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I Wayan Susila
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Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pembuatan Biodiesel Dari Biji Karet I Wayan Susila,
Teknika Vol 9, No 1 (2008)
Publisher : Teknika

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Abstract

Biodiesel from rubber seed oil (Hevea Brasiliensis) can be produced through double-stage transesterification processes, and the objectives of this research are to know the effect of reactant amount and reaction time on producing biodiesel from rubber seed oil. The method of this research is started by preparation process and oil extraction. The next step is degummed rubber seed oil. Continued with esterification with acid catalyst (H2SO4) 0.5% weight from rubber seed oil used, reactants are rubber seed oil and methanol with molar ratio 1:5, 1:6, 1:7 dan 1:9 at 50°C for 150 minutes with blending at hot strirrer scale 7. The processes are continued with transesterification process with base catalyst (NaOH) 0.5% weight from rubber seed oil used, reactants are rubber seed oil and methanol with molar ratio 1:9 at 50°C for 20, 30, 40 and 50 minutes with blending at hot strirrer scale 7. The last steps of these processes are yield and quality of biodiesel analysis. The result of this research shows that the maximum biodiesel yield of  94.871% can be obtained at molar ratio esterification process 1:6 and reaction time of transesterification process 40 minutes; density, kinematic viscosity, flash point and calculated cetane index are 0.877 g/cm3, 4.552 cSt, 103oC and 43.756 resvectively.
Pengaruh Penambahan Octane Booster Terhadap Kualitas Biodiesel Dari Biji Karet I Wayan Susila,
Teknika Vol 10, No 1 (2009)
Publisher : Teknika

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Abstract

Kebutuhan bahan bakar minyak secara nasional setiap tahun meningkat terus seirama dengan semakin bertambahnya jumlah penduduk. sementara itu cadangan minyak bumi semakin menipis. Persoalan utama yang sering dihadapi dalam produksi biodiesel dari minyak nabati adalah tingginya viskositas maupun densitasnya sehingga dapat menurunkan kinerja mesin. Oleh karena itu biodiesel perlu dicampur dengan solar pada tingkat perbandingan tertentu Tujuan penelitian ini adalah untuk menghasilkan kwalitas campuran antara biodiesel dari biji karet dan solar (B-10 dan B-20) dan kemudian masing-masing dicampur dengan octane booster 1,0%; 1,25%; dan  1,5%v agar kwalitasnya memenuhi standar Pertamina. Biodiesel diproduksi melalui metode katalis dengan sistem pencucian “wet wash system” menggunakan air. Hasil penelitian ini menunjukkan bahwa penambahan octane booster 1% menghasilkan kwalitas bahan bakar terbaik karena nilai kalor tertinggi, sedangkan viskositasnya paling kecil, sedikit di atas standar Pertamina. The national need of fuels was increase every year according to the increase of population, while the crude oil resources were decrease. The main problem on biodiesel production from vegetable oil was high of viscosity and density which can to decrease of engine performance. Therefore, it was necessary be mixed with solar at proportional stages. The objective of this research was obtain the quality of mixture between biodiesel from rubber seed and solar (B-10 and B-20) and then was mixed with octane booster 1.0%, 1.25% and 1.5%v respectively so that it qualities according to Pertamina standard. Biodiesel was product via catalytic method with “wet wash system” use the water. This result shown that addition octane booster 1.0%v in B-10 has the best quality because it has highest heating value and viscosity was lowest, a little above of Pertamina Standard.
RANCANG BANGUN MESIN PEMOTONG SERBA GUNA HEMAT ENERGI PENUNJANG PRODUKTIFITAS UKM KERUPUK Akhmad Hafizh Ainur Rasyid; I Wayan Susila; Dewanto Dewanto; Dany Iman Santoso
Otopro Vol 18 No 1 Nov 2022
Publisher : Jurusan Teknik Mesin Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/otopro.v18n1.p7-12

Abstract

Puli crackers are an SME business in Indonesia which has a fairly good protein composition and is usually used as souvenirs of Madura. The problems of most Indonesia’s SMEs are still using manual labour with makeshift equipment. and the assistant machines available in the market have a large capacity so they are not easy to use on a household scale with small electrical capacity. The development method used in the design of an energy-efficient general-purpose cutting machine is engineering design until test and evaluate prototype stage. The engine capacity is 1,065 gr/s at the 2nd or 3rd 24 V dimmer speed setting. The result of this design process is the selection of an electric motor driven machine that is adjusted to the required power with reduced direct transmission in order to be able to cut the cracker dough.
Co-Authors Akhmad Hafizh Ainur Rasyid Dany Iman Santoso