Fig. 3From: Totally chlorine-free bleaching of prehydrolysis soda pulp from plantation hardwoods consisting of various lignin structuresEffect of prehydrolysis time on furfural production (prehydrolysis conditions: 1.5–3.0 h and 150 °C; dehydration conditions: 6% sulfuric acid concentration, at 98 °C for 1 h)Back to article page