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All Journal PROSIDING SEMINAR KIMIA Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal VORTEKS Industrika : Jurnal Ilmiah Teknik Industri Jurnal Derma Pengabdian Dosen Perguruan Tinggi (Jurnal DEPUTI) IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Riana Puspita, Riana
Institut Teknoogi Medan
Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Journal : Jurnal VORTEKS

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Lean six sigma approach to increase process cycle efficiency in palm oil processing at PT. X Puspita, Riana; Polewangi, Yudi Daeng; Fazri, Muhammad; Refiza; Siregar, Zufri Hasrudy
Jurnal VORTEKS Vol. 5 No. 1 (2024): April 2024
Publisher : Program Studi Teknik mesin, Fakultas Teknik, Universitas Al Azhar Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54123/vorteks.v5i1.357

Abstract

The Indonesian palm oil industry, a global leader in production, faces increasing challenges in maintaining efficiency and quality. This study aims to apply the Lean Six Sigma methodology to enhance production processes by integrating Lean Manufacturing principles with the systematic, data-driven approach of Six Sigma. Using the Define-Measure-Analyze-Improve-Control (DMAIC) framework, the research identifies and mitigates inefficiencies in key stations of a palm oil mill. Novelty lies in the application of Lean Six Sigma to the palm oil industry, demonstrating significant improvements: a 16% increase in process cycle efficiency, a reduction of 70.5 kg in daily fresh fruit bunch (FFB) losses, and a decrease in associated costs by IDR 176,750 per day. The findings underscore the potential for continuous improvement in the industry through the systematic application of Lean Six Sigma.
The Effect of fuel mixture composition on gasoline engine emissions in urban conditions Siregar, Zufri Hasrudy; Nasution, Arif Fadillah; Fazri, Muhammad; Refiza, Refiza; Puspita, Riana; Thamrin, Husni; Nasution, Asmara Sari
Jurnal VORTEKS Vol. 5 No. 2 (2024): October 2024
Publisher : Program Studi Teknik mesin, Fakultas Teknik, Universitas Al Azhar Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54123/vorteks.v5i2.389

Abstract

The increasing number of motorized vehicles in urban areas significantly impacts air quality and public health. Gasoline engine emissions, including CO, HC, and NOx, contribute to pollution issues such as volatile organic compounds (VOCs) and secondary organic aerosols (SOAs). Understanding these factors is crucial for developing effective emission control strategies. This study investigates the effect of ethanol-blended gasoline on vehicular emissions, focusing on CO, HC, and NOx. The research aims to optimize fuel mixtures to reduce harmful emissions while considering environmental and health impacts. The study uses a quantitative experimental design, combining laboratory tests with field trials on 10 vehicles under controlled conditions. Results show that ethanol-blended fuels significantly reduced CO emissions, from 2.4 g/km (E0) to 1.5 g/km (E30). A moderate reduction was observed in HC emissions, from 0.55 g/km (E0) to 0.40 g/km (E30). A slight decrease in NOx emissions was noted. Ethanol's oxygen content improves combustion efficiency, reducing CO and HC emissions, but may slightly increase NOx due to combustion temperature changes. This study highlights the potential of ethanol as an environmentally friendly fuel alternative, with further research needed to address NOx-related challenges
Co-Authors Aldori, Yopan R. Aryanta Sembiring, Robi Asmara Sari Nasution Diansyah, Diansyah Elfrida Ratnawati Fazri, Muhammad HENRY ISKANDAR Husni Thamrin Ikhwan, Rosendra Jayawarsa, A.A. Ketut Jubaidah, Jubaidah Lubis, Saidan Sany marali banjarnahor, marali Mawardi Meidiansyah, Fadli Muhammad Irwansyah, Muhammad Nasution, Arif Fadillah Polewangi, Yudi Daeng Reakha Zulvatricia Refiza Refiza, Refiza Rigitta , Prinsi Rigitta, Prinsi Romadon, Muhammad Saktisahdan, T. Jukdin Simanjuntak, Sarah Stefhanie Simorangkir, Simon Petrus Siregar, Roswani Siregar, Zufri Hasrudy Suita, Diana Suprapto Suprapto Syahra, Assyfa Trisilo, Muji Yetti Meuthia Hasibuan Zaharuddin Zaharuddin Zurairah, Masdania