Fig. 2From: Catalytic valorization of hardwood for enhanced xylose-hydrolysate recovery and cellulose enzymatic efficiency via synergistic effect of Fe3+ and acetic acidProcess optimization of sugar release after Fe3+-assisted HAc pretreatment. a Effects of Fe3+ concentration on the fate of hemicellulose in aqueous HAc media pretreated at 170 °C for 27 min. b pH variations as a function of added Fe3+ concentrations in the presence of HAc prior to and immediately after the pretreatmentBack to article page