PENGARUH RASIO CAIRAN PEMASAK (AA CHARGE) PADA PROSES PEMBUATAN PULP DARI KAYU SENGON (ALBIZIA FALCATARIA) TERHADAP KUALITAS PULP

Abstract

Sengon wood (Albizia falcataria) is chosen as an alternative raw material for the manufacture of pulp has physical and chemical characteristic that meet the standards of raw material for pulp. The most important factors that influence the process of the kraft pulping is the ratio of the cooking liquid (AA charge) which serves to degrade and dissolve so easy to separate lignin from cellulose, while still protecting carbohydrates from degradation so that the resulting yield and good physical strengt. The study began with the preparation of raw materials, cooking by using a variable charge AA 14%, 16%, 18%, 20% and 22%, pulp washing and sheet formation, as well as the analysis of the quality of the pulp. Cooking liquid ratio will affect the yield and quality of pulp, including kappa number, viscosity and brightness. The low use of cooking liquid causes the higher lignin content in pulp and produce wood that is not mature, so the higher the yield, kappa number and viscosity, but lower brightness. While conversely, the higher the cooking liquid use causes more fiber degraded.