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Hasil Pencarian

Ditemukan 2 dokumen yang sesuai dengan query
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Siregar, Sri Rachmawati Hidayah
"Pengolahan sampah menjadi energi dapat menyelesaikan permasalahan energi dan permasalahan sampah secara bersamaan. Sampah dapat digunakan sebagai bahan baku dalam proses pembuatan pelet yang kemudian digunakan sebagai bahan bakar pada proses termal. Pada proses peletisasi terdapat variabel-variabel operasional yang berpengaruh terhadap karakteristik dan kualitas pelet yang dihasilkan. Pada penelitian ini dilakukan variasi komposisi sampah (sisa makanan, sampah taman, plastik, dan kertas), variasi temperatur die (ambient, 60°C, 80°C, 100°C, dan 150°C) serta variasi ukuran partikel (mixed, <30 mesh, dan >30 mesh). Bahan baku sampah diproses dengan tahap pengeringan alami, penggilingan, dan pembuatan pelet dengan metode single pellet press. Tekanan pelet dan dimensi cetakan pelet dibuat tetap sebesar 288 MPa dan diameter 6 mm. Parameter karakteristik pelet dibatasi pada kadar air dan kadar abu, serta parameter kualitas pelet dibatasi pada densitas unit, dan nilai kalor. Hasil penelitian menunjukkan terdapat pengaruh temperatur die secara simultan pada penentuan nilai densitas unit, nilai kalor, kadar abu, dan penurunan kadar air namun tidak terhadap nilai kadar air pelet. Temperatur die yang efektif dalam pembuatan pelet sampah secara umum adalah pada nilai 100°C dengan komposisi sisa makanan dan sampah taman (organik) yang lebih tinggi serta pada ukuran partikel >30 mesh (0,5-5 mm).

Waste to energy process can solve energy problems and waste problems simultaneously. The waste can be used as a raw material in pelletization process which then used as a fuel in the thermal processing. In the pelletization process there are operational variables that influence the characteristics and quality of the pellets produced. Variation of waste composition (food waste, garden waste, plastic and paper), die temperature (ambient, 60°C, 80°C, 100°C, and 150°C) and particle size (mixed, <30 mesh, and >30 mesh) are done in this study. The waste processed by natural drying, crushing, and making pellets using the single pellet press method. The pellet pressure and dimensions of the pellet mold are fixed at 288 MPa and 6 mm in diameter. Characteristic parameters and pellet quality are limited to unit density, calorific value, moisture content, and ash content. The results showed that there was a simultaneous influence of die temperature on determining the unit density, calorific value, ash content, and delta moisture content value but not on the pellet moisture content value. The effective operational variabels for MSW pellets are die temperature at 100°C with high composition of food waste and garden waste (organic) and in particle sizes >30 mesh (0.5-5mm)."
Depok: Fakultas Teknik Universitas Indonesia, 2019
T53323
UI - Tesis Membership  Universitas Indonesia Library
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Apri Wiyono
"Increasing energy demand, in line with the rate of population growth, is always followed by the pace of the waste dump. Where the largest percentage comes from organic waste, it is potentially utilized as raw material of biomass mixture for emission reduction efforts in fuel conversion from waste energy. The main objective of this paper is to study the characteristics of co-gasification, especially gasification temperature, lower heating value and gas emission, on the performance of the biomass gasification process in a downdraft fixed bed gasifier. In this study, organic waste used twigs, coconut fibers and rice husks in the pelletization as raw materials on the combustion technology Downdraft Gasifier. Methods were carried out by co-gasification techniques between WCF (wood-coconut fibers) pellet and rice husk on 100% pellet composition, 75:25, 50:50, 25:75 and 100% rice husk. Syngas testing is done with direct measurement on the burner with TCD type Shimadzu 8A gas chromatography. The highest reactor temperature in the pyrolysis zone was 400oC to 850oC and the temperature in the oxidation zone was 1000oC to 1200oC. The result of the synthetic gas testing obtained the highest lower heating value (LHV) in WCF 100% pellet composition at 4.07 MJ/Nm3 with 85% efficiency. The lower heating value of the lowest syngas in a 100% pellet composition was 2.99 MJ/Nm3, where the increase of WCF pellets will increase the LHV syngas value. This resulted in visually low tar content and low ash particles in all compositions of approximately 30 to 35% of the initial mass of each composition, with the lowest ash in 100% rice husk composition at 0.29 g."
Depok: Faculty of Engineering, Universitas Indonesia, 2017
UI-IJTECH 8:7 (2017)
Artikel Jurnal  Universitas Indonesia Library