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Organic Acid Pulping Of Rice Straw. I: Cooking, M. Sarwar Jahan, Z. Z. Lee, Yongcan Jin
Organic Acid Pulping Of Rice Straw. I: Cooking, M. Sarwar Jahan, Z. Z. Lee, Yongcan Jin
Turkish Journal of Agriculture and Forestry
Acetic acid or formic acid treatment of rice straw with the variation of reaction variables, namely acid concentration, catalyst (HCl or H_2SO_4) concentration, reaction time, temperature and liquor ratio, was investigated to ascertain effects on the dissolution of hemicellulose, which facilitates the dissolution of lignin during alkaline extraction or peroxyacid treatment and improved the drainability of straw pulp. Maximum pentosan dissolution was observed in 80% acetic acid with 0.6% H_2SO_4 catalyst at 80 °C for 120 min. Acetic acid dissolved pentosan more slowly than formic acid. The catalytic activity of H_2SO_4 was higher than that of HCl with respect to …