PEMBUATAN PULP DARI LIMBAH JERAMI PADI DARI KELURAHAN KRAPYAK-SEMARANG MENGGUNAKAN PROSES SODA DENGAN ALAT DIGESTER (The Manufacture of Pulp from Waste Rice Straw from Krapyak Village-Semarang Using a Soda Process with Digester Instrument)

Abstract

Raw materials used in the study was the waste rice straw. Waste rice straw is an alternative raw material that can be used in the manufacture of pulp for high cellulose content. The test results of research analyzes the pulps made from rice straw by the process acquired soda 62% yield, 69.5% moisture content, ash content of 32.5%, and α cellulose content of 22.67% in the first variable to 100°C for 100 minutes and the second variable with a temperature of 120°C for 100 minutes to produce an analysis% yield of 66%, 58% moisture content, ash content of 26%, and levels of cellulose  37.67%. Based on the test results of the analysis, the results obtained pulp of the highest quality that is the second variable with a temperature of 120°C for 100 minutes to produce an analysis% yield of 66%, 58% moisture content, ash content of 26%, and levels of cellulose  37.67%. Differences variables change of temperature when cooking is very influential on the outcome of the study. The difference this variable serves to be able to determine optimum operating conditions for good pulping process.