Method for treating biomass and organic waste with the purpose of generating desired biologically based products
AssigneeCambi Bioethanol APS
InventorsBirgitte Kiær Ahring, Jens Munck
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Abstract
The present invention provides a method for treatment of lignocellulosic organic waste or biomass, by which the carbohydrates are rendered more available for subsequent hydrolysis, e.g. by means of addition of enzymes or direct fermentation to one or more desired products. The invention more specifically relates to a method comprising a combination of the following process steps: thermal hydrolysis, wet oxidation and wet explosion. The method according to the present invention can operate with undivided or only poorly divided substrate having a high dry matter concentration.
Claims13
Method for treatment of a material consisting of biomass or organic waste containing lignocellulosic material, wherein said material has particle/fiber sizes between 4 and 50 cm and:
- is subjected to thermal hydrolysis at a temperature above 140° C. maintained for 5-30 minutes followed by
- oxidation at a pressure of 15-35 bar and a temperature of 170-210° C. maintained for 1-30 minutes followed by
- wet explosion carried out by means of reducing the pressure from 5-35 bar to atmospheric pressure,
- with the aim of rendering carbohydrates of the material more available for a subsequent reaction by enzymatic hydrolysis and/or fermentation.
Dependencies are inferred from the claim text.