Electron beam and steam explosion pretreatments of biomass for production in a low energy biorefinery

Various combinations of pretreatment techniques and reaction conditions were evaluated to produce biomass with high enzyme reactivity. Pretreatment methods such as electron beam irradiation (EB), steam explosion (SE) were used alone or by combination with sequential steps of electron beam irradiatio...

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Bibliographische Detailangaben
Hauptverfasser:	Horn, Svein Jarle, Chappas, Walter J, Aizpurua, Carlos E, Haugstvedt, Martin, Leskinen, Timo, Kelley, Stephen S
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CRACKING HYDROCARBON OILS FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT FUELS LUBRICANTS METALLURGY MINERAL WAXES PAPER-MAKING PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCTION OF CELLULOSE PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA REGENERATION OF PULPING LIQUORS TECHNICAL GASES CONTAINING CARBON MONOXIDE TEXTILES THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Various combinations of pretreatment techniques and reaction conditions were evaluated to produce biomass with high enzyme reactivity. Pretreatment methods such as electron beam irradiation (EB), steam explosion (SE) were used alone or by combination with sequential steps of electron beam irradiation and steam explosion. Acid catalyzed steam explosion (S02SE) was tested to improve treatment efficiency. In addition, an organic solvent extraction known as 'clean fractionation (CF)' was used to enhance the effectivenessof the pretreatment steps, and to recover extractives that could potentially provide value. The combination of techniques demonstrated to have synergistic effects that could improve fermentable sugar yield, and reduce formation of byproducts that are typically caused by use of severe treatment conditions. The combination of steam explosion and low dose radiation, make these findings an invention.