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All Journal Jurnal Rekayasa Material, Manufaktur & Energi IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Darma, I Wayan Arya
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Aerospace Engineering Automotive Engineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengaruh Variasi Durasi Waktu Injeksi Oksigen Terhadap Performansi Insinerator Dual Chamber Limbah Medis Darma, I Wayan Arya; Winaya, I Nyoman Suprapta; Pratama, I Putu Angga Yuda; Sanatana, I Ketut Sakya
Rekayasa Material, Manufaktur dan Energi Vol 8, No 2: JULI 2025
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v8i2.24923

Abstract

Incineration is an effective waste processing method, especially for medical waste which is B3 waste. The high temperature combustion process in incineration is expected to be able to reduce medical waste optimally. However, emissions produced during the incineration process can pollute the surrounding environment and harm health. So it is necessary to develop incineration methods to reduce exhaust emissions but still be able to reduce medical waste optimally. In this research, additional oxygen injection was carried out in chamber 2 of the dual chamber medical waste incinerator by varying the duration of the oxygen injection time with the aim of obtaining optimal performance and reducing the resulting exhaust emissions. The research was carried out using medical waste weighing 1 kg with variations in the duration of oxygen injection, 2, 3 and 4 minutes. The research results show that increasing the duration of oxygen injection time can increase combustion efficiency, increase the temperature in chamber 2 and reduce the resulting exhaust gas emissions.
Pengaruh Persentase RDF terhadap Cold Gas Efficiency pada Co-Gasifikasi Batubara Dual Reactor Fluidized Bed Darma, I Wayan Arya; Winaya, I Nyoman Suprapta; Pratama, Yuda I Putu Angga; Irfan, Yunizill
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 5 No 1 (2026): April
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v5i1.424

Abstract

Refuse-derived fuel (RDF) can be used as an alternative fuel through gasification to produce syngas. Co-gasification, which involves blending two or more fuels, has been shown to enhance system performance compared to single-fuel gasification. The addition of RDF with high volatile matter content can improve fuel reactivity and reduce slagging. This study aims to analyze the effect of RDF percentage on coal co-gasification performance in a Dual Reactor Fluidized Bed (DRFB) system. The study demonstrates the relationship between increasing RDF percentage and the enhancement of combustible gas components (CO and H2) and Cold Gas Efficiency. Experiments were conducted with RDF variations of 0%, 5%, 10%, 15%, and 20% of the total fuel mass (0.6 kg). Results show that increasing RDF raises CO from 3.47% to 4.13% and H2 from 2.36% to 2.85%, while CH4 remains relatively constant, leading to an increase in syngas heating value from 2.68 MJ/m3 to 3.07 MJ/m3. Cold Gas Efficiency also increases from 36.21% to 45.04%. Despite a decrease in the heating value of the fuel mixture, enhanced reactivity and improved gasification reactions contribute to better syngas quality and overall system performance.
Co-Authors I Nyoman Suprapta Winaya Irfan, Yunizill Pratama, I Putu Angga Yuda Pratama, Yuda I Putu Angga Sanatana, I Ketut Sakya