Produksi Bioetanol dari Kulit Pisang Kepok dengan Variasi NPK melalui Hidrolisis Asam Klorida

Pratama, Prayuda Alfian Syah Arya (2022) Produksi Bioetanol dari Kulit Pisang Kepok dengan Variasi NPK melalui Hidrolisis Asam Klorida. Undergraduate thesis, Politeknik Negeri Jember.

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Abstract

To reduce dependence on fuel oil, the use of bioethanol is encouraged, one of which  is the second generation. The second generation of bioethanol is produced from  cellulose, hemicellulose as raw materials and bound by lignin, one of which is  Kepok banana peel. The process of destroying lignin using chemical delignification  was carried out by soaking kepok banana peel flour in a 10% NaOH solution with  a mass ratio of 1:6 (w/v) for 12 hours. The delignified raw materials were then  tested for their lignocellulosic content using the Chesson Datta method. The  delignification method with 10% NaOH can decrease the lignin of Kepok banana  peel by (36,6%), hemicellulose by (11,1%) and increase the cellulose content by  62,8%). The result of delignification was continued in the hydrolysis step using HCl  concentration of 2M, the result was 13.5° brix. The fermentation stage uses a starter  of baker's yeast with a concentration of 1.4%, urea nutrition with a concentration  of 1% and a variety of NPK nutrients (0.6%, 0.8%, 1.0%) for 3 days and a substrate  volume of 150 ml followed by distillation. until it doesn't drip. The best Kepok  banana peel bioethanol content (6.5%) with a volume of 17ml was obtained at 0.8%  NPK treatment. The yield produced in this treatment was 17%.

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