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All Journal ARMATUR : Artikel Teknik Mesin dan Manufaktur Jurnal Ilmu Kedokteran dan Kesehatan Indonesia
Randy Yusuf Kurniawan
Institut Teknologi Sumatera
Aerospace Engineering Automotive Engineering Engineering Health Professions Industrial & Manufacturing Engineering Mechanical Engineering Public Health

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Pelapisan Antikorosi berbasis LDPE dari Limbah Kantong Plastik melalui Metode Catalytic Liquefaction Dwi Miftha Kurnia; Randy Yusuf Kurniawan; Muhammad Rifqi Dwi Septian; Rikki Nababan; Pradeha Bnesari Fitrah Lanharto; Ummi Kulsum Hidayati
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i2.11319

Abstract

Penelitian ini mengkaji pemanfaatan polimer LDPE yang berasal dari limbah kantong plastik sebagai inhibitor korosi pada besi. Proses pencairan LDPE dilakukan dengan menggunakan metode Catalytic Liquefaction dengan katalis ZnCl₂ pada suhu 300°C selama 30 menit. Pengujian karakteristik gugus fungsi dilakukan menggunakan spektrofotometer FTIR, sedangkan efektivitas inhibisi korosi dievaluasi melalui metode pengurangan berat (weight loss) dan Electrochemical Impedance Spectroscopy (EIS) dalam media NaCl 3%, NaCl 5%, HCl 3%, dan HCl 5%. Hasil penelitian ini menunjukkan bahwa polimer LDPE mampu secara signifikan menurunkan laju korosi besi. Efisiensi inhibisi tertinggi diperoleh sebesar 76,84% dalam larutan NaCl 5% dengan konsentrasi inhibitor 5 gram. Analisis EIS menunjukkan efektivitas LDPE ditandai dengan nilai total impedansi yang lebih tinggi dibandingkan tanpa penambahan LDPE (8,21 Ω vs. 5,29 Ω). Adsorpsi molekul LDPE pada permukaan logam mengikuti isoterm adsorpsi Langmuir. Penelitian ini menunjukkan potensi besar dalam pemanfaatan limbah plastik sebagai material antikorosi yang ramah lingkungan.
Analisis Deskriptif Durasi dan Jumlah Konsumsi Rokok, Kadar Hemoglobin dan Tingkat Pengetahuan Bahaya Karbon Monoksida pada Petugas Kebersihan Jalan Aulia Mutiara Hikmah; Zahara Fadilla; Randy Yusuf Kurniawan; Yuri Pradika; Gita Wideani
Jurnal Ilmu Kedokteran dan Kesehatan Indonesia Vol. 5 No. 1 (2025): Maret : Jurnal Ilmu Kedokteran dan Kesehatan Indonesia
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jikki.v5i1.6629

Abstract

This study explores the relationship between smoking habits, hemoglobin levels, and awareness of carbon monoxide (CO) risks among street cleaning workers. Smoking is one of the most common sources of CO exposure, which can bind to hemoglobin and reduce oxygen transport in the body. A total of 67 street cleaning workers in West Jakarta were involved in this research, using a descriptive analytic approach. Data were collected through blood tests for hemoglobin levels, as well as interviews and questionnaires to assess smoking habits and knowledge of CO. The findings show that most respondents were light smokers (1–10 cigarettes per day), and 43% had been smoking for less than five years. While 66% of participants had normal hemoglobin levels, 33% had elevated levels, which may reflect the body’s response to reduced oxygen availability. Interestingly, 70% of respondents were aware of the health risks of CO, but knowledge tended to decline among long-term or heavy smokers. This indicates a gap between behavior and risk awareness. The study highlights the need for ongoing health education targeted at outdoor workers to increase understanding of CO exposure and prevent potential health impacts.
Co-Authors Aulia Mutiara Hikmah Dwi Miftha Kurnia Gita Wideani Muhammad Rifqi Dwi Septian Pradeha Bnesari Fitrah Lanharto Rikki Nababan Ummi Kulsum Hidayati Yuri Pradika Zahara Fadilla