Ethanol production from residual lignocellulosic fibers generated through the steam treatment of whole sorghum biomass
Cellulosic ethanol could play a major role in the upcoming circular-economy once the process complexity, low carbohydrate extraction yields and high costs are resolved. To this purpose, different steam-treatment severity factors were employed on whole sweet sorghum biomass, followed by the delignification and hydrolysis of resulted lignocellulose fibers. A modified ASTM International (American Society for Testing and Material) standard cellulose hydrolysis approach as well as a newly developed SACH (Sulfuric Acid Cellulose Hydrolysis) process were used, recovering up to 24.3 wt% of cellulosic carbohydrates. This amounted to a total extractable and constitutive carbohydrate recovery of 51.7 wt% (dry basis) when a mild steam-treatment of whole sorghum biomass and the SACH cellulose hydrolysis were employed. An ethanol potential of 6378 L/ha/year was determined, comparable to values obtained from biomass such as sugarcane in warmer climates, supporting thus the opportunity of implementing this novel approach on a wider scale.
| Main Authors: | , , , , , , , |
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| Format: | article biblioteca |
| Language: | eng |
| Subjects: | délignification, hydrolyse, bagasse, éthanol, biomasse, lignocellulose, produit cellulosique, sorgho sucre, générateur de vapeur, http://aims.fao.org/aos/agrovoc/c_24014, http://aims.fao.org/aos/agrovoc/c_24940, http://aims.fao.org/aos/agrovoc/c_776, http://aims.fao.org/aos/agrovoc/c_10677, http://aims.fao.org/aos/agrovoc/c_926, http://aims.fao.org/aos/agrovoc/c_24868, http://aims.fao.org/aos/agrovoc/c_1422, http://aims.fao.org/aos/agrovoc/c_92e4fd40, http://aims.fao.org/aos/agrovoc/c_25731, |
| Online Access: | http://agritrop.cirad.fr/609998/ http://agritrop.cirad.fr/609998/1/2%20Ethanol%20production%20from%20residual%20lignocellulosic%20fibers%20generated%20through%20the%20steam%20treatment%20of%20whole%20sorghum%20biomass_2019.pdf |
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