Pre-treatment of corn stover, Cynara cardunculus L. stems and wheat straw by ethanol-water and diluted sulfuric acid: Comparison under different energy input conditions
| Autor: | Felix Garcia-Ochoa, Miguel Ladero, Priscilla Vergara, Juan C. Villar |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Environmental Engineering Cynara cardunculus L. stems 020209 energy Lignocellulosic biomass Cynara Bioengineering 02 engineering and technology Raw material Lignin Zea mays 01 natural sciences Hydrolysate chemistry.chemical_compound 010608 biotechnology 0202 electrical engineering electronic engineering information engineering Diluted sulfuric acid pre-treatment Biomass Corn stover Cellulose Waste Management and Disposal Triticum Ethanol biology Renewable Energy Sustainability and the Environment Chemistry Hydrolysis Water food and beverages Wheat straw General Medicine Sulfuric Acids Straw Biorefinery biology.organism_classification Pulp and paper industry Xylans Ethanol-water pre-treatment |
| Zdroj: | Repositorio de Resultados de Investigación del INIA INIA: Repositorio de Resultados de Investigación del INIA Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria INIA |
| ISSN: | 0960-8524 |
| DOI: | 10.1016/j.biortech.2018.09.058 |
| Popis: | Ethanol-water (EW) and diluted sulfuric acid (DSA) pre-treatment have been studied for lignocellulosic biomass (corn stover, Cynara cardunculus L. stems and wheat straw). Both pre-treatments have been compared taken into account: solids recovery, glucans recovery, xylans removed, delignification and glucose yield. In all cases, the amount of energy involved has been taken as a criterion for sustainability. In general terms, EW is more efficient to remove lignin and DSA more appropriate to hydrolysate xylans. The combined effect of delignification and xylans removal is responsible for the improvement in the enzymatic cellulose hydrolysis. Under conditions of moderate-low energy inputs, EW pre-treatment yields better results than DSA with glucose yields in the range of 50–60% for EW pre-treated corn stover and cardoon stems; while wheat straw pulps reach up to 80%. So, multiple raw materials biorefinery needs a previous study to fit the type and conditions of the pre-treatment to each feedstock. |
| Databáze: | OpenAIRE |
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