Studi Pengaruh Mikroorganisme Terhadap Yield Etanol Pada Proses Fermentasi Batch

Purnama, Tri Wijaya and Adinagara, Arfian Hafidz (2015) Studi Pengaruh Mikroorganisme Terhadap Yield Etanol Pada Proses Fermentasi Batch. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pengembangan dan inovasi bahan baku sorgum sebagai penunjang kebutuhan etanol food grade adalah salah satu hal yang diprioritaskan apalagi jika mempunyai nilai keekonomian yang tinggi. Khususnya dapat membangkitkan keekonomian di masyarakat pedesaan. Sorgum adalah tanaman serealia yang potensial untuk dibudidayakan dan dikembangkan. Prospek sorgum di Indonesia dapat dijadikan komoditas andalan mengingat sorgum bisa dikembangkan searah dan sejalan dengan upaya peningkatan produktivitas lahan kosong yang jumlahnya sangat luas terdapat di negeri ini. Proses fermentasi dilakukan secara batch dalam bioreactor. Penelitian ini bertujuan untuk mengetahui pengaruh mikroorganisme Zymomonas mobilis termutasi (A3), Saccharomyces cerevisiae dan campuran Pichia stipitis dalam proses fermentasi. Suhu fermentasi dijaga 29-30°C dan sampel diambil setiap 6 jam selama 90 jam dengan variasi kadar gula awal 100 g/L dan 150 g/L. Dari hasil penelitian ini didapatkan data bahwa campuran Saccharomyces cerevisiae dan Pichia stipitis memiliki yield terbesar untuk proses fermentasi dengan kadar gula awal 100 g/L sebesar 48,99% dengan kadar etanol yang dihasilkan sebesar 6,21%. Sedangkan untuk proses fermentasi dengan kadar gula awal 150 g/L, Zymomonas mobilis termutasi memiliki yield terbesar yaitu 40,92% dengan kadar etanol sebesar 7,78%. ====================================================================================================== Development and innovation of raw materials sorghum as supporting the needs of food-grade ethanol is one thing that is prioritized especially if it has a high economic value. In particular can generate economies of rural communities. Sorghum is a potential cereal crops to be cultivated and developed, especially on marginal lands and dry in Indonesia. Prospects sorghum in Indonesia can be used as a commodity given sorghum could be developed in the direction of and in line with efforts to increase the productivity of vacant land very extensive amount contained in this country. Fermentation process using batch system in the bioreactor. In this research, the effect on the microorganisms in the fermentation process is Zymomonas mobilis mutant (A3), Saccharomyces cerevisiae and Pichia stipitis mixture. Fermentation temperature is kept at 29-30°C and sample is taken every 6 hours for 90 hours with 100 g/L and 150 g/L initial sugar concentration. From this research we obtain that mixture of Saccharomyces cerevisiae and Pichia stipitis have higher yield for fermentation process with 100 g/L of initial sugar concentration, 48,99% and the ethanol concentration is 6,21%. For fermentation process with 150 g/L of initial sugar concentration, Zymomonas mobilis mutant have higher yield, 40,92% with 7,78% of ethanol concentration.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Etanol, nira sorghum, Zymomonas mobilis, Pichia stipitis, Saccharomyces cerevisiae
Subjects: T Technology > TP Chemical technology > TP339 Ethanol as fuel. Biomass energy.
Divisions: Faculty of Industrial Technology > Chemical Engineering > 24201-(S1) Undergraduate Thesis
Depositing User: - Taufiq Rahmanu
Date Deposited: 23 Apr 2019 07:38
Last Modified: 23 Apr 2019 07:38
URI: https://repository.its.ac.id/id/eprint/62814

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