Rapid one-step solvent-free acid-catalyzed mechanical depolymerization of pine sawdust to high-yield water-soluble sugars
| Autor: | Mari Jaakkola, Jasmiina Haverinen, Ulla Lassi, Jean-Marc Lévêque, Jana Holm, Tero Tuuttila, Yue Dong |
|---|---|
| Přispěvatelé: | Microsoft Research Asia, Laboratoire de Chimie Moléculaire et Environnement (LCME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]) |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
hydrolyysi
sokerit mänty biomassa 020209 energy lignin condensation lignin 02 engineering and technology chemistry.chemical_compound Hydrolysis Acid-catalyzed mechanical depolymerization [CHIM.ANAL]Chemical Sciences/Analytical chemistry acid-catalyzed mechanical depolymerization 0202 electrical engineering electronic engineering information engineering Lignin Monosaccharide Organic chemistry chromophores Sugar Waste Management and Disposal ta215 ta218 ComputingMilieux_MISCELLANEOUS chemistry.chemical_classification biomass Renewable Energy Sustainability and the Environment Depolymerization ligniini Forestry Pinus sylvestris Lignin condensation Chromophores Reducing sugar Solvent sawdust chemistry hydrolysis sugars Yield (chemistry) [SDE]Environmental Sciences Pine (Pinus sylvestris) sawdust Agronomy and Crop Science Nuclear chemistry pine |
| Zdroj: | Biomass and Bioenergy Biomass and Bioenergy, Elsevier, 2017, 102, pp.23-30. ⟨10.1016/j.biombioe.2017.03.026⟩ |
| ISSN: | 0961-9534 1873-2909 |
| DOI: | 10.1016/j.biombioe.2017.03.026⟩ |
| Popis: | One-step absolute solvent-free acid-catalyzed mechanical depolymerization of pine sawdust (PSD) and commercially available α-cellulose to water-soluble sugars was carried out using ball milling. For comparison purposes, the commonly reported “solvent-free” mechanocatalytic depolymerization of lignocellulose method, which normally involves three steps (acid impregnation in solvent, vacuum drying, and mechanical depolymerization of lignocellulose), was performed. The 3,5-dinitrosalicylic acid (DNS) method was used to measure the total reducing sugar (TRS) of the obtained sugar solution, and major monosaccharides in the solution were analyzed by capillary electrophoresis (CE). More than 90% of the PSD became water-soluble through milling. Furthermore, most of the PSD was converted into TRS in approximately 30 min, and the highest TRS yield obtained was 31%, based on the dry mass. Interestingly, the TRS solutions obtained from the processed PSD were much darker than those obtained from α-cellulose due to the chromophores that formed during the depolymerization of lignin. |
| Databáze: | OpenAIRE |
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