Pembuatan Bioetanol Dari Kulit Nanas Melalui Hidrolisis Dengan Asam

Abstract

<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>

Study of Hydrolysis Process from Pineapple Leaf Fibers using Sulfuric Acid, Nitric Acid, and Bentonite Catalysts

“…The total sugar content of hydrolysate. drolysis process with a sulfuric acid solution at various concentrations (1-5%) and hydrolysis time (30-120 minutes) [18] and also the usage of catalyst HCl solution (0.1-0.3N) at temperatures of 30 °C and 80 °C up to 360 minutes for hydrolysis of pineapple skin [7].…”

“…The process of hydrolysis made from lignocellulose that has been carried out includes hydrolysis of water hyacinth and rice husk using sulfuric acid to produce reducing sugar 23.3 mg/g [6]. Pineapple leaves with hydrochloric acid (HCl) catalyst of 0.3N produce the highest glucose levels, 8.958-9.594% [7]. Hydrolysis of weeds (Imperata cylindrica) with sulfonated activated carbon catalyst resulted in a glucose level of 87.2% [8], while another report used similar substrate hydrolyze using 2% sulfuric acid at 140 °C generated 5.0675% alcohol [9].…”

Efektivitas Limbah Kulit Kering Nanas Madu (Ananas Comosus l.Merr) untuk Pembuatan Bioetanol dengan Proses Fermentasi dan Distilasi

“…Proses selanjutnya adalah proses fermentasi, mikroorganisme yang digunakan adalah Saccharomyces cerevisiae, merupakan khamir yang umum digunakan untuk memproduksi alkohol dengan cara fermentasi (Rahmawati, 2010). Fermentasi sukrosa membentuk etanol pada kondisi netral atau sedikit asam dalam kondisi anaerob karena dipengaruhi oleh Saccharomyces cerevisiae, maka 10% glukosa mampu direspirasi membentuk CO2 dan memproduksi kandungan etanol tidak lebih dari 50%.…”

Bioetanol Sebagai Sumber Green Energy Alternatif yang Potensial Di Indonesia

“…Hidrolisa adalah suatu proses antara reaktan dengan air agar suatu senyawa pecah atau terurai. Reaksi ini merupakan reaksi orde satu, karena air yang digunakan berlebih, sehingga perubahan reaktan dapat diabaikan (Susanti, 2011).…”

“…Reaksi bentuk padat sama dengan reaksi bentuk cair. Hanya reaksinya lebih sempurna atau lebih reaktif dan hanya digunakan untuk maksud tertentu, misalnya proses peleburan benzene menjadi phenol (Susanti, 2011). 4) Hidrolisis dengan enzim sebagai katalisator.…”