Beta Renewables S.p.a.

Versalis S.p.a.

Francesco Cherchi

Simone Ferrero

Paolo Torre

Piero Ottonello

Alberto Riva

Danilo Defaveri

Dario Giordano

Stefano Paravisi

Marco Cotti Comettini

Mirko Garbero

Beatriz Rivas Torres

Andrea Bonanni

Luis Oriani

Federica Bosio

Daniele Riva

Liliane Tonte Rensi

Danilo De Faveri

Liliane Tonet Rensi

Elisa Raccagni

Chiara Giorcelli

Laura Volpati

The process for the hydrolysis of ligno-cellulosic biomass comprises the steps of

Process for the rapid hydrolysis of high solids biomass

Disclosed in this specification is a process for the improved hydrolysis of glucans to glucose wherein a portion of the glucose is removed from the process to improve the yield of glucose.

Sugar recovery method from ligno-cellulosic biomass

The process for the hydrolysis of ligno-cellulosic biomass comprises the steps of A) Contacting a ligno-cellulosic feedstock, the feedstock comprised of biomass having a dry content and water with at least a portion of a solvent, the solvent comprised of water soluble hydrolyzed species; wherein at least some of the water soluble hydrolyzed species are the same as the water soluble hydrolyzed species obtainable from the hydrolysis of the biomass in the feedstock;B) maintaining the contact between the feedstock of the feedstock stream and the solvent at a temperature in the range of 20&#xb0; C. to 200&#xb0; C. for a time in the range of 5 minutes to 72 hours to create a hydrolyzed product from the biomass in the feedstock.

This invention is to a biomass composition of 5 and 6 carbon sugars, lignin, and cellulose which has been steam exploded and the composition has a very high enzyme accessibility at 24 hours for hydrolysis.

Pre-treated biomass having enhanced enzyme accessibility

This specification discloses an improved method for conducting the removal of C5 xylan based sugars from biomass. The improved method involves a series of soakings and washings of the biomass as opposed to conducting one soaking and washing step.

Process for recovering sugars from a pretreatment stream of lignocellulosic biomass

The process for the treatment of ligno-cellulosic biomass comprises the steps of:

Biomass pretreatment process

An improved method of conducting the pre-soaking step involving pre-soaking the ligno-cellulosic biomass in a liquid (water) at a temperature in the range of between 100&#xb0; C. to 150&#xb0; C. prior to soaking at higher temperatures. This material can then be soaked and soaked liquid filtered by nano-filtration. When nano-filtration is used, the pre-soak temperature can be in the range of 10&#xb0; C. to 150&#xb0; C.

Pre-soaking process for biomass conversion

The process is for pretreating a lignocellulosic biomass feedstock and comprises: soaking a lignocellulosic biomass feedstock wherein the soaked biomass is present as a mixture with a free liquid and wherein the free liquid comprises at least one dissolved compound selected from the group consisting of glucose, xylose and respective oligomers thereof, washing the mixture of the soaked biomass and the free liquid, wherein at least a portion of the free liquid containing at least one dissolved compound selected from the group consisting of glucose, xylose and respective oligomers thereof is separated from the soaked biomass to create a soaked washed biomass and at least one free liquid stream, compressing the soaked biomass to create a released liquid, separating the released liquid from the soaked biomass, and keeping at least a portion of the released liquid separate from any free liquid.

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Novi Ligure, Italy

Francesco Cherchi