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All Journal Nusantara Science and Technology Proceedings Jurnal Pengbdian Teknik Mesin Biomedical and Mechanical Engineering Journal
Tria Puspa Sari
Department Of Mechanical Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur, Surabaya 60294, Indonesia
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Journal : Biomedical and Mechanical Engineering Journal

 1 
Analysis of effect Magnesium Ammonium Phospate (MAP) Concentration on Struvite Morphology in A Vertical Reactor Luluk Edahwati; Sutiyono; Atika Andini; Wahyu Dwi Lestari; Tria Puspa Sari; Ndaru Adyono; Novel Karaman
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 1 No. 1 (2021): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Struvite was a white crystal known as Magnesium Ammonium Phosphate Hexahydrate (MgNH4PO4.6H2O). In industry, struvite was found in the pipes crust which the hot fluid through passes. Struvite is often used as fertilizer because it contains phosphate content. The one of benefits of struvite crystals is slow release fertilizer, so it can be more durable, which is good for the growth of the plants. The Precipitation technology is currently one of the most widely applied technologies in struvite formation. The process of forming struvite is carried out by using a vertical reactor. The process started by mixing the equimolar solutions of MgCl2, NH4OH, and H3PO4 with a concentration ratio of 1: 1: 1 and 1: 1: 2. The process was carried out with the condition at the 30°C while the air inlet rate was 1.25 liters/min. The pH of the solution is pH 9 and controlled using NaOH solution. The process was carried out in the steady state condition. Then the solution was filtered and solid was dried at room temperature for 48 hours. From this study, the concentration ratio of 1:1:2 was obtained the best composition of struvite compared to the others ratio. The solid was analyzed by using the SEM-EDX instrument. The morphology of struvite was formed an irregular pyramid-like crystal or commonly referred to as an authorhombic shape.
SEM Analysis of UHMWPE for Biomedical Application Wahyu Dwi Lestari; Luluk Edahwati; Tria Puspa Sari; Ndaru Adyono; Novel Karaman
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 1 No. 1 (2021): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

The objective of this study is to investigate the wear mechanism of UHMWPE acetabular liner. There were three samples of acetabular liner with variations without crosslink, with crosslink doses of 50 kGy and 100 kGy which were subjected to a wear testing process. The wear test was carried out using a Tribometer wear testing machine with a total of 30,000 cycles and a load of 800N. Microstructure analysis was performed using scanning electron microscopy (SEM). The results show that the surface of the UHMWPE acetabular liner with the crosslink treatment is smoother than the untreated one. This shows that UHMWPE with crosslink treatment has a lower wear rate, where the greater the crosslink dose the lower the wear rate. The wear mechanism that occurs in this study is the third body abrasion which leads to adhesive wear.
Perancangan Mesin Pengupas dan Pemarut Batang Ubi Kayu: Konsep Rancangan Mesin Novel Karaman; Ndaru Adyono; Tria Puspa Sari; Luluk Edahwati; Wahyu Dwi Lestari
Biomedical and Mechanical Engineering Journal (BIOMEJ) Vol. 1 No. 1 (2021): BIOMEJ
Publisher : Mechanical Engineering Department at Universitas Pembangunan Nasional "Veteran" Jawa Timur

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Abstract

Indonesia negara penghasil ubi kayu terbesar ke lima di dunia dimana produksi ubi kayu Nasional per tahun mencapai 23 juta ton. Disisi lain terdapat limbah organik berupa batang ubi kayu dengan potensi pemanfaatan kandungan alpha-selulosa batang yang besar. Alpha-selulosa merupakan bahan dari biomass yang sangat dibutuhkan dalam bidang industri maupun sumber energi yang terbarukan. Alpha-sellulose yang berkualitas tinggi dihasilkan dari serat batang ubi kayu yang telah dipisahkan bagian kulit luarnya. Penelitian dalam perancangan mesin yang mampu memproses pengupasan dan pemarutan batang ubi kayu secara bersamaan sangatlah berpotensi meningkatkan produktivitas pembuatan bahan baku Alpha-selulosa untuk kebutuhan industri. Perancangan purwarupa mesin pengupas dan pemarut batang ubi kayu menggunakan pendekatan elemen mesin diharapkan menghasilkan rancangan mesin yang memiliki spesifikasi motor penggerak utama 3 phase kapasitas 0,5 HP dengan putaran 1400 rpm yang terdiri dari 2 transmisi berupa pulley dan transmisi gear box ratio 60.
Analysis of effect Magnesium Ammonium Phospate (MAP) Concentration on Struvite Morphology in A Vertical Reactor Luluk Edahwati; Sutiyono; Atika Andini; Wahyu Dwi Lestari; Tria Puspa Sari; Ndaru Adyono; Novel Karaman
BIOMEJ Vol. 1 No. 1 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Struvite was a white crystal known as Magnesium Ammonium Phosphate Hexahydrate (MgNH4PO4.6H2O). In industry, struvite was found in the pipes crust which the hot fluid through passes. Struvite is often used as fertilizer because it contains phosphate content. The one of benefits of struvite crystals is slow release fertilizer, so it can be more durable, which is good for the growth of the plants. The Precipitation technology is currently one of the most widely applied technologies in struvite formation. The process of forming struvite is carried out by using a vertical reactor. The process started by mixing the equimolar solutions of MgCl2, NH4OH, and H3PO4 with a concentration ratio of 1: 1: 1 and 1: 1: 2. Theprocess was carried out with the condition at the 30°C while the air inlet rate was 1.25 liters/min. The pH of the solution is pH 9 and controlled using NaOH solution. The process was carried out in the steady state condition. Then the solution was filtered and solid was dried at room temperature for 48 hours. From this study, the concentration ratio of 1:1:2 was obtained the best of struvite compared to the others ratio. The solid was analyzed by using the SEM-EDX instrument. The morphology of struvite was formed an irregular pyramid like crystal or commonly referred to as an authorhombic shape.
SEM Analysis of UHMWPE for Biomedical Application Wahyu Dwi Lestari; Luluk Edahwati; Tria Puspa Sari; Ndaru Adyono; Novel Karaman
BIOMEJ Vol. 1 No. 1 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The objective of this study is to investigate the wear mechanism of UHMWPE acetabular liner. There were three samples of acetabular liner with variations without crosslink, with crosslink doses of 50 kGy and 100 kGy which were subjected to a wear testing process. The wear test was carried out using a Tribometer wear testing machine with a total of 30,000 cycles and a load of 800N. Microstructure analysis was performed using scanning electron microscopy (SEM). The results show that the surface of the UHMWPE acetabular liner with the crosslink treatment is smoother than the untreated one. This shows that UHMWPE with crosslink treatment has a lower wear rate, where the greater the crosslink dose the lower the wear rate. The wear mechanism that occurs in this study is the third body abrasion which leads to adhesive wear.
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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Abstract

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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Abstract

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).
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.
Co-Authors Afira Ainur Rosidah Ahmad Khairul Faizin Ahmad Khairun Faizin Amajida Sadrina Atika Andini Denny Widhiyanuriyawan Erwan Adi Saputro Ferdi Kurniawan Jayan Sentanuhady L.Urip Widodo, Yohandrik Novel Karaman Luluk Edahwati Luluk edahwati Luluk Edahwati Luluk Edahwati Luluk Edahwati Luluk Edahwati Luluk Edahwati Luluk Edahwati M. H. B. Satria Mr. Sutiyono Muhammad Ikhsan Ndaru Adyono Ndaru Adyono Ndaru Adyono Novel Karaman Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Rahadi Agung Raharjo Ramadan Bimo Anggoro Ryan Rizaldi Siti Chalimah Sutiyono Wahyu Dwi Lestari Wahyu Dwi Lestari Wahyu Dwi Lestari Edahwati Widya Wijayanti Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Willie Prasidha