Combined oxidization and liquid ammonia pretreatment of bamboo of various ages and species for maximizing fermentable sugar release. (January 2022)

• Record Type: Journal Article
• Authors: Lu, Jiajun; Cheng, Mingyang; Zhao, Chao; Shao, Qianjun; Hassan, Muhammad
• Is Part Of: Bioresource technology. Volume 343(2022)
• Publication Date: 2022-01
• Subjects: Bamboo age -- Bamboo species -- Oxidization -- Liquid ammonia -- Fermentable sugar; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2021.126085
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: The H2 O2 loading of 1.0 was the optimal oxidant dosage for the OD-LAT pretreatment. Bamboo age and species significantly affected pretreatment and enzymatic hydrolysis. The composition of bamboo tended to be stable after three years old. The maximum glucan and xylan conversion of OD-LAT-treated B-NA were 83.85% and 78.66%. The fermentable sugar was 5–8 fold after OD-LAT process compared with UT sample. Abstract: To determine the potential for improving biomass enzymolysis, a combined oxidization and liquid ammonia pretreatment (OD-LAT) was employed for bamboo. The effects of oxidant, bamboo ages, and species on the pretreatment effectiveness and subsequent enzymolysis were studied. Under the optimal OD-LAT pretreatment and enzymolysis of the B-NA bamboo Neosinocalamus affinis, the glucan and xylan conversion reached 83.85% and 78.66%, respectively, and approximately 59.7–68.5 g of fermentable sugars can be produced per 100 g of dry bamboo, which was an approximately 5–8 fold increase compared with untreated sample. The H2 O2 loading of 1.0 was the optimal oxidant dosage for the OD-LAT process. The OD-LAT pretreatment was only suitable for bamboo under three-year-old, and it significantly improved the enzymolysis of B-NA and B-BM, while it was limited to B-DO and B-PP. The pretreatment effects of bamboo were not only related to composition but also to the bamboo age, species, macro-structures and micro-structures.