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Hasil Pencarian

Ditemukan 3 dokumen yang sesuai dengan query
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Fairuz Iftikhari
Abstrak :
ABSTRAK
Permintaan daya listrik di Indonesia belum sepenuhnya terbagi dengan rata dari sabang sampai meruke. Banyak daerah terpencil yang jauh dari pemerintahan pusat yang sama sekali tidak memiliki akses daya listrik. Beberapa solusi telah dipilih untuk menyediakan dan memenuhi kebutuhan daya listrik dengan menggunakan pembangkit listrik sumber terbaharui pada sampel daerah terpencil di desa daerah Lembang, Bandung barat. Beberapa solusi telah dirancang dengan menggunakan kombinasi tenaga surya, baterai, dan generator diesel yang di tenagai oleh minyak yang diproses dari tumbuhan Jatropha Curcas. Kombinasi-kombinasi dari sumber energi terbaharui tersebut akan dinilai dari biayanya dan yang termurah akan dipilih untuk dibangun. Energi terbaharui dipilih karena tren sedang berubah dan menuju padanya untuk sumber yang lebih baik tanpa emisi.
ABSTRACT
The demand of electricity in Indonesia has not been realized thoroughly throughout the nation. Many of the remote areas that are far from the central government have zero electricity. Several solutions have been chosen to empower and fulfill such demand in those area by using an off-grid power plant model using renewable resources in a sample remote area in a village in Lembang, West of Bandung. Several solutions has been designed using the combination of solar cell, battery and diesel generator that will be fueled by petroleum that is made from Jartopha Curcas plant. The combinations will then be assessed by looking at the cost and the cheapest of all solutions will be chosen for the village. Renewable energy is chosen because the trend is shifting towards it for a better source of energy without emission;
2016
S64609
UI - Skripsi Membership  Universitas Indonesia Library
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Bambang Heru Susanto
Abstrak :
Hydrodeoxygenation of palm oil and Jatropha curcas oil over NiMo/ZAL (nickel molybdenum/zeolit alam Lampung) catalyst was investigated under temperatures of 375°C and 400°C and H2 pressure of 15 bar in a semibatch stirred autoclave reactor. NiMo/ZAL catalyst was prepared using a rapid cooling method. NiMo/ZAL characterization revealed a crystal size of 70.07 nm, surface area of 12.25 m2/g, and pore size and pore volume of 9.83 Å and 0.0062 cm3/g, respectively. The hydrodeoxygenation removal pathway of palm oil and Jatropha curcas oil over NiMo/ZAL catalyst was primarily achieved through decarboxylation. Under hydrogen pressure of 15 bar and temperature of 375°C, palm oil and Jatropha curcas oil can be converted into paraffin chains (from n-C15 up to n-C18) by a decarboxylation reaction that produces water, methane, and COx gases as byproducts and contains some undesirable reactions. These byproducts can produce alkene bonds that form chains different from those in conventional diesel fuel. The conversion was 80.87%, selectivity was 52.78%, and yield was 45.66%. The hydrodeoxygenation reaction catalyzed by NiMo/ZAL catalyst was found to be suitable for removing oxygen and producing paraffin chains; this increased the heating value and stability of renewable diesel fuel.
Depok: Faculty of Engineering, Universitas Indonesia, 2016
UI-IJTECH 7:8 (2016)
Artikel Jurnal  Universitas Indonesia Library
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Andres Suranto
Abstrak :
Reaksi dekarboksilasi minyak jarak pagar dengan penambahan Ca(OH)2 berlebih untuk pembuatan hidrokarbon setara fraksi diesel telah dilakukan. Reaksi dilakukan di dalam reaktor batch yang beroperasi pada tekanan atmosferik dan temperatur antara 400-475°C. Variasi yang dilakukan meliputi variasi umpan, temperatur saponifikasi dan temperatur dekarboksilasi. Reaksi dengan umpan excess Ca(OH)2 100% mol, temperatur saponifikasi 200°C dan temperatur dekarboksilasi 475°C memberikan konversi terbesar yaitu 65,44%. Produk cair dianalisa menggunakan FTIR, menunjukkan adanya gugus keton namun tidak dijumpai adanya gugus karboksil. Hal ini menunjukkan bahwa reaksi dekarboksilasi telah berhasil dilakukan. Analisa GC - MS menunjukkan yield hidrokarbon setara fraksi diesel sebesar 38,18%. Sedangkan analisa sifat fisik yang meliputi densitas dan viskositas menunjukkan bahwa produk yang dihasilkan telah memenuhi standar yang ditetapkan oleh Dirjen Migas. ......Decarboxylation reaction of Jatropha curcas oil with Ca(OH)2 excess for hydrocarbon-diesel-like fuel production was conducted. The reaction was carried out in batch reactor at atmospheric pressure and temperature between 400-475°C. The research variations consist of feed, saponification and decarboxylation temperature. The result showed that reaction with excess Ca(OH)2 100% mol, saponification and decarboxylation temperature 200 oC and 475°C respectively, gave the biggest conversion of 65,44%. Liquid product analized with FTIR showed that ketone group was found but not carboxyl. It indicated that the decarboxylation reaction was succeesful. The GC'MS showed that the yield of hydrocarbon-diesel-like fuel was 38,18%. While the physical analysis of density and viscosity showed that product has fulfilled Dirjen Migas's standard.
Depok: Fakultas Teknik Universitas Indonesia, [2009;2009, 2009]
S51837
UI - Skripsi Open  Universitas Indonesia Library