Pemanfaatan Eceng Gondok dan Jerami Padi sebagai Bahan Baku Bioetanol

Siregar, Inike Lamria (2015) Pemanfaatan Eceng Gondok dan Jerami Padi sebagai Bahan Baku Bioetanol. Undergraduate thesis, Institut Teknology Sepuluh Nopember.

[img]
Preview
Text
3311100041-Undergraduate Thesis.pdf - Published Version

Download (2MB) | Preview

Abstract

Eceng gondok dan jerami padi merupakan biomassa yang jumlahnya melimpah di alam dan dapat berdampak negatif bagi lingkungan. Eceng gondok dapat menurunkan kualitas perairan, sedangkan jerami padi sebagian besar menjadi limbah pertanian dan dibakar. Namun, eceng gondok dan jerami padi mengandung lignoselulosa yang dapat dimanfaatkan sebagai bahan baku bioetanol. Tujuan dari penelitian ini adalah untuk mengetahui potensi campuran eceng gondok dan jerami padi dalam pembuatan bioetanol, serta menentukan kadar bioetanol optimum yang dapat dihasilkan. Proses pembuatan bioetanol terdiri atas beberapa tahap, yaitu pretreatment, hidrolisis dan fermentasi. Eceng gondok dan jerami padi dicampur dengan perbandingan 100:0, 75:25, 50:50, 25:75, dan 0:100 hingga berat total 100 g. Metode hidrolisis yang digunakan adalah hidrolisis enzimatik menggunakan jamur Trichoderma viride dan Aspergillus niger. Pada proses fermentasi digunakan ragi Saccharomyces cerevisiae dan dilakukan variasi penambahan sebanyak 50 mL dan 100 mL. Pengukuran sampel fermentasi dilakukan setelah 48, 72, dan 96 jam. Pemanfaatan campuran eceng gondok dan jerami padi berpotensi rendah sebagai bahan baku bioetanol karena menghasilkan kandungan gula reduksi dan etanol yang tergolong rendah. Hasil etanol tertinggi terdapat pada campuran 75:25, yaitu sebesar 3,50 mg/g dengan penambahan 100 mL S. cerevisiae selama 96 jam fermentasi. ====================================================================================================== Water hyacinth and rice straw are biomass which is numerous in nature and may cause negative impacts on the environment. Water hyacinth can degrade water quality, while most of the rice straw become agricultural waste and burned. However, water hyacinth and rice straw containing lignocellulose which can be used as raw material for bioethanol. The purpose of this study are to determine the potential mixture of water hyacinth and rice straw into bioethanol production, also determining the optimum concentration of ethanol production. Bioethanol production process consists of several stages, which are pretreatment, hydrolysis and fermentation. At the pretreatment process, water hyacinth and rice straw combined with ratio 100:0, 75:25, 50:50, 25:75, and 0:100 with a total weight 100 g. Enzymatic hydrolysis uses Trichoderma viride and Aspergillus niger. In the fermentation process uses Saccharomyces cerevisiae with addition variations of 50 mL and 100 mL. Fermentation sample measurement is done after 48, 72, and 96 hours. The utilization of a mixture of water hyacinth and rice straw have a low potential as raw material for bioethanol because it produces low reducing sugar and ethanol. The highest ethanol yields contained in the 75:25 mixture, which amounted to 3,50 mg/g with 100 mL addition of S. cerevisiae for 96 hours.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: bioetanol, eceng gondok, jerami padi.
Subjects: T Technology > TD Environmental technology. Sanitary engineering > TD195.B56 Biomass energy
Divisions: Faculty of Civil, Environmental, and Geo Engineering > Environmental Engineering > 25201-(S1) Undergraduate Theses
Depositing User: Mr. Tondo Indra Nyata
Date Deposited: 14 Oct 2019 01:44
Last Modified: 14 Oct 2019 01:44
URI: http://repository.its.ac.id/id/eprint/71143

Actions (login required)

View Item View Item