METHOD OF ENZYMATIC TREATMENT OF A SOLID LIGNOCELLULOSIC MATERIAL

摘要

A method of treating a solid lignocellulosic material (10) in which the solid lignocellulosic material (10) is subjected to a treatment, called a mechano-chemical treatment (1), of mixing and chemical degradation of the solid lignocellulosic material (10) so as to form an intermediate composition having a hydrated lignocellulosic material whose enzymatic digestibility is increased relative to the digestibility of the solid lignocellulosic starting material (10), then; the hydrated lignocellulosic material is subjected to a treatment, called a mechano-chemical treatment (2), in which a dispersion is formed, called an aqueous dispersion, of the hydrated lignocellulosic material (10) in an aqueous composition, the aqueous dispersion including at least one enzyme for degrading the hydrated lignocellulosic material (10).

主权项

1. A method of treatment of a solid lignocellulosic material (10) in which said solid lignocellulosic material (10) is subjected to a treatment, called mechano-chemical treatment (1), of kneading of said solid lignocellulosic material (10) and chemical degradation of said solid lignocellulosic material (10), in which the solid lignocellulosic material (10) is brought into contact with an alkaline solution in a manner such as to form an intermediate composition comprising a solid lignocellulosic material, called hydrated lignocellulosic material, having an enzymatic digestibility which is increased with respect to the digestibility of the starting solid lignocellulosic material (10); and thenthe hydrated lignocellulosic material is subjected to a treatment, called mechano-enzymatic treatment (2), in which a dispersion, called aqueous dispersion, of the hydrated lignocellulosic material (10) in an aqueous composition is formed, said aqueous dispersion comprising at least one enzyme for degradation of said hydrated lignocellulosic material; and the mechano-enzymatic treatment (2) is carried out by kneading said aqueous dispersion in a kneading reactor suitable for allowing a succession of mechanical phases of compression, expansion and shearing of the aqueous dispersion in a manner such as to form an aqueous solution, called hydrolysis solution, of hydrolysis products of said solid lignocellulosic material (10).