Arundo donax refining to second generation bioethanol and furfural
| Autor: | Federico Liuzzi, Isabella De Bari, Alfredo Ambrico, Mario Trupo |
|---|---|
| Přispěvatelé: | De Bari, I., Liuzzi, F., Ambrico, A., Trupo, M. |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
020209 energy
Biomass Bioengineering Bioethanol 02 engineering and technology Xylose Furfural lcsh:Chemical technology 01 natural sciences lcsh:Chemistry chemistry.chemical_compound 0202 electrical engineering electronic engineering information engineering Chemical Engineering (miscellaneous) Hybrid SSF Hemicellulose lcsh:TP1-1185 Biorefining Xylose dehydration Steam explosion 010405 organic chemistry Process Chemistry and Technology food and beverages Pulp and paper industry Lignocellulosic 0104 chemical sciences chemistry lcsh:QD1-999 Biofuel High gravity Fermentation |
| Zdroj: | Processes Volume 8 Issue 12 Processes, Vol 8, Iss 1591, p 1591 (2020) |
| Popis: | Biomass-derived sugars are platform molecules that can be converted into a variety of final products. Non-food, lignocellulosic feedstocks, such as agroforest residues and low inputs, high yield crops, are attractive bioresources for the production of second-generation sugars. Biorefining schemes based on the use of versatile technologies that operate at mild conditions contribute to the sustainability of the bio-based products. The present work describes the conversion of giant reed (Arundo donax), a non-food crop, to ethanol and furfural (FA). A sulphuric-acid-catalyzed steam explosion was used for the biomass pretreatment and fractionation. A hybrid process was optimized for the hydrolysis and fermentation (HSSF) of C6 sugars at high gravity conditions consisting of a biomass pre-liquefaction followed by simultaneous saccharification and fermentation with a step-wise temperature program and multiple inoculations. Hemicellulose derived xylose was dehydrated to furfural on the solid acid catalyst in biphasic media irradiated by microwave energy. The results indicate that the optimized HSSF process produced ethanol titers in the range 43&ndash 51 g/L depending on the enzymatic dosage, about 13&ndash 21 g/L higher than unoptimized conditions. An optimal liquefaction time before saccharification and fermentation tests (SSF) was 10 h by using 34 filter paper unit (FPU)/g glucan of Cellic® CTec3. C5 streams yielded 33.5% FA of the theoretical value after 10 min of microwave heating at 157 ° C and a catalyst concentration of 14 meq per g of xylose. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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