Corn stover was pretreated in a two phase system water/butanol acidified by oxalic acid. The purpose was to realize an efficient biomass fractionation and saccharification of the treated solid. The pretreatment was carried out in a 200 ml stirred autoclave at 140 °C and under pressure of CO2. After the treatment, the washed solid residue was hydrolyzed with enzymes. The analysis of the two liquid stream and solid residue pointed out that 1) Cellulose was quantitatively recovered as separate solid; 2) About two thirds of the xylan were recovered in the aqueous phase; 3) Most of lignin was solubilized and recovered in the organic phase; 4) The saccharification efficiency of the cellulose contained in the solid residue was complete. © 2017, ETA-Florence Renewable Energies. All rights reserved.
Efficient fractionation of corn stover by organosolv pretreatment and enzymatic hydrolysis of the obtained cellulosic residue
Valerio, V.;Gallo, V.;Viola, E.;Zimbardi, F.
2017-01-01
Abstract
Corn stover was pretreated in a two phase system water/butanol acidified by oxalic acid. The purpose was to realize an efficient biomass fractionation and saccharification of the treated solid. The pretreatment was carried out in a 200 ml stirred autoclave at 140 °C and under pressure of CO2. After the treatment, the washed solid residue was hydrolyzed with enzymes. The analysis of the two liquid stream and solid residue pointed out that 1) Cellulose was quantitatively recovered as separate solid; 2) About two thirds of the xylan were recovered in the aqueous phase; 3) Most of lignin was solubilized and recovered in the organic phase; 4) The saccharification efficiency of the cellulose contained in the solid residue was complete. © 2017, ETA-Florence Renewable Energies. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
