Ethanol production from residual lignocellulosic fibers generated through the steam treatment of whole sorghum biomass

Boboescu Iulian-Zoltan, Damay Jérémie, Kong Win Chang James, Beigbeder Jean-Baptiste, Duret Xavier, Beauchemin Sophie, Lalonde Olivier, Lavoie Jean-Michel. 2019. Ethanol production from residual lignocellulosic fibers generated through the steam treatment of whole sorghum biomass. Bioresource Technology, 292:121975, 10 p.

Quartile : Outlier, Sujet : AGRICULTURAL ENGINEERING / Quartile : Outlier, Sujet : BIOTECHNOLOGY & APPLIED MICROBIOLOGY / Quartile : Q1, Sujet : ENERGY & FUELS

Résumé : 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.

Mots-clés Agrovoc : délignification, hydrolyse, bagasse, éthanol, biomasse, lignocellulose, produit cellulosique, sorgho sucre, générateur de vapeur

Mots-clés libres : Whole sweet sorghum, Delignification, Cellulose hydrolysis, Steam explosion, Lignocellulosic ethanol

Auteurs et affiliations

• Boboescu Iulian-Zoltan, Université de Sherbrooke (CAN)
• Damay Jérémie, Université de Sherbrooke (CAN)
• Kong Win Chang James, Université de Sherbrooke (CAN)
• Beigbeder Jean-Baptiste, Université de Sherbrooke (CAN)
• Duret Xavier, Université de Sherbrooke (CAN)
• Beauchemin Sophie, Université de Sherbrooke (CAN)
• Lalonde Olivier
• Lavoie Jean-Michel, Université de Sherbrooke (CAN)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/609998/)

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