US 12,454,711 B2
Process for treating lignocellulosic biomass
Meriem Bouras, Rueil-Malmaison (FR); Caroline Aymard, Rueil-Malmaison (FR); and Mathieu Aragones, Rueil-Malmaison (FR)
Assigned to INSTITUT NATIONAL DE LA RECHERCHE POUR L'AGRICULTURE, L'ALIMENTATION ET L'ENVIRONNEMENT, Paris (FR); IFP Energies Nouvelles, Rueil-Malmaison (FR); and Agro Industries Recherche Et Developpement, Pomacle (FR)
Appl. No. 17/415,989
Filed by INSTITUT NATIONAL DE LA RECHERCHE POUR L'AGRICULTURE, L'ALIMENTATION ET L'ENVIRONNEMENT, Paris (FR); IFP Energies Nouvelles, Rueil-Malmaison (FR); and Agro Industries Recherche Et Developpement, Pomacle (FR)
PCT Filed Dec. 13, 2019, PCT No. PCT/EP2019/085108
§ 371(c)(1), (2) Date Jun. 18, 2021,
PCT Pub. No. WO2020/126917, PCT Pub. Date Jun. 25, 2020.
Claims priority of application No. 1873761 (FR), filed on Dec. 21, 2018.
Prior Publication US 2021/0381017 A1, Dec. 9, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C12P 19/14 (2006.01); C12P 19/02 (2006.01); D21B 1/02 (2006.01)
CPC C12P 19/14 (2013.01) [C12P 19/02 (2013.01); D21B 1/021 (2013.01); C12P 2201/00 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A process for treating lignocellulosic biomass, successively comprising:
a) providing a first biomass pretreated under acidic or neutral pH conditions, and providing a second biomass pretreated under acidic, neutral, or basic conditions,
b) pretreating the first biomass in a pretreatment reactor to produce an acidic or neutral pretreated must (AM),
alternating with
b′) pretreating the second biomass in the pretreatment reactor to produce a basic pretreated must (BM), wherein basic aqueous solution (EB) is optionally introduced into the pretreatment reactor, and
c) enzymatic hydrolysis in a hydrolysis reactor of a mixture of the acidic or neutral pretreated must (AM) obtained from b) with the basic pretreated must (BM) obtained from b′).