公开(公告)号：US20230323407A1

公开(公告)日：2023-10-12

申请号：US18018713

申请日：2021-07-30

Applicant: SUEZ GROUPE

Inventor： Benjamin PERCHERON

IPC: C12P7/10 ,  C12P19/02

CPC classification number: C12P7/10 ,  C12P19/02 ,  C12P2201/00 ,  C12P2203/00 ,  C12R2001/865

Abstract: The invention relates to a method for producing a sugar syrup comprising fermentable sugars from lignocellulosic biomass containing paper waste, in particular printable paper, printed paper or cardboard, said method comprising the following steps: a. optionally, a step of shredding said lignocellulosic biomass containing paper waste; b.i. a step of impregnating said lignocellulosic biomass containing paper waste or shredded lignocellulosic biomass obtained on completion of step a. in an aqueous medium, and ii. a thermal pretreatment step implemented, without the addition of acid, at a temperature of between 80° C. and 150° C., at a pH between 6.5 and 8.5, in particular between 6.5 and 8, in order to obtain a pretreated product, said impregnation and thermal pretreatment steps being carried out simultaneously or successively according to i. and then ii; c. a step of enzymatic hydrolysis of the pretreated product obtained on completion of step b. in order to convert the cellulose and hemicellulose into a sugar syrup comprising fermentable sugars; and d. a step of recovering the sugar syrup comprising fermentable sugars obtained on completion of step c.