Edi, Mulyadi and Mu'tasim , Billah and Novel, Karaman (2009) PROSES PRODUKSI BIOETANOL BERBASIS SINGKONG. In: Seminar nasional Implementasi Teknologi Informasi dalam pengembangan Industri kimia, Kimia dan Manufaktur, 25 Nopember 2009, Surabaya.
Cassava-based bioethanol production process is done in a pilot-scale plan (capacity of 50 kg of cassava starch / process). This study aimed to study the effect of α-amylase enzyme doses were added at various temperature hydrolysis process and dosage Gluko Amylase enzymes are added at different time saccharification to glucose levels. Hydrolysis and saccharification reactor using a stirred tank reactor equipped with temperature control and extractor unit. The hydrolysis process is run with a ratio of 1: 4 (1 part of cassava starch + 4 parts water) and temperature maintained 90 ° C and processing time 1 hour. For Saccharification processes are studied temperature range 30-80 oC for 1-5 hours by adding a suitable enzyme dosage is executed. Furthermore, the solution was cooled to room temperature and carried out the extraction process for separation of solids (cake) and the solution. Glucose solution is fermented by adding yeast, Urea and NPK nutrients. The fermentation process carried out over 4 (four) days at a temperature of 30 oC. Fermentation products termed fermentation broth containing 6-9% alcohol. Purification process of fermentation broth using distillation apparatus equipped with reboiler, reflux column and a total condenser with fixed reboiler temperature 90 o C and maintained reflux temperature 75 o C. Results were analyzed ethanol content of alcohol. Relatively good results obtained on the addition of enzyme α-amylase enzyme of 200 ppm and 150 ppm Gluko amylase, saccharification at 60 o C for 3 hours which produce glucose level 160 g / L. Bioethanol is produced from a single stage distillation with reflux alcohol content ranges from 85% to 95% which can be used as Alternative Energy. Keywords: Bio-Ethanol, Alternative Energy, Cassava, hydrolysis.
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