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All Journal TEKNIK JURNAL KIMIA SAINS DAN APLIKASI Publikasi Pendidikan JURNAL TEKNOLOGI LINGKUNGAN CHEMICA Jurnal Teknik Kimia Jurnal Teknologi Pangan Jurnal Teknik Kimia Eksergi: Chemical Engineering Journal Majalah Ilmiah MOMENTUM E-Dimas: Jurnal Pengabdian kepada Masyarakat Indonesia Chimica Acta Journal Of Chemical Process Engineering (JCPE) Turbo : Jurnal Program Studi Teknik Mesin JAST : Jurnal Aplikasi Sains dan Teknologi Jurnal Teknik Kimia Jurnal Metalurgi dan Material Indonesia RADIAL: JuRnal PerADaban SaIns RekAyasan dan TeknoLogi Jurnal Inovasi Teknik Kimia Journal of Community Empowerment for Health Jurnal Abdi Insani JURNAL FLYWHEEL Nusantara Science and Technology Proceedings International Journal Of Science, Technology & Management (IJSTM) International Journal of Eco-Innovation in Science and Engineering (IJEISE) AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Jurnal Pengbdian Teknik Mesin Biomedical and Mechanical Engineering Journal Envirotek : Jurnal Ilmiah Teknik Lingkungan Innovative: Journal Of Social Science Research Jurnal Teknik Kimia dan Lingkungan Maddana: Jurnal Pengabdian Kepada Masyarakat Jurnal Akademik Pengabdian Masyarakat Journal Of Chemical Process Engineering Journal Serambi Engineering (JSE) JURNAL REKAYASA KIMIA & LINGKUNGAN Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development RADIAL: Jurnal Peradaban Sains, Rekayasa dan Teknologi
Luluk Edahwati
Department Of Mechanical Engineering, Universitas Pembangunan Nasional Veteran Jawa Timur, Surabaya 60294, Indonesia
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Transportation Other

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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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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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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.
Analisis Emisi dari Penggunaan Refuse Derived Fuel sebagai Bahan Bakar Alternatif di Industri Semen (Studi Kasus di PT Solusi Bangun Indonesia Cilacap) Dita Prariesta; Luluk Edahwati; Novel Karaman
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol. 15 No. 2 (2023): Envirotek: Jurnal Ilmiah Teknik Lingkungan
Publisher : Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/envirotek.v15i2.282

Abstract

Sampah adalah masalah bagi setiap orang karena selalu dihasilkan setiap harinya dan sepanjang tahun. Untuk menghindari terjadinya kekurangan lahan untuk tempat pembuangan akhir perlu dilakukan penanganan pada sampah yakni salah satunya dapat dengan mengubah sampah menjadi sumber energi seperti misalnya pembuatan RDF (Refuse Derived Fuel). Sejauh ini pemanfaatan RDF skala besar sebagai bahan bakar alternatif baru diterapkan di PT. Solusi Bangun Indonesia Cilacap. Studi ini mengkaji tiga aspek, yaitu spesifikasi bahan bakar alternatif yang digunakan, data emisi dari cerobong, dan data kualitas udara ambien. Dari data produksi diketahui RDF yang dipakai mempunyai spesifikasi nilai kalor sebesar 3991 Kcal/kg, persentase abu sebesar 17,31%, dan kandungan air sebesar 24,23%. Data emisi dari cerobong Kiln-Raw Mill menunjukkan bahwa untuk parameter partikulat, SO2, NOx, HF, HCl, dan CO sebesar 16 mg/Nm3, 36 mg/Nm3, 178 mg/Nm3, 0,4 mg/Nm3, 14 mg/Nm3, dan 16 mg/Nm3. Sedangkan rata-rata hasil pengukuran ambien untuk 10 lokasi di sekitar pabrik untuk parameter partikulat debu (TSP), PM10, PM2.5, SO2, NO2, CO, O3, HC, dan Pb sebesar 75 mg/Nm3, 30 mg/Nm3, 16 mg/Nm3, 31,5 mg/Nm3, 25,5 mg/Nm3, 1164 mg/Nm3, 34 mg/Nm3, <66 mg/Nm3, <0,002 mg/Nm3. Data hasil pengukuran emisi maupun ambien mempunyai nilai di bawah baku mutu yang berlaku
The Utilization of Green Mussel Shell Waste for The Production of Hydroxyapatite Using Sol-Gel Method Aninda Ikaputri; Moh Nur Fuadzi; Luluk Edahwati; Sutiyono Sutiyono
Jurnal Inovasi Teknik Kimia Vol 9, No 1 (2024)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v9i1.9116

Abstract

Hydroxyapatite is a type of ceramic biomaterial made up of calcium and phosphate, with a chemical formula of Ca10(PO4)6(OH)2. The Calcium used in this research was obtained from Green Mussel Shell Waste Precipitated Calcium Carbonate. The research was conducted using the sol-gel method to determine the optimal conditions for hydroxyapatite synthesis with the variable of H3PO4 solution at 0.1 M, 0.5 M, and 1 M. The result at the concentration of H3PO4 on 1 M turns out the optimal condition. The hydroxyapatite synthesis using the sol-gel method with a concentration of 1 M pH 12 phosphoric acid was successfully conducted and known as the optimal condition in this research. From the synthesis results, the characterization of hydroxyapatite synthesis shows there was a P-O bond at 995.27 cm-1 and an OH- bond at 3068.75 cm-1. The ratio of Ca/P calculated is 1.68 which is close to the standard ratio Ca/P of hydroxyapatite.
Analysis of effect Magnesium Ammonium Phospate (MAP) Concentration on Struvite Morphology in A Vertical Reactor Edahwati, Luluk; Sutiyono; Andini, Atika; Dwi Lestari, Wahyu; Puspa Sari, Tria; Adyono, Ndaru; Karaman, Novel
BIOMEJ Vol. 1 No. 1 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/biomej.v1i1.22

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 Dwi Lestari, Wahyu; Edahwati, Luluk; Puspa Sari, Tria; Adyono, Ndaru; Karaman, Novel
BIOMEJ Vol. 1 No. 1 (2021): BIOMEJ
Publisher : UPN 'Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/biomej.v1i1.23

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.
Co-Authors A. Khanifah Achmad Fanani Adeniah Setiabudi Adiman, Thareq Muhammad Fathan Agung F. Kulianto Ahmad Khairul Faizin Ahmad Khairun Faizin Alya Keisha Intan Chayrunisya Andini, Atika Anggriawan, Rizqi Rendri Aninda Ikaputri Anisah D. Ramadhani Anisah Nurul Izzah Aprilianty, Syasmitha Lucky Ardiza, R.Muhammad Rizky Atika Andini Ayu Fakhira Yuliananda Bayu Sastra Dewangga Caecilia Pujiastuti Chaterine Oktavia Anggaraeni Devi Diyah Ayu Prameswari Dewangga, Bayu S. Dewi Maya Maharani Dian Nuraini Dita Prariesta DWI LESTARI, WAHYU Dyah Siswanti Dyah Suci Perwitasari Edahwati, Wahyu Dwi Lestari Erwan Adi Saputro Faizin, Ahmad Khairul Falah, Ra Niyatul Fatkhurrohman Fatkhurrohman Fauziah Hilda Alvira Fauziah Hilda Alvira Fauziah, Maria Rizky Ferdi Kurniawan Feriyanto, Ahmad Fransisca Adya Zahiroh Gobel, Fendy Faizal Harya, Gyska Indah Herdiana Septiani Herdiana Septiani Ika Nawang Puspitawati Ikaputri, Aninda Indah N. F. Indah Nur Fauziyah Issafira, Radissa Dzaky Jayan Sentanuhady Joanne Rizma Pramitha Kalimatus S Kartika Pratiwi Kurniawan, Ferdi L.Urip Widodo, Yohandrik Novel Karaman Lusy Larasati A Lusy Larasati A M Danny Pratama Lamura Maria Rizky Fauziah Maria Vindri Vincensia Saru Moch Miftakhurrohman Mochammad Alief Setyanugraha Moh Nur Fuadzi Mohammad Rafli Alif Wahyudi Mr. Sutiyono Muhammad Ikhsan Muhammad Taqiyyuddin Munandar, Siswanto Musyaroh, Musyaroh Mutiya Zevi Nana Dyah Siswati, Anwar Zain and Mohammad Nandini, Atika Nazila Alfi Rahmah Ndaru Adyono Ndaru Adyono Ndaru Adyono Ndaru Adyono, Ndaru Nikmatuz Zahra Nikmatuz Zahra Novel Karaman Novel Karaman Nur Fuadzi, Moh Nur Ikhtiarini Prayoga, Ferdiyan Tri Puspa Sari, Tria Qanitah Nibras Firmaniya Ra Niyatul Falah Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Radissa Dzaky Issafira Rahmah, Nazila Alfi Rahmaniar Naulita Hutagalung Reva Edra Nugraha Reyhan Firmansyah Rifaldo Pido Rizaldi, Ryan Rizqa Ruviana Rizqa Ruviana Rizqi Rendri Anggriawan Rizqi Rendri Anggriawan Rizqi Rendri Anggriawan S D Nurherdiana S Sutiyono S, Sutiyono Sari, Tria Puspa Saru, Maria Vindri Vincensia Setyanugraha, Moch. Alief Shinta Soraya Santi Siti Robiatuz Zahrotun Nukhuf Soemargono Soemargono Sri Muljani Sri Redjeki Srie Muljani Srie Muljani SRIE MULJANI Srie Muljani Suhaili Sulaiman, Yusri Risyad Suprihatin Susilowati Susilowati MT Susilowati Susilowati Sutiyono Sutiyono . Sutiyono Sutiyono sutiyono sutiyono Titi Susilowati Tria Puspa Sari Tutuk Harsini Wahyu Dwi Lestari Wahyu Dwi Lestari Wahyu Dwi Lestari Edahwati Wahyudi, Mohammad Rafli Alif Widya Wijayanti Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Wiliandi Saputro Willie Prasidha Zevi, Mutiya