PEMBUATAN BIOETANOL DARI KULIT NANAS MELALUI HIDROLISIS DENGAN ASAM
<p>Abstract: Pineapple skin is an agricultural waste that has a carbohydrate content of about<br />10:54% and the skin of pineapple juice glucose levels by 17% so it can be utilized to ethanol.<br />Hydrolysis reaction is so slow that the reaction requires a catalyst. The catalyst used in this<br />study were hydrochloric acid (HCl). This study aims to Learn how to use the skin of pineapple<br />waste as alternative raw material manufacture bioethanol. The variables studied were the<br />concentration of hydrochloric acid, the hydrolysis and fermentation time. Sorghum starch<br />hydrolysis process using a three neck flask equipment, mercury stirrer, heating mantle, cooling<br />behind and a thermometer to measure temperature. Sampling for glucose analysis performed<br />when the temperature reaches 100 ºC every 45 minutes to obtain optimum glucose levels.<br />Glucose samples were analyzed by using the Lane-Eynon. Data analysis showed the longer the<br />higher the hydrolysis of the resulting glucose levels, but there are times when the glucose level<br />will drop over time for glucose resulting damage due to continuous heating. In the fermentation<br />process is carried out with fermentation time of 24 hours, 48jam, 72 hours, 96 hours, 120 hours<br />fiber. The most optimum bacterial activity is a long fermentation for 96 hours. Distillation process<br />carried out on the final results of ethanol fermentation and obtained the highest levels of<br />31.399%.<br />keyword : Pineapple skin, hydrolysis, fermentation, distillation, ethanol.</p>