6533b861fe1ef96bd12c5740
RESEARCH PRODUCT
Pretreatment and fractionation of lignocellulosic barley straw by mechanocatalysis
Laura SchneiderLaura SchneiderMari JaakkolaUlla LassiUlla LassiJasmiina Haverinensubject
chemistry.chemical_classificationChromatographyWaste managementChemistry020209 energyGeneral Chemical Engineeringfood and beveragesSulfuric acid02 engineering and technologyGeneral ChemistryFractionationXyloseStraw021001 nanoscience & nanotechnologyIndustrial and Manufacturing EngineeringCatalysisReducing sugarHydrolysischemistry.chemical_compound0202 electrical engineering electronic engineering information engineeringEnvironmental ChemistryAcid hydrolysis0210 nano-technologydescription
Abstract This study focuses on the mechanocatalytical process combining dilute acid pretreatment and mechanical processing driven by ball milling. Milled and hydrolyzed barley straw samples are subject to reducing sugar analysis by DNS assay and capillary electrophoresis. Optimization of the saccharification conditions was carried out with two different sulfuric acid concentrations, 0.5 mol kg −1 and 1.0 mol kg −1 , and compared. A significant yield of total reducing sugar (53.4%) was obtained from barley straw impregnated with sulfuric acid (1.0 mol kg −1 ) after milling for only 20 min. Glucose and xylose concentrations accounted for 3.5% and 11.3%, respectively. Strikingly, the present study indicates a significant impact of the internal milling vessel temperature in the mechanocatalytical conversion process of barley straw in addition to the mechanical parameters and the catalyst concentration.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-11-01 | Chemical Engineering Journal |