Method of treating biomass material

Details Method of treating biomass material Method of treating biomass material

1993-06-08

1994-11-22

Breneman, R. Bruce

Sugar, starch, and carbohydrates

Processes

Carbohydrate manufacture and refining

127 37, 162 25, 162 81, C13K 102, D21B 116, D21C 316

Patent

active

053665589

ABSTRACT:
Two stage hydrolysis of lignocellulosic material, conditions during the first stage being such as to hydrolyze or depolymerize the hemicellulosic component without substantial degradation of resulting monosaccharides, conditions during the second stage being such as to hydrolyze the cellulose to glucose without substantial degradation of the glucose. The solids left after first stage hydrolysis are disintegrated mechanically thereby greatly facilitating second stage hydrolysis. Hydrolysis in both stages is preferably accomplished by the use of nitric acid. The pH retention time and temperature in both stages are selected to maximize production of the desired monosaccharide or monosaccharides.

REFERENCES:
patent: 4706903 (1987-11-01), Brink et al.

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