Short-time alkaline peroxide pretreatment for rapid pulping and efficient enzymatic hydrolysis of rice straw. (April 2017)

• Record Type: Journal Article
• Authors: Hideno, Akihiro
• Is Part Of: Bioresource technology. Volume 230(2017)
• Page Start: 140
• Page End: 142
• Publication Date: 2017-04
• Subjects: Short-time alkaline peroxide treatment -- Rapid pulping -- Rice straw -- Enzymatic hydrolysis -- Microfibrils; 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.2017.01.058
• Languages: English
• ISSNs: 0960-8524

Abstract

Highlights: Rapid pulping was achieved by short-time AP treatment of rice straw. High enzymatic digestibility was obtained from the short-time AP-treated rice straw. Microfibril networks and nano-scale pores were observed on the surface of AP-treated rice straw. Abstract: To improve utilization of agricultural residues in biorefineries, the effects of alkaline peroxide (AP) pretreatment on thermal degradation and enzymatic digestibility of rice straw were investigated. A high-cellulose (>70%) pulp with a width of a few micrometers was obtained by rapid (10 min) treatment with AP, without prior heating or other treatment. Moreover, enzymatic hydrolysis of the pulp produced a high glucose yield (approximately 80%). Microfibril networks were exposed, and many nano-scale pores that are easily penetrated by cellulases were observed on the surface of the AP-treated sample. For enzymatic hydrolysis of the pulp, increasing the dosage of cellulases was more effective for improving the glucose yield than addition of a grinding treatment. This AP treatment has the potential for on-site application because it is simple, highly efficient, and can be performed in a short time.