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Ena Marlina
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Automotive Engineering Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : RING Mechanical Engineering

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PENGARUH VARIASI MASSA RAGI DAN LAMA FERMENTASI PADA PEMBUATAN BIOETANOL DENGAN BAHAN AMPAS TEBU Andre Fahrul Rosy; Ena Marlina; Margianto
RING ME Vol 4 No 1 (2024): RING Mechanical Engineering
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/rm.v4i1.21529

Abstract

The use of ethanol as a fuel is increasing, while the energy source is produced from fossil fuels, namely natural resources that cannot be renewed so that one day the supply will definitely run out. Therefore, bioethanol is needed as a renewable fuel. Bioethanol is a fuel made from plant materials. One of the raw materials for making bioethanol is sugarcane bagasse. This research discusses the effect of variations in yeast mass and fermentation time on the production of bioethanol from sugarcane bagasse using experimental methods. Here the variations in time for fermentation are 2, 4, 6, 8, and 10 days and the mass of yeast is 1 gram, 3 grams, and 6 grams. The results showed that variations in yeast mass of 6 grams for 10 days produced the highest alcohol content (3.5%), while variations in the length of time of the alcohol content test results where the highest value was in variations in the length of 10 days with a total of 6%, it can be concluded that the longer the time fermentation, the alcohol content value will increase. Keywords: Bagasse, Bioethanol, Density, Yield
PENAMBAHAN TONGKOL JAGUNG PADA BATUBARA TERHADAP PERFORMA PLTU 2X150 DENGAN PROSES CO-FIRING MENGGUNAKAN SIMULASI CYCLE-TEMPO Riyan Hidayat; Ena Marlina; Artono Raharjo
RING ME Vol 4 No 2 (2024): RING Mechanical Engineering
Publisher : Universitas Islam Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33474/rme.v4i2.22596

Abstract

Co-firing adalah proses pembakaran campuran dua jenis bahan bakar untuk mengurangi emisi gas buang. Penelitian ini menggunakan simulasi Cycle-Tempo berdasarkan neraca panas Perusahaan Listrik Tenaga Uap (PLTU) 2×150 MW. Bahan bakar utama adalah batubara highest heating value (HHV) 4200 kal/gram, dengan biomassa tongkol jagung yang memiliki kandungan sulfur rendah. Rasio campuran yang dianalisis adalah 0%, 25%, dan 50%. Hasil menunjukkan daya boiler tertinggi pada rasio 0% (28.702,97 kW, efisiensi 82%), sementara rasio 25% dan 50% menurun menjadi 28.427,09 kW (efisiensi 81%) dan 28.122,75 kW (efisiensi 79%). Daya bersih pembangkit juga menurun dari 15.625,9 kW (rasio 0%) menjadi 15.281,1 kW (rasio 50%). Penurunan performa disebabkan oleh pencampuran biomassa yang kurang optimal untuk pembangkit. Net Plant Heat Rate (NPHR) menunjukkan efisiensi terbaik pada rasio 0%, mendukung pembangkit menghasilkan energi dengan lebih mudah. Co-firing biomassa dapat mengurangi emisi tetapi menurunkan performa pembangkit secara keseluruhan.
Co-Authors Andre Fahrul Rosy Artono Raharjo Bagas Putro Citra Kurniawan Ifit Novita Sari Margianto Mohammad Miftahul Anwar Nur Robbi Otto Fajarianto Riyan Hidayat Syaifulloh Ahmad Tri Candra Wulandari Unung Lesmanah