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All Journal Jurnal Pengbdian Teknik Mesin Biomedical and Mechanical Engineering Journal Jurnal Akademik Pengabdian Masyarakat Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development
Luluk edahwati
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Perancangan Mesin Pengupas dan Pemarus Batang Ubi Kayu: Konsep Rancangan Mesin Novel Karaman; Ndaru Adyono; Tria Puspa Sari; Luluk Edahwati; Wahyu Dwi Lestari Edahwati
BIOMEJ Vol. 1 No. 1 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Abstract

Indonesia is the fifth largest cassava-producing country, where the national cassava production per year reaches 23 million tons. On the other hand, the organic waste in the form of cassava stems with the potential to use a large alpha-cellulose stem content. Alpha-cellulose is a much-needed biomass material in the field of industry and renewable energy sources. Highquality alpha-cellulose is produced from cassava stem fibers that have separated the outer shell. Research in the design of machines capable of processing stripping and sequencing cassava stems simultaneously has the potential to increase the productivity of making Alpha-cellulose raw materials for industrial needs. The prototype design peeling machine and a cassava rod pucker using the engine element approach is expected to produce an engine design that has the specification of a 0.5 HP 3-phase main drive motor with a 1400 rpm rotation consisting of 2 pulley transmissions and a gearbox ratio of 60.
Mini Factory Laboratory from Technology Reverse Engineering Ballet Reactors in Struvite Formation Luluk Edahwati; Sutiyono; Wahyu Dwi Lestari Edahwati; Radissa Dzaky Issafira; Wiliandi Saputro; Ahmad Khairul Faizin; Ndaru Adyono; Tria Puspa Sari
BIOMEJ Vol. 1 No. 2 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Reverse Engineering (RE) can be interpreted as procedures and processes in dismantling an object to find out the materials, working methods, or technology used so that the object can function properly. Design activities using the reverse engineering concept make it easier for students to understand product specifications, product advantages and disadvantages, product production processes and production cost estimates before designing new products. The laboratory is one place that can be used to carry out the reverse engineering process. The bulkhead reactor is an alternative to the stirred tank reactor with the aim that the resulting product is maximized both in terms of quantity and morphology or shape of the material. The benefit of disassembling this product is as a first step in understanding the concept of reverse engineering in the task of designing machines or tools. From the results of the study, it was found that the formation of struvite occurred at pH 9 using an air flow rate of 1 l/minute.
Non-Premixed Combustion Simulation with Variation of Swirl Burner Slope using Turbulence Modeling K-ɛ Radissa Dzaky Issafira; Widya Wijayanti; Luluk Edahwati; Wahyu Dwi Lestari Edahwati; Wiliandi Saputro; Ahmad Khairul Faizin; Ndaru Adyono; Tria Puspa Sari
BIOMEJ Vol. 1 No. 2 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

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Combustion is a very complex matter. Therefore, we need to know the phenomenon that occur in combustion apart from the temperature distribution. This research uses quasi-research. The background in using quasi-experimental is because it has advantages in data collection. Moreover, the phenomena that occur in more detailed research by means of a numerical approach could also be observed. This research was conducted with an approach (simulation) of diffusion combustion using methane (CH4) fuel and air containing 29% oxygen (O2), 71% nitrogen (N2) and the addition of swirl in the air ducts. k-ɛ turbulence modeling was aaplied in this somulation. This variation of the fuel velocities are 3 m/s, 5 m/s, 7 m/s, where the air velocity was varied for 3 m/s, 5 m/s, 7m/s. In this simulation, room pressure of 1 atm was applied for the surrounding. The results showed that, the greater the angle of inclination of the swirl burner, the shorter the flame. And on the variation of fuel velocity, we get the result that the higher fuel velocity, increase fire height; however, the temperature of the fire height will decrease.
Manufacturing Acetabular Liner UHMWPE using CNC Milling Wahyu Dwi Lestari Edahwati; Luluk Edahwati; Radissa Dzaky Issafira; Wiliandi Saputro; 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

Ultra High Molecular Weight Polyethylene (UHMWPE) is a biomedical polymer that is useful in the orthopedic field as a bearing component in artificial hip joints. In general, these polymers pair up and rub against each other with metallic biomaterials, namely 316L stainless steel, cobalt chromium (CoCr) and titanium, which can cause material wear problems. One way to increase the wear resistance of UHMWPE is through the manufacturing process. The purpose of this research is to manufacture acetabular liner products using a CNC milling machine to obtain high surface quality and dimensional accuracy. The CNC milling machine used is the type of YCM 1020 EV 20. The manufactured specimen is then measured for roughness and dimensional accuracy. Based on the measurement results, it is found that the acetabular liner specimens from the CNC milling process are still in accordance with the standard ASTM standard (F 2033-12).
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.
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.
A Performance of Baffled Stirred Tank Reactor in Map Mineral Recovery Luluk Edahwati; Sutiyono; Suprihatin
BIOMEJ Vol. 4 No. 1 (2024): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/biomej.v4i1.101

Abstract

In the agricultural and wastewater treatment industries, the formation of Magnesium Ammonium Phosphate (MAP), also known as struvite, is an important process to utilize organic waste and produce value-added phosphate fertilizers. In this context, the use of a stirred tank reactor equipped with baffles is a major concern. This study aims to evaluate the performance of a stirred tank reactor with baffles in the recovery of MAP. Analysis of the experimental results shows that the use of baffles has a significant impact on process efficiency and the quality of the MAP product produced. This study provides a deeper understanding of the role of baffles in maintaining the flow pattern and mixing of raw materials in the reactor tank, thus making an important contribution to the development of more efficient and environmentally friendly phosphate fertilizer manufacturing technology. best phosphate obtained 27%, ph 10, temperature 30oC and molar ratio 1:1:2 Keywords: molar ratio, pH, precipitation, RTB, temperature, struvite
Teknologi Pembuatan Sabun Organik Dari Limbah Minyak Goreng Dan Herbal Kebun Tani Pada Kelompok Tani Kosagrha Lestari Surabaya Sutiyono Sutiyono; Luluk Edahwati; Atika Andini
JURNAL AKADEMIK PENGABDIAN MASYARAKAT Vol. 3 No. 4 (2025): Juli
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/japm.v3i4.5870

Abstract

This community service program aims to develop a technology for producing organic soap made from used cooking oil and herbal plants from local community gardens as an innovative by-product for the Kosagrha Lestari Farmers Group in Medokan Ayu, Surabaya. The organic soap is produced using used cooking oil processed through a saponification method, combined with local herbal extracts such as lemongrass and mint leaves, which offer skin health benefits. The activity was carried out in the form of training and mentoring sessions for members of the farmers group, focusing on raw material management, soap-making processes, and product marketing strategies. The results showed that the produced soap had good quality and was safe for use. This program not only successfully reduces environmental pollution by utilizing waste cooking oil but also empowers the farmers group by enhancing their entrepreneurial skills. It opens up new market opportunities, improves economic well-being, and supports environmental sustainability by reducing the use of synthetic chemicals..
Optimalisasi Konsep Octane Cycle sebagai Strategi Pengolahan Sampah Terpadu Menuju Desa Zero Waste di Argosari, Malang: Optimalisasi Konsep Octane Cycle sebagai Strategi Pengolahan Sampah Terpadu Menuju Desa Zero Waste di Argosari, Malang Musyaroh; Anisah Nurul Izzah; Rizqa Ruviana; Luluk Edahwati; Dewi Maya Maharani
Dharmakayana Vol 2 No 1 (2025): Mei : Dharmakayana: Journal of scientists, engineers, educators and scientific ac
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v2i1.41704

Abstract

Argosari Village faces a critical waste management challenge due to the accumulation of biogas slurry (300–500 kg/day), household waste (687 kg/day), and agricultural waste (1,919.7 kg/day). Limited public awareness and waste processing capacity have led to uncontrolled environmental pollution. This community service program introduces the Octane Cycle Concept, a novel and integrative waste utilization model that transforms both organic and inorganic rural waste into valuable products such as compost, fertilizers, fish feed, mushroom media, and handicrafts. The Octane Cycle emphasizes a closed-loop, multi-output processing approach that links food, energy, and local economy in a zero-waste framework. The program was carried out in five phases: preparation, equipment provision, community training, monitoring and evaluation, and reporting. Results show that waste volume in Argosari Village was reduced by 51% within three months. In addition to improving environmental cleanliness, the program fostered entrepreneurship and increased household savings through the production of bio-based products. This model demonstrates the scientific and practical potential of applying circular economy principles at the village level.
Co-Authors Ahmad Khairul Faizin Ahmad Khairun Faizin Anisah Nurul Izzah Atika Andini Dewi Maya Maharani Ferdi Kurniawan Ika Nawang Puspitawati L.Urip Widodo, Yohandrik Novel Karaman Musyaroh Ndaru Adyono Novel Karaman Radissa Dzaky Issafira Radissa Dzaky Issafira Rizqa Ruviana S D Nurherdiana S Sutiyono Suprihatin Sutiyono Sutiyono Sutiyono Tria Puspa Sari Wahyu Dwi Lestari Wahyu Dwi Lestari Wahyu Dwi Lestari Edahwati Widya Wijayanti Wiliandi Saputro