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All Journal R.E.M (Rekyasa Energi Manufaktur) Jurnal Studi Kasus Inovasi Ekonomi
Kuntang Winangun
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Humanities Economics, Econometrics & Finance Engineering Social Sciences

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PEMBERDAYAAN MASYARAKAT DALAM PEMBUATAN BIOGAS DARI KOTORAN SAPI Kuntang Winangun; Wawan Trisnadi Putra
Studi Kasus Inovasi Ekonomi Vol. 2 No. 02 (2018)
Publisher : Program Studi Manajemen, Fakultas Ekonomi dan Bisnis Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/skie.v2i02.6845

Abstract

Agricultural and livestock products produce byproducts that have not received much attention, even considered as untreated waste. In general, the waste is used as manure. In fact, from agricultural waste and animal husbandry can be used as an alternative energy source, namely from biomass. One of the efforts to utilize livestock waste is to use it to produce fuel by using biogas technology. Biogas technology provides opportunities for rural communities, especially Rejomulyo Village, West District Magetan District which has a livestock business, both individual and group, to meet the needs of daily energy independently. The potential for biogas development in Rejomulyo village is quite large. That's because quite a lot of cows are kept by the community Rejomulyo village with the number of cows per 1 house about 1-2 tail. Each 1 cow / buffalo can produce approximately 2 m3 biogas / day. Implementation of biogas technology in areas that have farms can provide economic benefits if the design is appropriate in terms of technical and operational
The Hardness and Microstructure of a Mixture of Used Plastic Waste HDPE, PET and Iron Filings Wawan Trisnadi Putra; Aliyadi; Kuntang Winangun
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 7 No 2 (2022): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/r.e.m.v7i2.1636

Abstract

Plastik memegang peranan penting dalam kehidupan manusia, karena plastik merupakan salah satu bahan yang sering digunakan dalam kehidupan sehari-hari sebagai tempat makanan, botol minuman, dll. Plastik sering digunakan karena ringan, fleksibel, dan mudah dibentuk. Namun di era sekarang ini, plastik kini menjadi masalah baru karena menyebabkan sampah plastik membutuhkan waktu yang lama untuk terurai. Selain itu, sampah tidak hanya terkait dengan plastik, tetapi logam juga dapat menjadi limbah, seperti debu besi yang dihasilkan selama pemotongan dan pengeboran material besi. Dan solusi yang ditawarkan adalah dengan memanfaatkan seluruh limbah yang ada untuk dijadikan bahan baru berupa campuran plastik dan serbuk besi dengan metode pengepresan menggunakan panas/suhu, jenis plastik yang digunakan dalam penelitian ini adalah high density polyethylene, polyethylene terephthalate dan serbuk besi, kemudian komposisi pada kisaran HDPE 30% 50%, PET 30% 50% dan serbuk besi 10% 20% Made. Hasil persentase tersebut digunakan sebagai pedoman dalam pembuatan sampel, yang kemudian diuji kekerasan dan struktur mikronya. Setelah dilakukan pengujian nilai kekerasan tertinggi yaitu 2,63 Kgf/mm², dan nilai kekerasan terendah adalah 1,93 Kgf/mm², maka pada pengujian struktur mikro menunjukkan material dengan nilai tertinggi dan terendah, terdapat perbedaan udara yang terperangkap dalam material dan densitas dari hasil pengepresan.
Tensile Strength and Microstructure Analysis of HDPE and PP Plastic Waste-Based Composites with Cassava Pulp Filler: Analisis Kekuatan Tarik dan Mikrostruktur Komposit Berbasis Limbah Plastik HDPE dan PP dengan Filler Ampas Singkong Wawan Trisnadi Putra; Nanang Suffiadi Akhmad; Munaji; Kuntang Winangun; Arie Mastiko Aji
R.E.M. (Rekayasa Energi Manufaktur) Jurnal Vol 10 No 1 (2025): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Waste is unused material from human or industrial activities. High Density Polyethylene (HDPE) is a safe plastic, while Polypropylene (PP) is a recyclable thermoplastic, potential as a matrix in composite particle boards. Specimen testing includes tensile tests and macro-microstructural analysis. The highest tensile strength, 23.642 MPa, was found in 100% HDPE composition. A blend of 60% HDPE, 30% PP, and 10% cassava pulp reached 16.026 MPa. In contrast, the lowest strength, 4.420 MPa, was in 60% PP, 35% HDPE, and 5% cassava pulp. Increasing HDPE boosts material strength due to its strong and flexible mechanical properties, but too much cassava pulp weakens it. Macro analysis showed air cavities in the specimen's center, while micro analysis revealed HDPE and PP did not mix homogeneously, with cassava pulp more mixed in PP.
Co-Authors Aliyadi Arie Mastiko Aji Munaji Nanang Suffiadi Akhmad Wawan Trisnadi Putra Wawan Trisnadi Putra