Tabah, Ahmad and P.U, Antonius (2010) LAPORAN TUGAS AKHIR PEMBUATAN BIOETANOL DARI SARI KULIT NANAS. Other thesis, Universitas Sebelas Maret.

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    Pineapple skin is an agricultural waste which has a high sugar content, ranging from 8.7% to 17.53%. %. High sugar content in the skin of pineapple is possible to be used as raw material for making bioethanol through fermentation process. Based on preliminary research shows that only 76.36% of the weight of fresh pineapple can be used / consumed, while the rest is discarded as waste. This bioethanol production process through several stages. Extraction process is done by destroying the skin of pineapple that have been added aquadest with a weight ratio of pineapple skin: aquadest= 1:2, continue the screening process. And then analyzed glucose levels. An anaerobic fermentation process took place at pH 4-5 using yeast (Saccharomyces cerevisiae), which will decompose glucose into ethanol. That the optimal growth and propagation yeast, added weight of four grams of urea as a nutrient into the media. To separate the ethanol that is formed, distillation process is carried out at temperatures 90-95 0 C for approximately three hours until the distillate no longer dripping. In this study the variation of weight ratio yeast used and duration of fermentation. From the results of the study, form 400 grams pineapple skin can be produce to ethanol with a concentration 15.45% (w/w), yield 9.39%, amounting to 52.56% conversion of glucose, and fermentation time for three days. It can be formulated to make bioethanol from the skin of pineapple juice required comparison as follows: weight of aquadest and the skin of pineapple = 2:1, 3 day fermentation period, the ratio of the number

    Item Type: Thesis (Other)
    Subjects: T Technology > TP Chemical technology
    Divisions: Fakultas Teknik > D3 - Teknik Kimia
    Depositing User: Vera Suryaningsih
    Date Deposited: 17 Jul 2013 23:11
    Last Modified: 17 Jul 2013 23:11

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