New dry technology of environmentally friendly biomass refinery: glucose yield and energy efficiency.

摘要: Background: Today, most of pretreatments used to convert biomass into biofuels are based on expensive chemical processes that not only do keep the major components intact after separation, but also consume water and generate many effluents. However, dry fractionation technologies an important step for future biorefineries since they require chemicals wastewater. Therefore, aim present study was evaluate feasibility using milling combined with electrostatic (ES) wheat straw (WS) as a way separate fractions enriched in cellulose more enzymatically accessible, from recalcitrant tissues lignin-hemicelluloses, order produce biofuels. Results: After milling, WS particles introduced tribo-electrostatic separator, where positively or negatively charged by tribo-electricity. Then separation cell comprising two electrodes (+ –). The negative electrode attracts positive particles. Results show amorphous rich were clearly abundant (F+), loose crystalline cellulose, lignin-xylan ash-containing material (F–). Indeed, (F+) accessible upon enzymatic hydrolysis, which resulted, example, sugars yield 43.5% glucose (254 gKg �1 )f F2B+compared 25.2% (103 -1) F2A–, 26.3% (130 ) unfractionated F0, respectively. Conclusions: combination strategy ES could improve economic low energy consumption (10.5 WhKg it produces reactive lignocelluloses different physicochemical