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MEKANIK: Jurnal Ilmiah Teknik Mesin Vol 6 No 2 (2020): November 2020
Publisher : Jurusan Teknik Mesin, Fakultas Teknologi Industri, Institut Teknologi Medan (ITM)

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Penelitian ini memanfaatkan limbah tongkol jagung sebagai karbon aktif dengan matriks tepung sagu dan tepung tapioka. Penelitian ini bertujuan untuk membandingkan hasil emisi gas buang kendaraan bermotor dengan penggunaan karbon aktif tongkol jagung dengan matriks tepung sagu dan tapioka. Pemanfaatan karbon aktif diklasifikasikan menjadi dua jenis, yaitu tongkol jagung dengan jenis matriks tepung sagu dan tongkol jagung dengan jenis matriks tepung tapioka. Komposisi masing-masing karbon aktif dengan matriks divariasikan menjadi 80:20, 70:30, dan 60:40. Saat pengujian, karbon aktif tersusun rapi pada saringan udara untuk menyerap senyawa Nitrogen dari udara yang masuk ke intake manifold. Hasil penelitian menunjukkan bahwa persentase penurunan CO, HC, CO2, O2, dan NOx berturut-turut tidak signifikan dihasilkan matriks tertentu. Hal ini terlihat pada komposisi perbandingan tertentu matriks tepung sagu lebih baik untuk senyawa gas buang tertentu yang dihasilkan gas buang dan sebaliknya. Kesimpulan utama yang dapat ditarik adalah bahwa karbon aktif dari tongkol jagung sangat mempengaruhi emisi gas buang pada kendaraan. Kata kunci: Tongkol jagung, tepung sagu, tepung tapioka, emisi gas buang
Pemanfaatan Adsorben dari Tongkol Jagung sebagai Karbon Aktif untuk Mengurangi Emisi Gas Buang Kendaraan Bermotor Safri Gunawan; Hanapi Hasan; Ria Dini Wanty Lubis
Rekayasa Material, Manufaktur dan Energi Vol 3, No 1: Maret 2020
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (679.526 KB) | DOI: 10.30596/rmme.v3i1.4527


This research utilizes corncob waste as activated carbon to be adsorbent. The objective of this research is to obtain the effect of corncob and sago powder as matrix composition in reducing vehicle exhaust gas emission. The composition used is 60 grams in every dough. It will be tested three times experimental which is 80:20, 70:30, 60:40 of corncob and sago powder variation of the composition, respectively. The result shows that the number of CO, HC, and CO2 decreases to 0.24%, 75.87%, and 5.9%, respectively. The conclusion from this research show that activated carbon from corncob greatly affect exhaust gas emissions in a vehicle.
Influence of the Compression Ratio and Duration Injection on Performance and Emission of Sinjai Engine Type Flexible Fuel Engine 150 cc Fueled Bioethanol E70 Hanapi Hasan; Bambang Sudarmanta; Marthen Paloboran
IPTEK The Journal of Engineering Vol 3, No 3 (2017)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v3i3.a3167


In this study, the effects of using gasoline (E0) and gasoline-ethanol blends E70 on engine performance and exhaust emissions have been experimentally investigated. The investigation was conducted on a single-cylinder, four-stroke, spark ignition engine. The experiments were performed by varying the compression ratio and duration injection (100%, 125%, 150%, 175% and 200%) at a speed of 2000 up to 8000 rpm at full open throttle. The experimental results showed that blending gasoline with ethanol slightly increased the torque and decreased carbon monoxide (CO) and hydrocarbon (HC) emissions. It was also found that blending with ethanol allows increasing the compression ratio without knock occurrence
Mesin Penyerut Lidi Kelapa Sawit Sistem Mekanis Bagi Kelompok Masyarakat Desa Timbang Lawan Bahorok Eswanto Eswanto; Hanapi Hasan
Indonesia Berdaya Vol 3, No 3: May-July 2022
Publisher : Utan Kayu Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47679/ib.2022273


In the process of separating leaves with sticks, the community in the Timbang Lawan Village area still uses human power and is done manually with a knife or machete. The solution is to make a stick shaver machine using a mechanical system with a capacity that is tailored to the needs of the user. The aim is to help increase the yield of palm oil sticks. The implementation method begins with examining the lack of technology and equipment in palm oil palm stick extraction, with stages 1). Follow-up surveys to partner locations to find out the work process of slashing and the output capacity to be achieved to meet market demand; 2). The design of the palm oil stick shaving machine uses mechanical energy; 3) Manufacture of palm oil stick crusher machine. 4) Test and install palm oil stick scraper machine before giving it to partners. 5) Socialization on how to maintain the shaver machine in Timbang Lawan Village. 6) handover of the shaver machine unit to the community group in Timbang Lawan Village. The results obtained where the shaved stick machine that has been completed is then handed over to the PKM partner. The machine can be operated and used by partners, where the production of palm oil sticks obtained increases by more than 100% or has a capacity of 15 kg/hour sticks, compared to manual which only gets 2 to 5 kg/3 hours of clean sticks