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All Journal Rotasi Jurnal Keteknikan Pertanian Bulletin of Chemical Reaction Engineering & Catalysis POROS TEKNIK Journal of Science and Applicative Technology Angkasa: Jurnal Ilmiah Bidang Teknologi Jurnal Elemen Jurnal IMPACT: Implementation and Action Infotekmesin Scientific Journal of Mechanical Engineering Kinematika Buletin Profesi Insinyur JTAM ROTARY International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jurnal Sains Teknologi dalam Pemberdayaan Masyarakat Journal of Mechanical Engineering, Science, and Innovation Jurnal Pengabdian Ilung (Inovasi Lahan Basah Unggul) International Journal of Innovation in Mechanical Engineering and Advanced Materials Bulletin of Chemical Reaction Engineering & Catalysis
Pathur Razi Ansyah
Program Studi Teknik Mesin, Fakultas Teknik, Universitas Lambung Mangkurat, Kalimantan Selatan 70123
Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Screening Support of Bimetallic Ruthenium-Tin Catalysts for Aqueous Phase Hydrogenolysis of Furfuryl Alcohol to 1,5-Pentanediol Rodiansono, Rodiansono; Azzahra, Atina Sabila; Mikrianto, Edi; Ridhoni, Arif; Mustari, Ikhsan; Nurfitriani, Anggita; Bodoi, Thea Seventina Desiani; Sanjaya, Rahmat Eko; Suarso, Eka; Ansyah, Pathur Razi
Bulletin of Chemical Reaction Engineering & Catalysis 2025: BCREC Volume 20 Issue 2 Year 2025 (August 2025)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20357

Abstract

The selective aqueous phase hydrogenolysis of furfuryl alcohol (FFalc) to 1,5-pentanediol (1,5-PeD) using supported bimetallic ruthenium-tin (Ru-Sn) catalysts on various metal oxide supports (e.g., TiO2, ZnO, ZrO2, Nb2O5, g-Al2O3) and its combination were investigated systematically. The catalysts were prepared via coprecipitation-hydrothermal at 150 oC for 24 h, followed by reduction with H2 at 400 oC for 2 h. Supported Ru-Sn on TiO2(A), g-Al2O3, and ZrO2 catalysts exhibited higher yield of 1,5-PeD (55-69%) than that other catalysts at 180 oC, H2 10-30 bar for 3-5 h. However, those supported catalysts showed poor recyclability after the first reaction run, and therefore further examination on g-Al2O3 supported Ru-Sn was performed. The Ru-Sn catalyst supported on g-Al2O3-metal oxide composites (metal oxides: ZrO2, TiO2(A), TiO2(R), ZnO, Nb2O5, and C) afforded higher FFalc conversion and yield of 1,5-PeD than that of unmodified g-Al2O3 at 180 oC, H2 30 bar for 3 h. Among them, the Ru-Sn/g-Al2O3-TiO2(A) (33%) catalyst could afford the highest yield of 1,5-PeD (80%) at 99% conversion FFalc at 180 oC, H2 10 bar for 5 h. Around 95% of this catalyst can be recycled after the second reaction run and the activity can be restored to initial after reactivation with H2 at 400 oC for 2 h with a 69% yield of 1,5-PeD at 97% FFalc conversion. Copyright © 2025 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Influence of Mixture Composition Between Soybean Oil and Diesel Fuel on Characteristic of Droplets Combustion Subagyo, Rachmat; Ansyah, Pathur Razi; Aminanto, Robbi Sholaiman
International Journal of Mechanical Engineering Technologies and Applications Vol. 3 No. 1 (2022)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2022.003.01.7

Abstract

Depleting oil reserves has encouraged many researchers to search for new energy resources. Of many alternatives, soybean oil has been proposed as biodiesel. In this study, influence of mixture composition of soybean oil and diesel fuel on the droplet combustion characteristics was investigated. These characteristics included Ignition delay time, fire visualization, flame temperature and burning rate. The mixture comprises 10 to 50% soybean oil while the rest are Pertamina Dex diesel fuel. The study shows that flash point temperature, ignition delay time and burning rate increase as soybean oil content increases. In contrary, the flame height decreases with increasing soybean oil content.
AN EXPERIMENTAL STUDY OF THE EFFECT OF VARIATION OF IMPACT LEVELS ON WORKING EFFICIENCY OF ARCHIMEDES SCREW TURBINE ON MICRO-HYDRO POWER PLANT Nugraha, Andy; Silalahi, Dani Surya Hamonangan; Ansyah, Pathur Razi; Ramadhan, Muhammad Nizar; Amrullah, Apip; Cahyono, Gunawan Rudi
International Journal of Mechanical Engineering Technologies and Applications Vol. 4 No. 1 (2023)
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/MECHTA.2023.004.01.1

Abstract

Micro-hydro power plants take advantage of the energy potential of low-head airflow. with the development of technology that can support it, namely the Archimedes screw turbine as the driving force. Various parameters must be considered to determine the performance of micro hydro power plants with Archimedes screw turbines. A design is carried out with a discharge parameter flow rate of 2 l/s, a turbine slope of 300, and an immersion level variation of 0.3, 0.5, and 0.7, where the final result shows the value of torque, hydraulic power, mechanical power, generator, and efficiency, which decreases with the level of water immersion in the last blade.
Pengaruh Variasi Pulsed-Spray Time dengan Water Coolant Pada Media Pendinginan Terhadap Efisiensi dan Temperatur Panel Surya Ansyah, Pathur Razi; Cahyono, Gunawan Rudi; Budianto, Akhmad Ghiffary Budianto; Amrullah, Apip; Farobie, Obie; Jamalulail, Nanda; Lukmana, Wahyu
Jurnal Keteknikan Pertanian Vol. 13 No. 1 (2025): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.013.1.18-38

Abstract

Teknologi panel surya memungkinkan konversi cahaya matahari menjadi energi listrik. Akan tetapi, ada masalah yang dapat muncul pada kinerja panel surya, misalnya peningkatan suhu panel surya melebihi batas kerjanya sendiri. Suhu yang semakin meningkat akan membuat kinerja panel surya semakin berkurang. Maka, penting menjaga suhu panel surya sangat diperlukan agar performanya tetap optimal. Penelitian ini dilakukan untuk mengetahui pengaruh delay timing back and front surface spray cooling terhadap temperatur rata – rata, daya output, dan pengoptimalan energi panel surya. Pengujian ini menghasilkan temperatur panel surya sangat menurun ketika delay timing spray 10 menit senilai 58,95°C, ketika delay timing spray 20 menit senilai 70,78°C, sedangkan ketika delay timing spray 30 menit senilai 78,63°C. Metode pendinginan yang dilakukan selama 1 menit dengan variasi delay timing spray 10 menit, 20 menit, dan 30 menit. Uji eksperimental ini dapat menurunkan suhu panel surya, pada delay timing spray 10 menit menjadi 58,95°C, pada delay timing spray 20 menit menjadi 70,78°C, dan pada delay timing spray 30 menit menjadi 78,63°C. Metode pendinginan dilakukan selama 1 menit dengan delay timing spray yang bervariasi yaitu 10 menit, 20 menit dan 30 menit. Melalui pengujian ini juga diperoleh nilai energi total. Apabila delay timing spray 10, 20 dan 30 menit masing-masing sebesar 8,61 x 10-3 kWh (30982,06 Joule), 8,03 x 10-3 kWh (28890,32 Joule) dan 7,61 x 10-3 kWh (27408,06 Joule). Kesimpulan dari penelitian yang telah dilakukan adalah delay timing spray yang paling optimal delay timing spray selama 10 menit dengan suhu rata-rata sebesar 58,95°C, dan optimalisasi energi terbaik adalah dengan energi total sebesar 30982,06 Joule atau 8,61 x 10 -3kWh.
Co-Authors Aji Nihin Akhmad Ghiffary Budianto Akhmad Syarief Ali Mokhtar Ali Saifullah Aminanto, Robbi Sholaiman Andinusa Rahmandhika Andy Nugraha Anggara, Fajar Apip Amrullah Apip Amrullah Aristya Faisal Atina Sabila Azzahra Azzahra, Atina Sabila Bodoi, Thea Seventina Desiani Edi Mikrianto Fajar Anggara Gunawan Rudi Cahyono Hartoyo, Muhammad Hendrawan Septian Henry Carles Irawansyah, Herry Jamalulail, Nanda Jerry Iberahim Joni Riadi Joni Riadi Joni Riadi, Joni Lukmana, Wahyu M. Reynaldi Perdana Saputra Ma'ruf, Ma'ruf Muhammad Firdaus Jauhari, Muhammad Firdaus Muhammad Muntaha Muhammad Munthaha Muhammad Nadjib, Muhammad Muhammad Nizar Ramadhan Mulgi, M Abdul Muntaha, Muhammad Munthaha, Muhammad Mustari, Ikhsan N. Alexius Mikael Noviani Haty Lala Nurfitriani, Anggita Nuryasin Qadimil Awaly Nuryasin Qadimil Awaly Obie Farobie P.S.M. Reynaldi Pagis, Arifah Rachmat Subagyo Rahmat Eko Sanjaya Ramadhan, M. Nizar Ridhoni, Arif Rodiansono Rodiansono Rusdi Rusdi Sadang Husain Saputra, M. Reynaldi Perdana Silalahi, Dani Surya Hamonangan Suarso, Eka Suhanan Suhanan, Suhanan Sunu Hasta Wibowo Zainal Aqli Zuhri Simanjuntak, Rinal Fadel