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All Journal Rekayasa Mesin Jurnal Ilmiah Pangabdhi Jurnal Abdi Insani International Journal of Science, Engineering and Information Technology International Journal Mathla'ul Anwar of Halal Issues Jurnal Polimesin
Mubarok, Khamdi
mpramudia@gmail.com
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Journal : Jurnal Polimesin

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Performance evaluation of a steam-assisted incinerator using used oil fuels for diaper waste treatment under natural convection Irawan, Ibnu; Budiarto, Hairil; Mubarok, Khamdi; Amandha, Yaumil Nurchoir
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6932

Abstract

Incinerators offer an effective solution for waste processing by maintaining high combustion temperatures in a well-insulated and enclosed chamber. The combustion process using an incinerator has the ability to convert waste into steam gas and ash that can be utilized. The advantage of the incineration process is its ability to reduce the volume of waste significantly, with a reduction rate of more than 65%.  In this research, a water steam stove was fuelled by liquid waste namely used motor oil and used cooking oil. It was tested for its performance in burning diaper waste under natural convection. The stove used has a height of 370 cm, a nozzle diameter of 2 cm, and a water vapor flow rate of 0.75 kg/hour. This study aimed to evaluate the thermal efficiency of the incinerator and analyze the influence of natural convection, fuel type, and the number of air holes on combustion performance. Experimental results showed that using eight air holes produced optimal results. Combustion with used motor oil reached the highest temperature of 397°C, burned for 65 minutes, and left 0.68 kg of ash residue. In comparison, used cooking oil reached 381°C, burned for 89 minutes, and left 0.95 kg of ash. The difference in fuel boiling points and viscosity significantly affected combustion efficiency. The highest thermal efficiency was 87% when using used motor oil, compared to 35% for used cooking oil. These findings suggest that used motor oil is a more effective and efficient fuel for diaper waste incineration in naturally ventilated systems.
Energy content analysis of extruded briquettes: effects of mesh granularity and corn cob-to-coconut shell residue blend composition Mubarok, Khamdi; Prasetyo, Teguh; Pratama, Ian Budi
Jurnal Polimesin Vol 24, No 1 (2026): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i1.7244

Abstract

The conversion of agricultural residues into biomass briquettes presents a sustainable alternative for energy generation, addressing waste management challenges, reducing fossil fuel dependence, and mitigating carbon emissions. This study analyzes the influence of material mesh granularity and corn cob-to-coconut shell residue blend composition on the energy content and quality metrics of extruded briquettes. The primary objective is to investigate the effects of formulation parameters on energy yield (calorific value), structural durability (shatter index), and ash content. Employing an experimental approach combined with statistical analysis (Analysis of Variance (ANOVA) and Friedman test), the impacts of varying mesh sizes and compositional mass ratios were systematically evaluated. The results showed that calorific values ranged between 4,739–5,143 cal/g, ash content varied from 14.95–23.62%, and the shatter index from 0.04–1.33%. The optimal performance was obtained at 50 mesh with 70% corn cob charcoal and 30% coconut shell residue, yielding the highest calorific value (5,143 cal/g), the lowest ash content (16.66%), and excellent durability (shatter index 0.04%). Statistical analysis (ANOVA and Friedman test) confirmed that both particle size and blending ratio significantly affected all quality metrics (p 0.05). These findings provide actionable insights for enhancing energy content and overall quality of extrusion-derived briquettes from agricultural residues. The research underscores the essential role of precise material selection and parameter control in developing efficient and sustainable solid biomass fuels.
Co-Authors Afifa, Fitria Hersiana Agung Saputro, Agung Amandha, Yaumil Nurchoir Anisa Anggraini Anwar, Muhammad Nurul Ardiansah, Andhika Ghoni, M. Abdul HADI PERISTIWO, HADI Hairil Budiarto Hakam Muzakki Ibnu Irawan ILHAM CAHYA Izdihar, Dhiaqonita Kautsari Izzudin, Mohammad Nur Khoirun Nuha, Achmad Laksani, Mertiara Ratih Terry Mirza Pramudia Mohamad Mustajib, Mohamad Murodah, Nailatul Pratama, Ian Budi Syah, Achmad Fachrudin Teguh Prasetyo UMI PURWANDARI