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Analisis Penerapan Metode HIRARC Untuk Meningkatkan Keselamatan Dan Kesehatan Kerja Pada Konstruksi Saluran Kabel Tegangan Menengah (SKTM) Muhammad Fathin Taqiyuddin; Syadzadhiya Qothrunada Zakiyayasin Nisa
Venus: Jurnal Publikasi Rumpun Ilmu Teknik  Vol. 2 No. 3 (2024): Juni : Jurnal Publikasi Rumpun Ilmu Teknik
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/venus.v2i3.311

Abstract

Electricity is a vital aspect of modern infrastructure that supports various human activities. Therefore, the increasing need for electrical energy requires good planning to ensure the availability of electrical energy in the future. The transmission system, especially the Medium Voltage Cable Line (MVCL), plays an important role in distributing electrical energy from generators to consumers. However, MVCL construction involves high-risk work, so it requires special attention to occupational health and safety (OHS). This research uses the HIRARC (Hazard Identification, Risk Assessment, and Risk Control) method to identify and control risks in MVCL construction projects. It is hoped that the results of this research can provide recommendations for improving occupational safety and health as well as efficiency in future MVCL construction projects.
Peningkatan Kadar Metana Biogas dengan Metode Adsorpsi Menggunakan Adsorben Karbon Aktif Tempurung Kelapa dan Zeolit Alam pada Berbagai Laju Alir (Studi Kasus: Desa Carangwulung) Muhammad Fathin Taqiyuddin; Firra Rosariawari; Praditya Sigit Ardisty Sitogasa
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Biogas is a potential renewable energy source, but the content of impurity gases such as carbon dioxide (CO2) and hydrogen sulfide (H2S) reduces its quality and efficiency as a fuel. This study aims to analyze the effectiveness of the adsorption method using a combination of coconut shell activated carbon and natural zeolite in increasing methane (CH4) levels in biogas. The biogas used was produced from a cattle farm in Carangwulung Village. The variables tested included variations in the composition of activated carbon (C) and zeolite (Z) adsorbents with biogas flow rates (0.2; 0.4; and 0.6 L/min). The test was carried out with an adsorbent mass of 300 grams activated by KOH and the resulting pressure ranged from 9–13 mbar. The results showed that the adsorbent composition of 50C:50Z with a flow rate of 0.2 L/min gave the best performance. Under these conditions, CH4 levels could increase from 45% to 87%, where there was an increase in methane by 48%. The adsorption process at low flow rates provides optimal contact time between gas and adsorbent, thus increasing the efficiency of increasing CH4 levels. Thus, the combination of coconut shell activated carbon and natural zeolite at low flow rates is effective in improving biogas quality through the adsorption process.