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All Journal Jurnal Energi Dan Manufaktur Jurnal Keteknikan Pertanian Jurnal Simetris Rekayasa Mesin ROTOR: JURNAL ILMIAH TEKNIK MESIN Asian Journal of Innovation and Entrepreneurship (AJIE) Turbo : Jurnal Program Studi Teknik Mesin JMM (Jurnal Masyarakat Mandiri) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin Martabe : Jurnal Pengabdian Kepada Masyarakat Jurnal Elemen Jurnal Energi dan Teknologi Manufaktur Abdi Dosen : Jurnal Pengabdian Pada Masyarakat J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin V-MAC (Virtual of Mechanical Engineering Article) Indonesian Journal of Applied Research (IJAR) Mechonversio: Mechanical Engineering Journal International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Journal of Community Development Jurnal Energi Baru dan Terbarukan Jurnal Abdi Masyarakat Indonesia Jurnal Ilmiah Teknik Mesin Poros Mechanical Engineering for Society and Industry Automotive Experiences Jurnal Locus Penelitian dan Pengabdian Journal of Mechanical Engineering, Science, and Innovation Industrial Research Workshop and National Seminar Journal of Earth Energy Science, Engineering, and Technology Prosiding Seminar Nasional Rekayasa Teknologi Industri dan Informasi ReTII National Multidisciplinary Sciences Journal of Mechanical Engineering Jurnal Polimesin RESPINARIA: Jurnal Pengabdian Kepada Masyarakat Jurnal Kendali Teknik dan Sains
Nasrul Ilminnafik
Jurusan Teknik Mesin Fakultas Teknik Universitas Jember
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Effect of Biodiesel B100 and Ethanol Blends on the Performance of Small Diesel Engine Firdiansyah, Alfian; Ilminnafik, Nasrul; Triono, Agus; Kustanto, Muh Nurkoyim
International Journal of Mechanical Engineering Technologies and Applications Vol. 2 No. 2 (2021)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2021.002.02.3

Abstract

A small diesel engine is a machine that has high efficiency but causes a high level of pollution. The most widely used fuel so far is fossil energy which is unrenewable energy. The fruit of the Calophyllum inophyllum plant has great potential to be developed as alternative energy for small diesel engines. In this study, the test fuel used was D100, B100, E5, E10, and E15. The small engine diesel used TG-R180 Diesel with a compression ratio of 20:1 at engine turns 1500, 1800, 2100, and 2400 rpm, and the braking load at a constant prony disc brake is 1,5 kg/cm2. The result of the study using E10 fuel can improve engine performance and can reduce the opacity of the exhaust gas. The highest power in the D100 fuel at 2100 rpm is 8,06 PS. The highest thermal efficiency of E10 fuel is 50,29%. The use of Calophyllum inophyllum biodiesel (B100) can reduce exhaust gas opacity in small diesel engines when compared to the use of D100. E10 fuel has the lowest exhaust gas opacity rate of 4,1%.
Study of the Effect of NaOH Type Alkaline Catalyst on the Physicochemical Characteristics of Used Cooking Oil Biodiesel Dani, Dani Hari Tunggal Prasetiyo; Ilminnafik, Nasrul; Trifiananto, Muhammad; Sanata, Andi; Muhammad, Alief
Jurnal Keteknikan Pertanian Vol. 12 No. 3 (2024): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.012.3.393-408

Abstract

Dependence on fossil fuels causes significant environmental damage and increases costs and scarcity in the future. To overcome this problem, a transition to renewable energy is needed, one of which is biodiesel which can be obtained from used cooking oil. This study aims to convert used cooking oil that cannot be reused into biodiesel products. Biodiesel synthesis can be carried out by the transesterification process, using NaOH catalyst with concentration variations of 0.5%, 0.75%, 1%, 1.25%, and 1.5% of the total mass of oil. The test parameters are calorific value, density, viscosity and flash point as well as yield on used cooking oil biodiesel products. The test results show that the use of a catalyst concentration of 1% produces more optimal density, viscosity, and calorific value and flash point. Each value is 0.859 g / cm³, 2.34 cSt, 10,356 cal / g, and 139°C. However, the use of a catalyst concentration of 0.5% shows that the biodiesel product is less than optimal. This can be shown by the highest density, viscosity and flash point values of the catalyst concentration variations used. Each value is 0.88 g/cm3, 3.16 cSt and 178°C, while the calorific value is also low with a value of 9,689 cal/g. However, when viewed from the yield, the catalyst concentration of 0.5% produces the highest value of all catalyst concentration variations used with a value of 88%.
Impact of excess air on the performance and emissions of an ethanol-fueled si engine Ilminnafik, Nasrul; Saputra, Toni Haikal; Rozy Hentihu, Muhammad Fahrur
Jurnal Polimesin Vol 23, No 1 (2025): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i1.6228

Abstract

Ethanol-blended fuels, such as E60 (60% ethanol and 40% gasoline), have gained interest as an alternative to conventional fuels due to their potential to improve engine performance and reduce emissions. However, the effect of excess air on combustion characteristics remains a key factor in optimizing efficiency. This study investigates the impact of varying excess air levels on the performance and emissions of a 100 cc four-stroke spark ignition (SI) engine fueled with E60. The engine was connected to a Prony brake for performance testing, while exhaust emissions were analyzed using a gas analyzer. Results indicate that an excess air level of 22 L/m produced the highest power output (2.48 kW at 1600 rpm) and maximum torque (15.38 N·m at 1200 rpm). Additionally, at 22 L/m, the lowest fuel consumption of 0.110 kg/kWh and the lowest CO emissions were observed. However, at 23 L/m, a decline in performance was noted, likely due to incomplete combustion. The findings suggest that optimizing excess air in ethanol-fueled SI engines enhances performance and minimizes emissions. These insights contribute to the development of efficient combustion strategies for ethanol-based alternative fuels in small-scale transportation applications.
Effects of modified intake surface to gasoline engine performance with the use of LPG Ilminnafik, Nasrul; Triono, Agus; Ali, Reynaldi Akbar; Mahmud, Rizal; Prasetiyo, Dani Hari Tunggal
Jurnal Polimesin Vol 22, No 3 (2024): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i3.4008

Abstract

Indonesia observes a yearly rise in motor vehicle possession. Failure to consider alternate fuels in these trends may result in the depletion of gasoline. Out of the potential alternatives, Liquified Petroleum Gas (LPG) appears to be the most favorable. The sole issue lies in the elevated engine temperature and subsequent decrease in performance caused by its utilization. To address this vulnerability, it is advisable to employ a cooling injection method, such as water injection. Nevertheless, the rise in exhaust emissions linked to water injection highlights the necessity for optimization. This study aims to optimize coolant injection systems by conducting experiments with different modifications, such as conventional intake surfaces, dimple intake surfaces with gaps, and dimple intake surfaces without gaps. The gapless dimple inlet surface demonstrates superior performance in terms of exhaust emissions, power, and torque compared to both conventional inlet surfaces and slotted dimple inlet surfaces
DIVERSIFIKASI USAHA KELOMPOK PENJUAL DURIAN MELALUI OLAHAN LIMBAH BUAH DURIAN Sa'diyah, Halimatus; Hadi, Alfian Futuhul; Ilminnafik, Nasrul
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 2 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i2.550-558

Abstract

Desa Pakusari Krajan di Kabupaten Jember memiliki pusat penjualan durian berupa deretan kios-kios penjual buah durian segar yang menetap. Saat ini, banyak pembeli durian yang menikmati buah durian di kios penjual, mengakibatkan banyak limbah durian menumpuk berupa biji dan kulit, sehingga lingkungan menjadi kotor. Para penjual durian, sebagi mitra dalam kegiatan ini, hanya menjual satu macam produk saja, belum memiliki pengetahuan untuk meningkatkan usaha dagangnya, serta belum ada managemen usaha. Kegiatan pengabdian masyarakat ini bertujuan menyelesaikan permasalahn tersebut melalui pemanfaatan limbah durian menjadi olahan produk makanan dan minuman, serta pengaplikasian mesin teknologi tepat guna untuk membantu proses pengolahan tersebut. Adanya produk olahan limbah durian tersebut dapat menganekaragamkan produk yang dijual para penjual durian. Tujuan lain yang ingin dicapai adalah memberi pengetahuan mitra tentang managemen usaha. Metode yang digunakan adalah penyuluhan dan pelatihan, praktek pengolahan maupun praktek penggunaan teknologi tepat guna dalam proses produksi. Mitra mengikuti kegiatan dengan penuh antusias. Semua program yang telah dilaksanakan diiukuti dengan baik oleh mitra, diharapkan memberikan pengaruh positif bagi mitra baik dalam, aspek pengembangan ipteks, ekonomi maupun lingkungan. Kegiatan ini mendorong adanya diversifikasi produk, dimana mitra menjual olahan limbah durian selain durian segar yang biasa mereka jual. Lingkungan juga menjadi lebih bersih bebas limbah durian. Mitra juga leebih memahami pentingnya managemen usaha, antara lain melalui pembukuan kas sederhana.
Pengaruh Variasi Temperatur Hidrolisis dan Waktu Fermentasi Terhadap Kadar Bioetanol Menggunakan Bahan Baku Limbah Kulit Singkong Cahyadi, Tedi Setiawan; Ilminnafik, Nasrul; Darsin, Mahros; Sanata, Andi; Hermawan, Yuni
Jurnal Locus Penelitian dan Pengabdian Vol. 4 No. 12 (2025): JURNAL LOCUS: Penelitian dan Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v4i12.4693

Abstract

Pertumbuhan penduduk meningkatkan kebutuhan akan bahan bakar. Hal ini berbanding terbalik dengan penurunan ketersediaan bahan bakar fosil. Oleh karena itu, pemerintah Indonesia bertujuan untuk meningkatkan bauran sumber energi terbarukan. Salah satu kemungkinannya adalah memanfaatkan limbah kulit singkong untuk diolah menjadi bioetanol. Salah satu langkah terpenting terfokus pada proses hidrolisis dan fermentasi. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh suhu hidrolisis dan waktu fermentasi terhadap hasil kadar etanol dengan melakukan pengulangan sebanyak 3 kali. Penelitian ini menggunakan variasi suhu hidrolisis dan waktu fermentasi dengan variasi suhu 90°C, 95°C, 100°C dan waktu fermentasi selama 3 hari, 5 hari dan 7 hari dengan melakukan pengulangan sebanyak 3 kali. Dari hasil penelitian hidrolisis dengan kadar gula reduksi tertinggi diperoleh pada sampel suhu 100°C mendapatkan nilai rata-rata kadar brix sebesar 31°Brix. Sedangkan kadar etanol tertinggi diperoleh pada suhu 100°C dengan waktu 7 hari pengulangan ke 3 memperoleh nilai sebesar 58% kadar etanol. Kesimpulan penelitian ini adalah peningkatan suhu hidrolisis dapat menaikan kadar gula reduksi karena mempercepat laju reaksi hidrolisis. Selain itu juga dapat membantu penguraian lignoselulosa karena lebih mudah terpapar enzim dan pengaruh dari waktu fermentasi semakin lama waktu fermentasi yang digunakan semakin tinggi pula kadar etanolnya karena ragi memiliki waktu lebih banyak untuk mengubah gula (glukosa, fruktosa) hasil hidrolisis kulit singkong menjadi etanol dan CO?.
Training on Solar Cell Technology as a Solar Power Plant in Graha Citra Mas Housing Estate Kaliwates, Jember Muhammad Nurkoyim; Nasrul Ilminnafik; Muhammad Dimyati Nashrullah; Muhammad Izzuddin Al Haq
RESPINARIA : Jurnal Pengabdian Kepada Masyarakat Vol. 1 No. 1 (2024): June 2024
Publisher : PT Katersi Minar Permata

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

Abstract

Energy needs are increasing but on the other hand the availability of petroleum reserves as conventional energy is running low, this forces humans to look for alternatives to energy. Indonesia as a country with a relatively good tropical climate in the duration of the sun shines. This matter is a potential to answer the need for alternative energy to replace petroleum, namely solar light or the sun. By utilizing solar panels, solar cells simply consist of a connection of p and n type semiconductor materials which when exposed to sunlight will occur electron flow, from this flow is referred to as electricity or converting solar radiation into electricity. In an effort to educate and serve a number of lecturers from the Department of Mechanical Engineering, University of Jember, held a service located in RT 04 / RW021 Graha Citra Mas Housing, Tegal Besar Village, Kaliwates District, Jember Regency, with the aim of understanding the community regarding Solar Cell Technology as a Solar Power Plant (PLTS). The service runs with the delivery of material and continued by emphasizing discussion and question and answer. With the results of the service felt illustrated and enlightened from the material and answers that the speaker conveyed.
Experimental Investigation of the Effect of Temperature on Biodiesel Production from Used Cooking Oil Prasetiyo, Dani Hari Tunggal; Ilminnafik, Nasrul; Sanata, Andi; Sholahuddin, Imam; Arbiantara, Hari; Dwilaksana, Dedi
Journal of Earth Energy Science, Engineering, and Technology Vol. 9 No. 1 (2026): JEESET VOL. 9 NO. 1 2026
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/2am28c76

Abstract

Used cooking oil is a waste product with great potential as a raw material for biodiesel production through transesterification. This study was conducted to determine the effect of transesterification reaction temperature on biodiesel yield and quality. The biodiesel production process includes a degumming step to remove gums by adding 1% H₃PO₄. This is then followed by transesterification using 1% NaOH as the catalyst, an oil-to-methanol ratio of 1:0.5, a stirring speed of 300 rpm, and a reaction time of 60 minutes. The transesterification reaction temperatures were 40°C, 50°C, 60°C, and 70°C. The results showed that the reaction temperature significantly affected the yield and physical quality of biodiesel. The highest yield was 85.85% at 40°C, while the lowest was 80.37% at 70°C. The maximum viscosity was observed at 60°C (6.0 cSt), and the minimum at 70°C (5.71 cSt). The highest density was 0.8620 g/mL at 50 °C, and the lowest was 0.8607 g/mL at 40 °C. The highest flash point was 40°C at 173.27°C, and the lowest was 70°C at 164.97°C. The results showed that the biodiesel produced met the quality standards of SNI 7182:2015, thus supporting its suitability as an alternative fuel derived from used cooking oil.
Potensi Bioenergi Dari Pengolahan Limbah Peternakan Dan Sampah Organik Di Kabupaten Banyuwangi Kartini, Audiananti Meganandi; Ilminnafik, Nasrul
Jurnal Kendali Teknik dan Sains Vol. 2 No. 2 (2024): April: Jurnal Kendali Teknik dan Sains
Publisher : International Forum of Researchers and Lecturers

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59581/jkts-widyakarya.v2i1.2720

Abstract

Banyuwangi Regency has an area of ​​5,782.5 km2, which is divided into 25 sub-districts and 217 villages/sub-districts with a population in 2021 reaching approximately 1,718,462 people. Based on BPS data from Banyuwangi Regency in 2020, it shows that the total livestock population is 3,130,769. These types of livestock consist of four-legged animals such as cows, buffalo, horses, goats, sheep, pigs and poultry such as chickens. The aim of this research is to find out the potential electrical energy obtained from livestock manure and to measure and identify the potential electrical energy from waste processing which is developed into a biomass power plant in Banyuwangi Regency. The research method in writing this article is descriptive quantitative, the data was obtained from literature studies. Biogas potential from the livestock sector in Banyuwangi Regency is considered high with a total of 297,680 m3 of biogas that can be produced. Meanwhile, the total weight of waste generated in Banyuwangi Regency is 572,261 kg/day. So it was found that the total bioenergy produced from livestock manure in Banyuwangi Regency reached 297,681 m3, while the total electrical energy produced from organic waste in Banyuwangi Regency reached 414,061 kWh per day.  
Pelatihan Perawatan Solar Cell Untuk Menjaga Unjuk Kerja Pembangkit Listrik Tenga Surya (PLTS) Muh. Nurkoyim Kustanto; Nasrul Ilminnafik; Muhammad Dimyati Nashrullah; Haidzar Nurdiansyah
Journal of Community Development Vol. 5 No. 1 (2024): August
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/comdev.v5i1.201

Abstract

The increasing demand for energy and the depletion of oil reserves are forcing humans to seek alternative energy sources. Therefore, the need for alternative electrical energy sources arises, namely, by utilizing solar panels. The importance of understanding how solar panels work and their maintenance becomes a determining factor in ensuring the optimal performance of Solar Photovoltaic (PV) Systems. Lack of knowledge and awareness about maintenance can result in decreased efficiency and lifespan of solar panels. Users of Solar Photovoltaic (PV) Systems are also expected to understand its maintenance procedures. Thus, the implementation of this community service activity aims to educate the public and enable them to maintain Solar Cells as Solar Photovoltaic (PV) Systems. This activity is carried out by providing direct training on PV system maintenance, both theoretically and practically. The impact of this community service activity is that the community can understand and maintain Solar Cells as Solar Photovoltaic (PV) Systems, as evidenced by the evaluation results where the understanding of the training participants falls into the category of very knowledgeable, which is 80.88%.
Co-Authors Achmad Aminudin Achmad Rifqi In'Amullah Adhe Reza Firmansyah Adhika Widyaparaga Agus Triono Ahmad Adib Rosadi Ahmad Adib Rosyadi Ahmad Iqbal Fawaid Ahmad Syuhri Ahmad Zainuri Ainun Huda Gimnastiar Alfariz, Mohammad Rifqy Alfian Futuhul Hadi Alfons Erick Perkasa Alfons Erick Perkasa, Alfons Erick Ali, Reynaldi Akbar Alief Muhammad Aliyansyah, Berly Amirul Yahya Andi Sanata Andi Sanata Apip Amrullah Arifin, Moch Miftahul Aris Zainul Muttaqin As’adi GA, As’adi As’adi GA Atlanta Iwananda Bekti Palupi Cahya Alief Prasetyo Cahyadi, Tedi Setiawan Cahyani, Elisna Tirta Danang Yudistiro Dani Hari Tunggal Prasetiyo Dedi Dwilaksana Deny Tomy Andrianto Deny tomy andrianto Digdo Listyadi, Digdo Dimas Endrawan, Putra Djoko Wahyudi Dony Perdana Doohan Taqdissillah Dwi Djumhariyanto Faiz Firdausi Fiqih Muhammad Firdiansyah, Alfian Freitas, Domingos de Sousa Frenico A.O. Fx. Kristianta Gaguk Jatisukamto Haidzar Nurdiansyah Halimatus Sa'diyah Hari Arbiantara Basuki Hary Sutjahjono Ibnu, Muhammad Khadafi Imam Rudi Sugara Imam Sholahuddin Imam Sholahuddin Indro Pranoto Intan Hardiatama Ivan Bagus Sanjaya Junus, Sallahudin K.W., Robertoes Koekoeh Kartini, Audiananti Meganandi Kristianta, Franciscus Xaverius Kristianta, Fransiscus Xaverius Kurniawan, Eva Luh Putu Ratna Sundari Lukman Hakim Lukman Hakim Lukman Hakim M Katibi Vanhas M. Agung Fauzi M. Agung Fauzi, M. Agung M. Fahrur Rozy Hentihu M. Fathuddin Noor, M. Fathuddin M. Katibi Vanhas Mahmud, Rizal Mahros Darsin Masruri Wardhana Misto Moch. Rizal A. Y. Moch. Rizal A. Y., Moch. Mochamad Asrofi Mochamad Edoward Ramadhan Moh. Nurkoyim Moh. Nurkoyim Kustanto Mubiyn, Shidqi Nur Muh. Nurkoyim, Kustanto Muhammad Dimyati Nashrullah Muhammad Izzuddin Al Haq Muhammad Lutfi Azis Muhammad Nur Cahyo Hidayat Nasrullah Muhammad Nurkoyim Nofal Kharis Nofal Kharis Kharis Nugraha, Raafi Aditya Nur Widodo Nurkoyim Kustanto, Muh Puji Kristianto Putra Dimas Endrawan Putra, Dimas Endrawan Qoyinul Amin Rika Dwi Hidayatul Qoryah Rima Zidni Karimatan Nisa Risco Eka Firdausah Rizal Mahmud Sa'diyah, Halimatus Sa’diyah, Halimatus Salahuddin Junus Santoso Mulyadi Saputra, Toni Haikal Setyo Pambudi Setyo Pambudi Solahuddin, Imam Sumarji Suyitno Syahriza, Mochamad Rifki Syuhri, Skriptyan N.H. Syuhri, Skriptyan Noor Hidayatullah Tanu Alifuddin D. S Trifiananto, Muhammad Welayaturromadhona Widyaningrum Febriolita wigo ardi winarko Wisnu Kuncoro yudan priyo anggono Yuni Hermawan