Article Per Year (5 Year)
p-Index From 2021 - 2026
0.444
P-Index
This Author published in this journals
All Journal Jurnal Inotera IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Helsinky, Mava Nurhaliza
Unknown Affiliation
Automotive Engineering Computer Science & IT Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Feasibility Analysis of Industrial-Scale Pyrolysis of 200 kg Polyethylene and Polystyrene Plastic Waste Dewi, Indah Noor Dwi Kusuma; Muhammad, Alief; Achmadin, Wahyu Nur; Andrie; Helsinky, Mava Nurhaliza; Aprillia, Wulan
Jurnal Inotera Vol. 10 No. 1 (2025): January-June 2025
Publisher : LPPM Politeknik Aceh Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31572/inotera.Vol10.Iss1.2025.ID461

Abstract

This study analyzes the feasibility of industrial-scale pyrolysis of polyethylene (PE) and polystyrene (PS) plastic waste with a feedstock capacity of 200 kg per day. PE and PS plastics are pyrolyzed at temperatures of 400°C, 450°C, and 500°C until the feedstock is fully decomposed, indicated by the cessation of smoke emission from the reactor. The optimal conditions obtained are then used as a reference for energy calculations in a 200 kg industrial-scale process. The pyrolysis duration varies depending on the type of plastic and operating temperature, with the longest time recorded for PE pyrolysis at 450°C for 98 minutes, while the shortest time was observed for PS pyrolysis at 400°C for 31 minutes. The resulting heating rate indicates that higher temperatures lead to lower heating rates for both PE and PS plastics. The results indicate that increasing the temperature enhances the oil yield (v/wo) up to a certain limit before it begins to decline. The pyrolysis oil yield from PS plastic is higher than that from PE, as styrene monomers naturally exist in a liquid phase. The oil yield from PS remains relatively constant despite temperature increases, whereas the yield from PE follows an increasing trend before declining at the highest temperature. The decrease in PS pyrolysis oil density at higher temperatures also suggests differences in physical characteristics compared to PE. The energy consumption analysis indicates that PS plastic pyrolysis requires more energy than PE, with an average energy consumption of 75.14–77.57 kJ/g for PS and 18.7–33.94 kJ/g for PE. However, the oil yield from PS reaches approximately 79–80% of its initial weight, which is higher than that of PE pyrolysis oil. From an economic perspective, converting PE and PS plastic waste into fuel is not entirely feasible, as the energy produced is insufficient to sustain the pyrolysis process itself. The revenue from selling PE pyrolysis oil amounts to Rp 14,729,000 per month, while PS pyrolysis oil generates Rp 30,927,000 per month. Nevertheless, the social benefits of reducing plastic waste provide an added value that cannot be overlooked.
Penelitian Perubahan Kinerja Mesin dan Karakteristik Emisi pada Remapping ECU pada Sistem Mesin 150cc Empat Tak dengan Satu Poros Nocken Atas Wicaksono, Dodo; Muhammad, Alief; Fathuddin Noor, Muhammad; Dewi, Indah Noor Dwi Kusuma; Helsinky, Mava Nurhaliza; Prasetiyo, Dani Hari Tunggal; Achmadin, Wahyu Nur 
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.v5i1.374

Abstract

This study evaluates the effects of ECU remapping, ignition system adjustments, and air-fuel ratio (AFR) modifications on engine performance and emission characteristics. Tests were conducted over engine speeds ranging from 4000 to 9000 RPM with different configurations: ECU, ignition system, and AFR adjustments. Results indicate that AFR remapping combined with fuel system tuning enhances torque and power at mid-range RPM, reaching a maximum torque of 12.98 N·m and power of 12.25 HP. ECU and ignition modifications increased CO and HC emissions, whereas AFR optimization through the fuel system reduced CO and improved Lambda toward stoichiometric balance. These findings highlight the importance of balancing performance improvement with emission control.
Co-Authors Achmadin, Wahyu Nur Achmadin, Wahyu Nur  Alief Muhammad Andrie Aprillia, Wulan Dani Hari Tunggal Prasetiyo Dewi, Indah Noor Dwi Kusuma Fathuddin Noor, Muhammad Wicaksono, Dodo