Hydrolysis of Wood During Sulfite Process Pulping

Hydrolysis of Wood During Sulfite Process Pulping 

The free sulfur dioxide in the sulfite pulping liquor promotes hydrolysis of the more easily hydrolyzable constituents of wood. A wood such as spruce, which contains 70.1% carbohydrate substances, of which 85.3% are potentially fermentable, gives a 50% yield of a pulp containing 97.7% carbohydrate, of which about 80% is fermentable. The 

Production op Alcohol prom Sulfite Waste Liquor 

Many plants have been constructed in Europe to utilize the sugars in sulfite liquor for the production of ethyl alcohol or food yeast. Some of these have been in commercial production 35 to 40 years, and have supplied alcohol for motor fuel and protein food for humans and animals. 

---

VIII. Hydrolysis of Wood During Sulfite Process Pulping... 

---