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Radissa Dzaky Issafira
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Department of Mechanical Engineering, Faculty of Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur 1st floor Giri Reka Building, East Java, Indonesia Jl. Raya Rungkut Madya, Gunung Anyar Surabaya Jawa Timur 60294 Indonesia
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INDONESIA
Biomedical and Mechanical Engineering Journal
Published by Universitas Pembangunan Nasional Veteran Jawa Timur
ISSN : -     EISSN : 27761983     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
The Biomej Journal is published by the Mechanical Engineering Study Program, Faculty of Engineering, East Java "Veteran" University, Surabaya-Indonesia. Biomej is an open-access peer review journal that mediates the dissemination of academics, researchers, and practitioners in the field of mechanical engineering and accepts journal publications from all over Indonesia. Biomej aims to provide a forum for national and international academics, researchers and mechanical engineering practitioners to publish original articles. All accepted articles will be published and will be freely available to all readers with wide visibility. The scope of the Biomej Journal is including widely topics in engineering such as: 1. Biomedical engineering 2. Tribology 3. Modelling 4. Finite ELement Method 5. Material Science 6. Mechatronics 7. Structural and Machiine Design 8. Stress Analysis 9. Renewable Energy 10. Structural Mechanics 11. Thermodynamics 12. Material Processing 13. Fatigue and Air Conditioning 14. Heat Transfer 15. Manufacturing 16. Fluid Mechanics 17. Combustion 18. Aeodynamics 19. Environmental Protection 20. Acoustic and Noise 21. Energy Studies 22. Refrigerationand Air 23. Conditioning 24. Engines and Turbines 25. Thermodynamics 26. Earth Science 27. Natural Hazards 28. Food Technology Processing
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 14 Documents
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Search results for , issue "Vol. 1 No. 2 (2021): BIOMEJ" : 14 Documents clear
Benthos Diversity as a Water Quality Indicator of Coastal Waters Klumpang Beach, Labuan Bajo, East Nusa Tenggara, Indonesia Muhammad Abdus Salam Jawwad; M R A Maulana; R H A Murti
BIOMEJ Vol. 1 No. 2 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

Indonesia as an archipelagic country has a very high wealth of aquatic resources with the level of diversity of aquatic ecosystems as the role of living organisms. Benthos is an organism that lives on the bottom sediment of a body of water. This organism lives relatively sedentary and cannot avoid contact with pollutants and its lifespan is relatively long, so that if there is a change in water quality and the substrate in which it lives, it will affect its composition and abundance. The purpose of this study was to determine the index of benthos diversity found in coastal waters. Klumpang, Labuan Bajo, East Nusa Tenggara, Indonesia. Therefore, benthos can be used as a bioindicator in observing pollution in water, especially on the Klumpang coast. The result shows that   Klumpang beach shoreline has a medium diversity index, adequate productivity level, balanced ecosystem, and medium ecological pressure. The three sampling points has Shannon-Wiener diversity index by 1.790, 1.589, and 1.309 by sequence. The unbalanced species distribution of the species may indicate an unstable ecosystem in the shoreline, as the impact of surrounding activities especially in the eastern side of the coast.
The Solid-Liquid Mass Transfer Analysis for Delignification Process of Coffee Husk in Stirred Reactor Atika Andini; Luluk Edahwati; S D Nurherdiana
BIOMEJ Vol. 1 No. 2 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

The delignification process using the organosolv method is a process of removing lignin content by using organic solvents (such as ethanol). In this study, mass transfer analysis was used to determine the mass transfer coefficient of the delignification process of coffee husk. The first process was incubation process by using white rot fungi (Phanerochaete chrysosporium )in the coffee husk biomass, then followed by hydrolyzed process by using citric acid as a organosolv solvent. The delignification process were carried out under a conditions of temperature 50°C, solvent or etanol concentration 25%, speed range (500-700 rpm) and stirring time (1-4 hours with the gradient of 0,5 hours). The mass transfer effect was determined for different speed range and stirring time. From this research, the result of the mass transfer coefficient has range of 0.064/s – 0.46/s. The increasing of stirring time will affect to the mass transfer coefficient, which is also increasingly depend on the stirring time.
Strength Analysis of Frame Structure Loading in Planning Using Solidworks Static Simulation Study RM Bisono; N Hafidhoh; A T A Salim
BIOMEJ Vol. 1 No. 2 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

The main focus of this research is to design the frame of the various chips chopper machine that is sturdy according to the needs and has a long life. The design and simulation were carried out using the Solidworks 2020 software. The material used to make the frame structure was ASTM A36 Steel with a density of 7850 kg/m3. The mass of the chopper machine frame that has been made is 6,383 kg. By giving two kinds of loading F1 and F2 of 18.718 N and 29.4 N, the resultant displacement for F1 and F2 is 0.1088 mm and 0.0124 mm, respectively, and the maximum Von Mises Stress value is 9.846 x 106 N/m2 and 1.330 x 106 N/m2, respectively. Based on these results, according to the theoretical calculation of maximum shear stress, the maximum Von Mises stress value caused by external forces for both is very much smaller than the Yield Strength Material value (2,500 x 108 ). So that this frame structure is declared safe and can be continued into the manufacturing process of various chips chopping machines according to the workload.
Availability of Palm Oil Biodiesel in Indonesia and Its Effect on Diesel Engine: A Review Wiliandi Saputro; Wahyu Dwi Lestari Edahwati; Luluk Edahwati; Radissa Dzaky Issafira; Ahmad Khairul Faizin; Ndaru Adyono; Tria Puspa Sari
BIOMEJ Vol. 1 No. 2 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

Palm oil is one of the base ingredients that can be used in making of biodiesel which is an alternative fuel to replace diesel fuel. The ability of palm oil as biodiesel should be balanced with the quantity of palm oil as well as the level of biodiesel production capability. In this paper, authors try to analyze about palm oil as biodiesel starting from number of palm plantations up to the level of biodiesel production capability from palm oil. The analysis conducted in the first part of this paper can be used as a reference that shows the level of availability of the palm oil which can be processed into biodiesel as an alternative fuel in the future. In the next part, the authors tried to analyze the impact of biodiesel made from palm oil starting from engine performance, exhaust gas emissions, rate of wear, quality of lubricant, and deposit formed. It was is done in order to find out the advantages and disadvantages that occur from biodiesel so that it can be used as a reference or consideration in the use of biodiesel-fueled palm oil.

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