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Novel micronized woody biomass process for production of cost-effective clean fermentable sugarsAuthor(s): Yu Fu; Bon-Jae Gu; Jinwu Wang; Johnway Gao; Girish M. Ganjyal; Michael P. Wolcott
Source: Bioresource Technology. 260: 311-320.
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
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DescriptionThermo-chemical pretreatments of biomass typically result in environmental impacts from water use and emission. The degradation byproducts in the resulting sugars can be inhibitory to the activities of enzymes and yeasts. The results of this study showed that combining existing commercial comminution technology can reduce total energy consumption with improved saccharification yield while eliminating chemical use. Impact mill was found to be the most efficient milling for size reduction of forest residual chips from ca. 2mm to a specific value below 100 μm. The further micronization effectively disrupted the recalcitrance of the woody biomass and produced the highly saccharifiable substrates for downstream processing. In addition, extrusion can be integrated into a clean cellulosic sugar process for further fibrillation in place of the conventional mixing processing. The highest energy efficiency was observed on the impact-milled samples with 0.515 kg sugars kWh−1.
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CitationFu, Yu; Gu, Bon-Jae; Wang, Jinwu; Gao, Johnway; Ganjyal, Girish M.; Wolcott, Michael P. 2018. Novel micronized woody biomass process for production of cost-effective clean fermentable sugars. Bioresource Technology. 260: 311-320.
KeywordsMechanical pretreatment, milling, sugar yield, specific energy consumption, enzymatic saccharification
- Specific surface to evaluate the efficiencies of milling and pretreatment of wood for enzymatic saccharification
- Pretreatment of woody biomass for biofuel production: energy efficiency, technologies, and recalcitrance
- Evaluation of physical structural features on influencing enzymatic hydrolysis efficiency of micronized wood
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