Non-pressurised pre-treatment, enzymatic hydrolysis and...

C - Chemistry – Metallurgy – 12 – M

Patent

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Details

C12M 1/10 (2006.01) B09B 3/00 (2006.01) C12N 1/22 (2006.01) C12P 7/10 (2006.01)

Patent

CA 2624187

The present invention relates to a process for production of fermentation products, including bioethanol by non-prassurised pre-treatment, enzymatic hydrolysis and fermentation of waste fractions containing mono- and/or polysaccharides, having a relatively high dry matter content. The process in its entirety, i.e. from non-pressurised pre-treatment over enzymatic hydrolysis and fermentation to sorting of fermentable and non-fermentable solids can be processed at a relatively high dry matter content in a single vessel or similar device using free fall mixing for the mechanical processing of the waste fraction.

La présente invention concerne un procédé permettant de produire des produits de prétraitement, y compris du bioéthanol par traitement sans pressurisation, hydrolyse enzymatique et fermentation de fragments de déchets contenant des mono- et/ou des polysaccharides, présentant une teneur en matière sèche relativement élevée. Le procédé dans son ensemble, depuis le prétraitement sans pressurisation en passant par l'hydrolyse enzymatique et la fermentation, jusqu'au triage des solides susceptibles de fermentation et ceux qui ne sont pas susceptibles de fermentation, peut être réalisé avec une teneur en matière sèche relativement élevée dans un seul récipient ou tout autre dispositif similaire au moyen du malaxage par chute libre pour le traitement mécanique des fragments de déchets.

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