Main-hydrolysis of White Birch Chips Wetted with Sulfuric Acid Solution of Medium Strength Using a Through Drying Operation

The purpose of this study is to find the relation between the saccharification ratio and the mixing ratio in a new wood saccharification process with strong sulfuric acid by employing a through drying operation. The saccharification yield in the main-hydrolysis of white birch chips with a sulfuric acid solution of a medium strength is expressed by the following empirical equations according to respective kind of samples of white birch chips used. With mixing ratio R ranging from 0.4 to 1.0.

when raw white birch chips (0.1°10°10 mm) are used and

when pre-hydrolyzed white birch chips (1.5×3.5~4.5×10~15 mm) are used.