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All Journal Journal of Renewable Energy and Mechanics MACHINERY: Jurnal Teknologi Terapan
Irfan Dzaky, Muhammad
Unknown Affiliation
Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Analisis Pengujian Kinerja Mesin Pencacah Sampah Organik Untuk Pembuatan Pupuk Kompos Akhirula, Fachryan; Effendi, Sairul; Irfan Dzaky, Muhammad
MACHINERY Jurnal Teknologi Terapan Vol. 6 No. 3 (2025): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36257/machinery.v6i3.11413

Abstract

Penelitian ini menganalisis kinerja mesin pencacah sampah organik terhadap dua jenis bahan, yaitu sayuran dan rumput pembohong. Mesin menggunakan motor bensin 7,5 HP dengan pisau pencacah dan sistem hammer mill. Uji coba dilakukan sebanyak tiga kali pada masing-masing bahan untuk mengukur kecepatan, konsumsi bahan bakar, waktu pencacahan, dan hasil cacahan. Hasilnya menunjukkan bahwa mesin lebih optimal untuk sayuran dengan kapasitas hingga 41,38 kg/jam, sedangkan rumput hanya mencapai 10,81 kg/jam. Sayuran lebih mudah tercacah karena teksturnya lunak, sementara rumput berserat dan melilit pisau. Uji peer-to-peer t-test menunjukkan perbedaan signifikan pada konsumsi bahan bakar, waktu, dan hasil cacahan, namun tidak pada kecepatan. Mesin lebih efektif untuk bahan lunak, dan diperlukan modifikasi desain untuk efisiensi pencacahan bahan berserat. Temuan ini mendukung pengembangan teknologi yang tepat guna dalam pengolahan limbah organik.
Effect of Differences in Fluid Pressure Passing Through Venturi on Dissolved Oxygen Level in Medical Waste Water: Effect of Differences in Fluid Pressure Passing Through Venturi on Dissolved Oxygen Level in Medical Waste Water Anwar, Zainuri; Irfan Dzaky, Muhammad; Reco Putra, Aldony; Bayu Saputra, Fajri; Roihan, Mohammad; Audhi Natanegara, Muhammad Audhi Natanegara
Journal of Renewable Energy and Mechanics Vol. 9 No. 01 (2026): REM VOL 9 No 01 2026
Publisher : UIR PRESS

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Abstract

Medical wastewater is characterized by a high organic load, which has the potential to deplete Dissolved Oxygen (DO) levels in receiving waters. One effective method to mechanically increase DO levels is through the aeration process using a venturi injector-based microbubble generator (MBG). This study aims to analyze the effect of fluid pressure variations passing through the venturi on the increase of DO levels in medical wastewater. The research was conducted experimentally by varying the fluid input pressures at 1 bar, 2 bar, 3 bar, and 4 bar to observe the effectiveness of ambient air suction through the venturi injection. DO level measurements were carried out over a time range of 15–60 minutes using a DO meter. The results indicated an increase in DO levels at an inlet pressure of 3 bar, reaching approximately 9 mg/L. However, a decrease in DO levels occurred at 4 bar, dropping to 6.1 mg/L. This was due to excessive velocity causing turbulence in the divergent zone, so the bubbles to collide and coalesce
Co-Authors Akhirula, Fachryan Audhi Natanegara, Muhammad Audhi Natanegara Bayu Saputra, Fajri Effendi, Sairul Reco Putra, Aldony Roihan, Mohammad Zainuri Anwar