.edu.cn.
² Engineering Research Center of Hebei for Agricultural Waste Resource Utilization, College of Life Sciences, Hebei Agricultural University, Baoding 071001, Hebei, China.
³ Engineering Research Center of Hebei for Agricultural Waste Resource Utilization, College of Life Sciences, Hebei Agricultural University, Baoding 071001, Hebei, China; Hebei Key Laboratory of Plant Physiology and Molecular Pathology, College of Life Sciences, Hebei Agricultural University, Baoding 071001, Hebei, China.
⁴ College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, China.
⁵ School of Forest Sciences, University of Eastern Finland, P.O. Box 111, FI80101 Joensuu, Finland.
⁶ School of Pharmacy, University of Eastern Finland, P.O. Box 1627, FI70211 Kuopio, Finland.

PMID: 34728360
DOI: 10.1016/j.biortech.2021.126262

Abstract

This study investigated the effects of pretreatment using an acetone-butanol-ethanol (ABE) mixture with and without H₂SO₄ (H⁺) as a catalyst on sugar recovery from Salix schwerinii biomass. The sugar recovery was susceptible to both the temperature and the catalyst. Moreover, the relatively higher concentration of ABE (H⁺ABE4) at 200 °C yielded glucose recovery of 85.5% from the pretreated solid, higher than the recovery under other conditions. This result was mainly attributed to the compositional changes in the biomass, as the xylan and lignin were removed in large quantities by ABE pretreatment at 200 °C. Correspondingly, xylose recovery of 53.8% and glucose recovery of 12.1% were obtained from the liquid in which more sugar degradation products were formed. Ultimately, a fermentation broth containing a low concentration of ABE was successfully employed for pretreatment and showed great potential in producing fermentable sugars from S. schwerinii for biobutanol production.

Keywords: ABE (acetone–butanol–ethanol); Fermentation; Pretreatment; Salix schwerinii; Sugar release.

MeSH terms

Acetone*
Ethanol
Salix*
Solvents
Sugars

Substances

Solvents
Sugars
Acetone
Ethanol