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All Journal Jurnal Keteknikan Pertanian Transmisi Bulletin of Chemical Reaction Engineering & Catalysis ROTOR: JURNAL ILMIAH TEKNIK MESIN Turbo : Jurnal Program Studi Teknik Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Jurnal Inotera ABDIMAS SILIWANGI JASIEK (Jurnal Aplikasi Sains, Informasi, Elektronika dan Komputer) CERMIN: Jurnal Penelitian INTEGRITAS : Jurnal Pengabdian J-Proteksion: Jurnal Kajian Ilmiah dan Teknologi Teknik Mesin TEKIBA : Jurnal Teknologi dan Pengabdian Masyarakat Empowerment Society Mechanical Engineering for Society and Industry Journal of Earth Energy Science, Engineering, and Technology INSAN CENDEKIA : Jurnal Pengabdian Kepada Masyarakat Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Polimesin Journal Electric Field
Alief Muhammad
Universitas Panca Marga
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Transportation Other

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The Effect of Biogas Purification Process Using Calcium Oxide-Based Sorbents on the Diffusion Flame Combustion Characteristics Dani Hari Tunggal Prasetiyo; Djoko Wahyudi; Alief Muhammad
Journal of Earth Energy Science, Engineering, and Technology Vol. 4 No. 3 (2021): JEESET VOL. 4 NO. 3 2021
Publisher : Penerbitan Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.257 KB) | DOI: 10.25105/jeeset.v4i3.9712

Abstract

Biogas is an alternative energy source that could solve two problems at once, the problem of environmentally friendly energy needs and the problem of waste treatment. One of the sources of biogas is obtained from anaerobic bacterial fermentation of cow dung waste. The biogas fermentation process produces impurities such as carbon dioxide (CO2) as a combustion inhibitor. Carbon dioxide will inhibit the combustion reaction, resulting in incomplete combustion. The biogas purification process is needed to reduce the amount of carbon dioxide in the biogas. The purification process is carried out using an absorbent compound of calcium oxide (CaO) to bind carbon dioxide contained in the biogas. Thus, the purpose of this study was to analyze the effect of the biogas purification process using calcium oxide on the characteristics of the diffusion flame produced by combustion. The research was conducted experimentally using the physicochemical-absorption method of purification by flowing biogas through a purificator device that contained a purification solution. After passing through the purification solution, the biogas was regulated at a fuel flow rate of 3 liters/min and then proceed to the bunsen burner. The results showed that purification affected increasing the characteristics of the diffusion flame combustion due to the reduced amount of carbon dioxide in the biogas. This is indicated by increasing the purification molarity, it also increases the flame speed of combustion and the flame angle, as well as a decrease in the flame height.
Pengaruh Proses Transesterifikasi Menggunakan Katalis KOH terhadap Karakteristik Biodiesel dari Biji Sterculia Foetida Sebagai Bahan Bakar Alternatif Dani Hari Tunggal Prasetiyo Dani; Nasrul Ilminnafik; Alief Muhammad
Jurnal Keteknikan Pertanian Vol. 10 No. 3 (2022): Desember 2022
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.010.3.253-267

Abstract

Research on renewable energy has become an interesting topic in the era towards industry 5.0. This was because the world's energy needs continue to increase every year, especially during the industrial revolution. The use of biodiesel as an alternative fuel began to be developed along with the emergence of policies for adding biofuels to fossil fuels. Kepuh oil has the opportunity to be developed as an alternative fuel as biodiesel feedstock. This was because kepuh oil contains triglycerides. The purpose of this study was to determine the effect of catalyst concentration on density, viscosity and heating value. The catalyst used to produce biodiesel was KOH. The concentration of the catalyst used was K-0.8%; K-0.9%; K-1.0%; K-1.1% and K-1.2%. Biodiesel production was carried out at atemperature of 600C for 1 hour in the esterification and transesterification processes at the same temperature and time. The best production of kepuh biodiesel was obtained at acatalyst concentration of K-0.8% with a density value of 0.83 gr/ml, a viscosity of 2.8 cstand a heating value of 9,847 cal/gr, while the best results were obtained from mixing purediesel with kepuh biodiesel at a catalyst concentration K-0.8%. The test resulted in adensity value of 0.82 gr/ml, a viscosity of 2.24 cst, and a heating value of 10,658 cal/gr. Thehighest yield was 77.3% at 1.2% catalyst concentration
In Search of Magnetic Properties of Samarium Cobalt (Sm2Co17) within a Low-Temperature Sintering Process Poppy Puspitasari; A. Muhammad; A. A. Permanasari; T. Pasang; S. M. S. N. S. Zahari; N. A. Ahmad
Bulletin of Chemical Reaction Engineering & Catalysis 2021: BCREC Volume 16 Issue 3 Year 2021 (September 2021)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.16.3.10482.517-524

Abstract

Samarium cobalt is known as super high density magnetic material with large magnetic anisotropy energy. Samarium–cobalt exhibits manipulative magnetic properties as a rare-earth material which has different properties in a low sintering temperature. It is therefore of paramount importance to investigate samarium cobalt (Sm2Co17) magnetic properties in the low temperature sintering condition. Sm2Co17, which is utilized in this research, is synthesized via the sol–gel process at sintering temperatures of 400, 500, and 600 °C. Subsequently, the crystallites indicate the formation of a single-phase Sm2Co17 on all the samples in all temperature variations. Moreover, the peaks in the X-ray diffraction analysis of crystallite sizes calculated using the Scherrer equation are 17.730, 15.197, and 13.296 nm at 400, 500, and 600 °C. Through scanning electron microscopy, the particles are found to be relatively large and agglomerated, with average sizes of 143.65, 168.78, and 237.26 nm. The functional groups are also analyzed via Fourier-transform infrared spectroscopy, which results in the appearance of several bonds in the samples, for example, alkyl halides, alkanes, and esters with aromatic functional groups on the fingerprint area and alkynes, alkyl halides, and alcohol functional groups at a wavelength of above 1500 cm. The test results of the magnetic properties using vibrating-sample magnetometer (VSM) revealed high coercivity and retentivity in the samples sintered at 400 °C. However, the highest saturation occurs in the samples sintered at 600 ℃. At a low sintering temperature (below 1000 °C), samarium cobalt shows as the soft magnetic material. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0). 
Sistem Monitoring dan Manajemen Energi pada Pembangkit Hybrid PLTS, PLTB, dan PLN berbasis Internet of Things Hartawan Abdillah; Tamam Asrori; Mas Ahmad Baihaqi; Dani Hari Tunggal Prasetyo; Alief Muhammad
JASIEK (Jurnal Aplikasi Sains, Informasi, Elektronika dan Komputer) Vol. 5 No. 2 (2023): Desember
Publisher : Universitas Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jasiek.v5i2.10920

Abstract

Topologi baru dalam hybrid yaitu kedua pembangkit yang mengoptimalkan energi listrik yang dibangkitkan serta dapat termonitoring melalui Internet of Things (IoT). Dalam sistem pembangkit hybrid, IoT dapat digunakan untuk mengumpulkan data tentang produksi energi listrik dari setiap sumber seperti panel surya, turbin angin dan PLN. Data ini dapat dianalisis secara real-time untuk memantau kinerja sistem dan meningkatkan efisiensi energi. Hasil penelitian menunjukkan parameter intensitas cahaya matahari, temperatur dan kecepatan angin sangat berpengaruh pada daya output dari PLTS dan PLTB sedangkan sumber PLN digunakan ketika daya dari kedua pembangkit dalam keadaan blackout.
Investigating the effects of partitioning temperature fluctuations on the mechanical properties of ASTM A36 carbon steel using Q-P-T heat treatment: an experimental study Alief Muhammad; Mochamad Fani Nur Umri; Muhammad Fathuddin Noor; Dani Hari Tunggal Prasetyo; Indah Noor Dwi Kusuma Dewi; Angga Prasmana; Mas Ahmad Baihaqi; Hartawan Abdillah
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.v22i3.5007

Abstract

In the continuum of time and technological advancement, the use of metals, specifically carbon steel, has significantly increased as primary materials in various operational and industrial domains, including tool fabrication and automotive components. To meet the evolving demands of industries, precise heat treatment processes have been developed to enhance the metallic properties. This study specifically focused on the application of the Quenching-Partitioning-Tempering (Q-P-T) method to ASTM A36 steel. The study investigated different partitioning temperatures, namely 300℃, 350℃, and 400℃, with 15-minute intervals. A comprehensive set of mechanical tests, including hardness, tensile, and microstructural analyses, were conducted to assess the response of the material to the treatment. The results reveal significant findings: a partitioning temperature of 300℃ yields the highest hardness value of 164 Vickers Hardness Number (VHN). Furthermore, the tensile tests demonstrate that a partitioning temperature of 300℃ is optimal, achieving a maximum stress value of 515.73 MPa. Conversely, a partitioning temperature of 400℃ exhibits the highest strain value at 21.08% and the highest elastic modulus value at 11.47 GPa. Microstructural evaluations highlighted the presence of pearlite and ferrite phases, with the partitioning temperature of 300°C displaying the highest proportion of pearlite phase at 38.5%. This meticulous investigation expands our understanding of metallurgy and underscores the intricate relationship between partitioning temperatures and the mechanical properties of ASTM A36 steel. It provides valuable insights for material design and application methodologies and facilitates advancements in industrial practices
Analisis Dampak Pembebanan RLC terhadap Kualitas Daya dan Efisiensi Energi pada Pembangkit Listrik Tenaga Surya 100 WP On-Grid Mas Ahmad Baihaqi; Eva Kurnia Yulyawan; Hartawan Abdillah; Adi Mulyadi; Putro Adi Pamungkas; Alief Muhammad; Dani Hari Tunggal Prasettio
JASIEK (Jurnal Aplikasi Sains, Informasi, Elektronika dan Komputer) Vol. 6 No. 1 (2024): Juni 2024
Publisher : Universitas Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jasiek.v6i1.11267

Abstract

Pembangkit Listrik Tenaga Surya (PLTS) merupakan teknologi energi ramah lingkungan dalam bidang energi, yang memanfaatkan cahaya matahari sebagai sumber daya primer. Dua sistem utama PLTS adalah Off Grid dan On Grid. PLTS On Grid, yang menjadi fokus dari penelitian ini, memanfaatkan cahaya matahari di siang hari dan langsung mengkonversinya menjadi energi listrik yang dapat digunakan untuk mengurangi konsumsi daya dari PLN. Proses konversi ini melibatkan penggunaan microinverter grid untuk mentransformasi listrik DC menjadi AC, yang kemudian disambungkan ke Grid PLN.Dalam penerapannya, jenis beban memiliki peran penting dalam kinerja sistem PLTS. Tiga jenis beban utama yaitu resistif (dilambangkan oleh lampu pijar), induktif (dilambangkan oleh pompa aquarium), dan kapasitif (dilambangkan oleh kipas angin) semua beban RLC ini dianalisis dalam penelitian ini. Data dikumpulkan dengan menggunakan masing-masing beban secara terpisah, kombinasi dua jenis beban, serta kombinasi ketiga-tiganya.Hasilnya menunjukkan bahwa beban induktif memiliki nilai cosphi terendah yakni 0,19; kombinasi resistif dan induktif memberikan nilai cosphi sebesar 0,67; sedangkan gabungan ketiga-tiganya memberikan nilai cosphi tertinggi yaitu 0,98. Ini menunjukkan bahwa variasi dan jenis beban memiliki dampak signifikan pada nilai cosphi dan konsumsi daya secara keseluruhan.Penelitian ini memberikan pemahaman baru tentang bagaimana pembebanan RLC mempengaruhi efisiensi sistem PLTS On Grid dan bagaimana berbagai jenis beban dapat dioptimalkan untuk meningkatkan kinerja sistem tersebut
Mobile Augmented Reality in Education : Recognition of Electronic Component / classroom learning technology / practical learning technology Hartawan Abdillah; Mas Ahmad Baihaqi; Dani Hari Tunggal Prasetiyo; Alief Muhammad
JEEMECS (Journal of Electrical Engineering, Mechatronic and Computer Science) Vol 7, No 1 (2024): February 2024
Publisher : Merdeka Malang University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jeemecs.v7i1.10167

Abstract

The introduction of components in the control system practicum utilizes Augmented Reality using cellular so that students know the types of PLC components that are displayed on cellular screens (smartphones). In this case a combination of real world objects such as PLC (Programable Logic Control) components and virtual objects in the form of text, animation, 3D models or computer-generated videos that will be displayed on smartphone screens so that students feel virtual objects in the practicum room. The test results from the detection of the electronic component objects tested included testing the distance, light intensity and covering some objects, the results of the analysis were almost entirely successful in detecting the object. Except in the dark light detection condition, the intensity cannot be determined. This is because, in a marker-based tracking method, identifying the marker pattern is the most important point. In dark conditions, the pattern obtained will be less than optimal so that in the matching process there will be marker errors, or even objects not identified as in the current experiment
Uji Karakteristik Nyala Api Menggunakan Metode Pembakaran Droplet Pada Bahan Bakar Diesel Dengan Penambahan Biodiesel Kesambi Prasetiyo, Dani Hari Tunggal; Abdillah, Hartawan; Wahyudi, Djoko; Muhammad, Alief; Baihaqi, Mas Ahmad
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 2 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i2.2805

Abstract

Population growth and rapid technological developments cause the need for energy to increase. Energy needs are more dominated by fossil sources, especially petroleum. However, the level of utilization of energy from fossil sources does not allow it to last long, this is because fossil energy sources have limitations. Therefore it is necessary to use alternative energy sources, one of which is biodiesel. Biodiesel can be obtained from plants. One type of plant that can produce biodiesel is the kesambi plant. However, before it is mass-produced and used in transportation and industrial machinery, it needs to be tested first. One of them is the combustion test with the droplet method. In this study, a droplet combustion test was carried out using diesel fuel by mixing kesambi biodiesel. The results showed that pure diesel fuel produced the highest temperature and the fastest ignition delay time. The high flame on diesel fuel is also the highest. However, the duration of the ignition lies in the composition of pure biodiesel fuel without mixture.
Pengaruh Ukuran Mesh Terhadap Karakteristik Fisik dan Kimia Biobriket Biji Kesambi Prasetiyo, Dani Hari Tunggal; Muhammad, Alief; Dewi, Indah Noor Dwi Kusuma; Supraptiningsih, Linda Kurnia; Achmadin, Wahyu Nur
CERMIN: Jurnal Penelitian Vol 7 No 2 (2023): Agustus - Desember
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat - Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/cermin_unars.v7i2.3626

Abstract

Kebutuhan energi diperkirakan terus meningkat seiring dengan meningkatnya jumlah penduduk dan kemajuan teknologi. Salah satu bentuk energi yang bersumber dari fosil adalah batu bara. Batu bara berasal dari sisa pelapukan makhluk hidup, memiliki keterbatasan dari jumlah yang tersedia di alam. Oleh sebab itu, diperlukan upaya untuk mencari dan meneliti energi alternatif pengganti batu bara. Salah satu energi alternatif pengganti batu bara adalah biobriket. Biobriket merupakan bahan bakar alternatif yang berasal dari bahan nabati. Salah satu bahan nabati yang dapat digunakan sebagai bahan baku biobriket adalah biji dari buah kesambi. Pada penelitian ini, sintesis biobriket dilakukan dengan memvariasikan ukuran bahan baku. Ukuran mesh sebesar 20, 30 dan 40. Penelitian dilakukan untuk mengetahui nilai kalor, kadar air dan kadar abu yang dihasilkan. Hasil pengujian menunjukkan bahwa nilai kalor tertinggi sebesar 5.578,36 cal/g dengan menggunakan ukuran mesh 40. Kadar air tertinggi terdapat pada ukuran mesh 20 dengan nilai sebesar 11,26% sedangkan kadar abu tertinggi sebesar 0,58% dengan ukuran mesh 20.
PENGARUH NILAI RON PADA BAHAN BAKAR JENIS BENSIN TERHADAP EMISI GAS BUANG Prasetiyo, Dani Hari Tunggal; Muhammad, Alief; Baihaqi, Mas Ahmad; Abdillah, Hartawan; Supraptiningsih, Linda Kurnia
CERMIN: Jurnal Penelitian Vol 6 No 2 (2022): DESEMBER
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat - Universitas Abdurachman Saleh Situbondo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36841/cermin_unars.v6i2.2446

Abstract

Jumlah populasi kendaraan yang semakin meningkat menyebabkan pencemaran lingkungan semakin meningkat. Salah satu alat transportasi yang paling dominan adalah sepeda motor. Sepeda motor menggunakan bahan bakar jenis bensin sebagai sumber energi untuk menggerakkan elemen mesin. Bahan bakar minyak jenis bensin di Indonesia terdiri dari beberapa produk seperti premium, pertalite, pertamax dan pertamax turbo. Bahan bakar bensin yang beredar di pasaran dapat dibedakan dari nilai RON pada masing-masing jenis bahan bakar. Namun, konsumen jarang sekali memperhatikan manfaat penggunaan nilai RON pada kendaraan dan dampak yang dihasilkan pada lingkungan. Oleh karena itu diperlukan penelitian tentang pengaruh RON terhadap emisi gas buang dan konsumsi bahan bakar. Uji emisi gas buang dilakukan dengan menggunakan gas analizer untuk mengetahui nilai HC, CO, CO2 dan O2. Pengujian dilakukan dengan memvariasikan putaran mesin (rpm). Hasil pengujian menghasilkan kadar HC terendah sebesar 43 ppm, CO terendah 0,31%, CO2 sebesar 18,8% pada putaran mesin 8.000 rpm sedangkan O2 tertinggi sebesar 21,03% pada putaran mesin 1.000 rpm dengan menggunakan pertamax turbo.
Co-Authors A. A. Permanasari Abdillah, Hartawan Abdul Basit Abdul Basit Achmadin, Wahyu Nur Adi Mulyadi Agung Fitrahadi Ahmad Fauzan Ahmad Iskandar Rahmansyah Ahmad Izzuddin Akbar Anugrah Ikhsani Andi Sanata Andrianata, Mufid Andrie Angga Prasmana Aprillia, Wulan Asrori, Tamam Audiananti Meganandi Kartini Citra Suardi Dani Hari Tunggal Prasetiyo Dewi Izzatus Tsamroh Dewi, Indah Noor Dwi Kusuma Dini, Joko Sugiono Eka Prasetya Djoko Wahyudi Djoko Wahyudi Djoko Wahyudi Djoko Wahyudi Eva Kurnia Yulyawan Fathuddin Noor, Muhammad GAMMA ADITYA RAHARDI Hartawan Abdillah Helsinky, Mava Nurhaliza Hendra, Joni Hermanto Hermanto Hermanto Hermawan, Nanang Indah Noor Dwi Kusuma Dewi Indah Noor Dwi Kusuma Dewi Indayani, Sulis Dyah Candra Iswardani, Kurnia Isyuniandri, Dzaky Jibril Maulana Joni Hendra Kurniawan, Tri Nanda Indra Linda Kurnia Linda Kurnia Supraptiningsih Luthfi, Nur Ahmad Mas Ahmad Baihaqi Mas Ahmad Baihaqi Mas, Ahmad Baihaqi Mochamad Fani Nur Umri Mochammad Rizky Kurniawan Muhammad Muhammad Zainal Roisul Amin MutindaTeguh Widayanto N. A. Ahmad Nafis, Raihan Nasrul Ilminnafik Nisak, Indani Khoirun Noor, Muhammad Fathuddin Prasetiyo, Dani Hari Tuggal Putri, Salsabillah Widya Eka Putro Adi Pamungkas Rr. Poppy Puspitasari S. M. S. N. S. Zahari Saeful Bakhri Setyawati, Ika Setyo Pambudi Siti Masluha Suharsono, Judi T. Pasang Tamam Asrori Tamam Asrori Trifiananto, Muhammad Triyastutik, Annisa Ayu Wahyu Nur Achmadin Wahyu Nur Achmadin Wahyu Nur Achmadin Winda Ayu Mundari Yazirin, Cepi Yulyawan, Eva Kurnia