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All Journal BULLET : Jurnal Multidisiplin Ilmu AMMA : Jurnal Pengabdian Masyarakat
Harry Prayoga Setyawan
Politeknik Negeri Bandung
Humanities Chemistry Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Nursing

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Rancang Bangun Mesin Pencacah Untuk Pengolahan Limbah Pertanian Pasca Panen Harry Prayoga Setyawan
BULLET : Jurnal Multidisiplin Ilmu Vol. 4 No. 6 (2025): BULLET : Jurnal Multidisiplin Ilmu (INPRESS)
Publisher : CV. Multi Kreasi Media

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Abstract

The agricultural sector faces significant challenges in managing abundant post-harvest residues that have not been optimally utilized. This study aims to design and develop a hammer mill-type agricultural waste shredder with a target capacity of 100 kg/hr to support farmer mobility in local agroclimatic regions. The methodology encompasses 3D model design, technical calculation analysis, and independent manufacturing using mild steel materials. Technical analysis results indicate a design power of 6.72 kW with a torque of 35,653.3 N-mm, powered by a 7.5 HP gasoline engine at 1,800 RPM. Functional testing on rice straw and corn stalks demonstrated operational stability with an actual production capacity reaching ±99.7 kg/hr. A slight mass reduction of approximately 3.5% in the final output was attributed to moisture evaporation caused by mechanical heat during the shredding process. This innovation provides a practical solution for farmer groups in accelerating organic decomposition and improving the efficiency of livestock feed provision.
Pembinaan Dan Penerapan Mesin Pencacah Limbah Pertanian Bagi Kelompok Petani Di Kab. Rejang Lebong Harry Prayoga Setyawan; Fauzi Widyawati; Apri Setiawan; Hanni Maksum
AMMA : Jurnal Pengabdian Masyarakat Vol. 4 No. 12 : Januari (2026): AMMA : Jurnal Pengabdian Masyarakat
Publisher : CV. Multi Kreasi Media

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The agricultural sector in Babakan Baru Village faces significant challenges in managing crop residues, which are traditionally burned, leading to environmental pollution. This Community Service (PkM) program implements Appropriate Technology (TTG) through an agricultural waste shredding machine to enhance farmers' productivity and self-sufficiency. The methodology involves partner coordination, CAD-based design, manufacturing, technical assistance, and operational training. The project successfully developed a shredder unit with a 100 kg/hour capacity powered by a 7.5 HP gasoline engine. This implementation delivers transformative impacts: technically, it increases the efficiency of converting waste into compost raw materials, while economically, it reduces dependence on commercial chemical fertilizers. Furthermore, the training improved the farmer groups' human resource capacity regarding machine maintenance and Occupational Health and Safety (OHS) procedures. Overall, the program fosters sustainable agricultural modernization that is environmentally friendly and economically beneficial in Rejang Lebong Regency.
Co-Authors Apri Setiawan Fauzi Widyawati Hanni Maksum