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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal Agro Dedikasi Masyarakat (JADM) Kubis
Sahbudin, Muhammad
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Agriculture, Biological Sciences & Forestry Humanities Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering

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SOSIALISASI PENGOLAHAN KOTORAN TERNAK SAPI MENJADI BIOGAS DI DESA RANJOK KABUPATEN LOMBOK BARAT Ronia, Ronia; Sahbudin, Muhammad; Kuswari, Zeta; Pacitra, Silda; Febriana, Dina; Kurniawati, Kurniawati; Anggriani, Nining; Fernanda, Muhammad; Apriandi, Doni; Samad, Abdul; Nurnaningsih, Ratna; Muanah, Muanah; Ihromi, Syirril
Jurnal Agro Dedikasi Masyarakat (JADM) Vol 2, No 2 (2021)
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1130.837 KB) | DOI: 10.31764/jadm.v2i2.6247

Abstract

Cow dung is one of the wastes that can disturb the environment. The volume that continues to increase without handling can cause disease, especially during the rainy season. So seeing these conditions, socialization was carried out to increase the knowledge and skills of the community in processing cow dung waste into biogas. The method or activity steps are the preparation, socialization, and evaluation stages. The results of the activity showed that the socialization activity with the theme of utilizing cow manure into biogas received a good response from all circles of society, especially members who were members of the human-informed cattle group and from the village of Ranjok itself. The socialization activity was attended by 23 people who enthusiastically participated in the activity until the end. The results of the evaluation by conducting interviews that the community is ready to be involved in biogas production training activities by applying biodigester technology. In addition, with the knowledge and skills that the community has independently, they can process cattle waste into biogas so that the volume of waste can be reduced and biogas can be utilized.
Optimization of used engine oil Furnace Design with Initial Heater Sahbudin, Muhammad; Hermawan, Wawan; Sutejo, Agus
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 13 No. 4 (2024): December 2024
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v13i4.1237-1248

Abstract

Used engine oil is a waste from various types of machinery that has potential as an alternative fuel. The viscous characteristics of used engine oil require viscosity adjustment to be utilized as fuel. Nowadays used engine oil burners are generally using an external heater as an initial preheater, which causes the thermal efficiency decreased. The aims of this study are optimizing the design of the used engine oil burner by adding an initial heater and to find the optimum operating conditions of the burner to improve thermal. The initial heater is a spiral-shaped heat exchanger around the flame inside the burner, using its heat to decrease the viscous of used engine oil, so the used engine oil can be used as burner fuel. This study is varying the combustion air flowrate at 3.2×10-3 kg/s, 4.6×10-3 kg/s, and 6.4×10-3 kg/s and fuel rates of 2.1×10-4 kg/s, 3.1×10-4 kg/s, and 4.3×10-4 kg/s so the best performance of the burner will be observed. The results were obtained the best burner performance air flowrate of 4.6×10-3 kg/s and fuel flow rate of 4.3×10-4 kg/s, producing flue gas heat of 544°C, useful energy of 2.69 kW, and a resulting thermal efficiency of 59.54%. Keywords: Burner, Design optimization, Initial heater, Used engine oil, Viscosity.
Analisis Kelayakan Pembuatan Instalasi Biogas Sebagai Energi Alternatif di Ranjok Lombok Barat Mawardi, Haris; Sahbudin, Muhammad; Lestari, Rina Puji
KUBIS Vol 5 No 02 (2025): November
Publisher : Program Studi Agribisnis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56013/kub.v5i02.4930

Abstract

Kebutuhan energi yang terus meningkat, terutama di pedesaan, mendorong pemanfaatan sumber energi terbarukan yang ramah lingkungan seperti biogas, yang dihasilkan dari kotoran hewan ternak. Penelitian ini bertujuan mengkaji kelayakan finansial instalasi biogas skala kelompok peternak, meliputi investasi, biaya operasional, dan manfaat ekonomi. Hasil analisis finansial menunjukkan bahwa meskipun investasi awal proyek sebesar Rp 27.165.000,00, proyek ini terbukti sangat menguntungkan. Nilai Net Present Value (NPV) positif sebesar Rp 19.635.000,00 dan Waktu Pengembalian Investasi (Payback Period) yang cepat pada Tahun ke-3 mengindikasikan kelayakan investasi yang kuat. Kelayakan ini diperkuat oleh nilai Net B/C Ratio sebesar 1,09 dan Internal Rate of Return (IRR) yang sangat tinggi, yaitu 21%. Nilai IRR ini jauh melampaui tingkat diskonto yang digunakan, menunjukkan tingkat profitabilitas yang unggul. Selain kelayakan finansial, biogas juga memberikan dampak positif lingkungan, yaitu berpotensi mengurangi emisi gas rumah kaca dan mendukung pengelolaan limbah organik secara efisien. Proyek instalasi biogas ini direkomendasikan karena menawarkan manfaat ekonomi yang kuat dan kontribusi signifikan terhadap keberlanjutan lingkungan.
Co-Authors Abdul Samad Agus Sutejo Anggriani, Nining Apriandi, Doni Febriana, Dina Fernanda, Muhammad Kurniawati Kurniawati Kuswari, Zeta Mawardi, Haris Muanah, Muanah Nurnaningsih, Ratna Pacitra, Silda Rina Puji Lestari, Rina Puji Ronia, Ronia Syirril Ihromi, Syirril Wawan Hermawan