Proses Pembuatan Pulping dan Bleaching dari Ampas Tebu dengan Proses Soda Menggunakan Natrium Hidroksida (NaOH) Dengan Alat Digester (Pulping and Bleaching Process of Sugarcane Dregs By Soda Process Using Sodium Hydroxide ( NaOH ) With Digester Equipment)

Abstract

In designing this tool have dimensions digester include: tank diameter: 35 cm, height tank: 50 cm, plate thickness: 0.12 cm, Impeller diameter: 23.07 centimeters and stirrer speed: 2800 rpm to obtain a total volume of digester is 48 , 08 125 liters, if the volume of solution used was 80%, the volume was 38.465 liters. In lab testing digester design tool uses the raw material bagasse soda process using cooking time variables are: 90 minutes, and the temperature is: 1100C and 1000C and NaOH concentration of 20%. The test results include moisture content, ash content, levels of α cellulose in raw materials and pulp. Also the result of analysis on the pulp yield. At first variable using a temperature of 1000C with long cooking time of 90 minutes and the addition of NaOH with a concentration of 20% obtained water content of 32%, ash content of 30.5%, α cellulose content of 87% and a yield of 14.9%. The second variable using a temperature of 1100C with long cooking time of 90 minutes and the addition of NaOH with a concentration of 20% obtained water content of 31.5%, ash content of 36%, cellulose α levels of 96.3% and a yield of 15.72%. Factors - factors that affect the pulping process is temperature, cooking time and the concentration of ethanol used.