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All Journal Rekayasa Mesin Journal of Engineering and Management in Industrial System International Journal of Mechanical Engineering Technologies and Applications (MECHTA)
ING Wardana
Dept. of Mechanical Engineering, Brawijaya, University Malang
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Pengaruh Doping Cu terhadap Karakteristik Material dan Ketahanan Karbon pada Anoda Ni1-X-CuX-BCZY untuk PSOFC Setiawan, Nanang; Tseng, Chung-Jen; Shen, Chin Tien; Wardana, ING
Jurnal Rekayasa Mesin Vol 11, No 3 (2020)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2020.011.03.16

Abstract

The purpose of this study is to investigate the microstructure characteristics of the Ni1-xCux-BCZY anode and to analyze the carbon resistance by doping Cu into the Ni-BCZY anode. Ni1-xCux and BaCe0.7Zr0.1Y0.2O3-𝛿 (BCZY) powder were prepared by solid-state reaction with Ni1-xCux /BCZY = 60:40 wt%. The powder is calcined at a temperature of 700 °C, sintered at 1450 °C, and reduced by pure H2. The results of the Ni1-xCux-BCZY microstructure show an increase in the average particle size from 2.71 to 2.88 µm with increasing calcination time from 0.5 to 1.5 hours. Furthermore, the conductivity of Ni1-xCux-BCZY (x = 0.1) is lower than Ni1-xCux-BCZY (x = 0), this is associated with enhancement electron scattering, which correlatives with large metal particle obtained. The optimum conductivity of Ni1-xCux-BCZY(x=0.1) is obtained at a calcination time of 0.5 hours. Furthermore, NiCu anode can effectively increase the carbon resistance while using methane as a fuel.
PENINGKATAN PRODUKSI BAHAN BAKAR HIDROGEN DENGAN BANTUAN NATURAL SURFACTANT PADA PROSES WATER SPLIT Purnami, Purnami; Dewi, Fransisca Gayuh Utami; Wardana, ING; Sasongko, Mega Nur; Yusuf, M Umar; Nugroho, Willy Satrio
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1413

Abstract

Hydrogen is an alternative fuel due to its environmental friendliness and abundance. Hydrogen can be produced through water-splitting technique, in which the Oxygen (O2) and Hydrogen (H2) are separated. Water electrolysis is one of many causes of water-splitting that effectively results H2 with high purity. One drawback of electrolysis is the low efficiency. In this study, a rice straw natural surfactant was utilized to improve the efficiency. Rice straw with the volume of 5 ml, 10 ml, dan 15 ml were added to the electrolyte solution. This study shows the rice straw based natural surfactant contains hydrophilic and hydrophobic sides. Both sides capable to reduce the surface tension of the solution which destabilizes water molecules. The aromatic magnetic field of rice straw surfactant homogenizes the water net dipole moment due to the diamagnetism of water. These contributes towards the weakened hydrogen bond of the water in the solution. The synergy between hydrophobic and hydrophilic sides is potent to alter hydrogen production rate through intrinsic magnetism.
PENINGKATAN PRODUKSI BAHAN BAKAR HIDROGEN DENGAN BANTUAN NATURAL SURFACTANT PADA PROSES WATER SPLIT Purnami, Purnami; Dewi, Fransisca Gayuh Utami; Wardana, ING; Sasongko, Mega Nur; Yusuf, M Umar; Nugroho, Willy Satrio
Jurnal Rekayasa Mesin Vol. 15 No. 1 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i1.1413

Abstract

Hydrogen is an alternative fuel due to its environmental friendliness and abundance. Hydrogen can be produced through water-splitting technique, in which the Oxygen (O2) and Hydrogen (H2) are separated. Water electrolysis is one of many causes of water-splitting that effectively results H2 with high purity. One drawback of electrolysis is the low efficiency. In this study, a rice straw natural surfactant was utilized to improve the efficiency. Rice straw with the volume of 5 ml, 10 ml, dan 15 ml were added to the electrolyte solution. This study shows the rice straw based natural surfactant contains hydrophilic and hydrophobic sides. Both sides capable to reduce the surface tension of the solution which destabilizes water molecules. The aromatic magnetic field of rice straw surfactant homogenizes the water net dipole moment due to the diamagnetism of water. These contributes towards the weakened hydrogen bond of the water in the solution. The synergy between hydrophobic and hydrophilic sides is potent to alter hydrogen production rate through intrinsic magnetism.
UPAYA PENINGKATAN PRODUKTIVITAS BERDASARKAN ANALISIS PENGARUH KESELAMATAN, KESEHATAN KERJA, DAN LINGKUNGAN (K3L) TERHADAP PRODUKTIVITAS TENAGA KERJA DI PABRIK GULA PT. KREBET BARU MALANG Na'ali, Sidi; Wardana, ING; Soenoko, Rudy
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 1 No. 1 (2013)
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jemis.2013.001.01.5

Abstract

In industrialization we need to improve productivity and efficiency which it helps to challenge and can produced high performance product. One of factor that influence productivity is about safety, healthy and environment where we work. We could said that because K3L could build competent, professional and skilled worker. This research measure about relationship between safety, healthy, and environment variable with productivity worker. We use Structural Equation Modeling (SEM) to examine data because with SEM, we will get simultaneous causality relationship between variable. With considering variable that influence in productivity, we can give some recommendation to improve productivity. Based on data and result we got some variable that give significant influence, such as: comprehension in vision and mission in K3L, fire extinguisher availability, safety sign utilization, K3L training, machine jig and fixture completeness, machine lay out and tool storage, machine and tool maintenance. Healthy variable that influence productivity is salary, scholarship, disable factor from worker, worker competence, optimize  polyclinic, optimize medical personal, accident assurance. Environment variable that influence productivity is  trash bin availability, good lighting, processing waste, good air circulation, safety from danger in work environment, good temperature, bathroom sink availability, and WC avalialbility.
THE EFFECT OF SWEET ORANGE PEEL OIL ADDITIVE ON VIRGIN COCONUT OIL COMBUSTION CHARACTERISTIC Sangkilang, Elvinda; Sasmoko, Sasmoko; Wijayanti, Widya; Wardana, ING
International Journal of Mechanical Engineering Technologies and Applications Vol. 7 No. 1 (2026): January - June
Publisher : Mechanical Engineering Department, Engineering Faculty, Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776//MECHTA.2026.007.01.6

Abstract

Biodiesel is a viable renewable alternative energy source to develop and further utilize in order to maintain environmental sustainability. Virgin coconut oil (VCO), which is plentiful in Indonesia, is one of several vegetable oils that has the potential to be converted into biodiesel. The viscosity and density of VCO are high due to the glycerol and three fatty acid components, which have a notable impact on both the performance and efficiency of combustion. Sweet orange peel oil additive plays an important role in enhancing combustion because its chemical compound, which has an aromatic structure, can influence molecular interactions, thereby enhancing the kinetic energy of fuel molecules, which consequently improves the combustion performance of vegetable oil. The combustion process was visually examined using the high-speed camera Canon 600D. The results show that the flame dimensions increased and its color changed from orange to blue, indicating that utilization of sweet orange peel oil could enhance the combustion energy values, the blue color has a greater energy level in the visible light spectrum than the orange hue. Furthermore, it was noted that the ignition delay time showed a decrease in duration, but the burning time showed a comparable pattern of being extended. Vegetable oil deforms and becomes more reactive due to the disruption of its molecular structure caused by the magnetic field of the aromatic structure found in sweet orange peel oil. This phenomenon was confirmed by molecular dynamic simulation using the HyperChem 8.0.10 software.
Co-Authors Abdul Hadi Ali Akbar Denny Widhiyanuriyawan Dewi, Fransisca Gayuh Utami Djoko Sutikno Djoko Wahyudi Handono Sasmito Lilis Yuliati MARIA BINTANG Mega Nur Sasongko Na'ali, Sidi Nanang Setiawan Nur Aini Uwar Nurkholis Hamidi Pranoto, Bayu Purnami Purnami Ray Dewi Rr. Poppy Puspitasari Rudy Soenoko Sangkilang, Elvinda Sasmoko, Sasmoko Shen, Chin Tien Sukarni Sukarni Tseng, Chung-Jen Wati, Rita Fajar Widya Wijayanti Willy Satrio Nugroho Wiluddyana Ghoisi Nafida Winarto Winarto Yusuf, M Umar Zulkifli Kurniawan