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All Journal Jurnal Ilmu Lingkungan Jurnal Penelitian dan Pengembangan Sains dan Humaniora (JPPSH) Jurnal Teknik Kimia TEKMAPRO Journal of Industrial Engineering and Management Scan : Jurnal Teknologi Informasi dan Komunikasi Proceeding International Conference on Information Technology and Business JURNAL INTEGRASI PROSES International conference on Information Technology and Business (ICITB) Konversi IJEMS (Indonesian Journal of Environmental Management and Sustainability) Chemistry Indonesian Journal of Chemical Research Journal of Education Action Research Jurnal Inovasi Teknik Kimia G-Tech : Jurnal Teknologi Terapan Nusantara Science and Technology Proceedings International Journal of Eco-Innovation in Science and Engineering (IJEISE) Quimica : Jurnal Kimia Sains dan Terapan Jurnal Teknik Kimia Indonesia AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Seminar Nasional Ilmu Terapan Journal Serambi Engineering (JSE)
Ni Ketut Sari
Department Of Chemical Engineering, Universitas Pembangunan National “Veteran” Surabaya, East Java, Indonesia
Agriculture, Biological Sciences & Forestry 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 Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Public Health Social Sciences Other

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Prototype of Synchronous Double Brushless Direct Current Motor Wahyu S. J. Saputra; Eva Yulia P; Ni Ketut Sari
Nusantara Science and Technology Proceedings International Seminar of Research Month Science and Technology in Publication, Implementation and Co
Publisher : Future Science

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Abstract

Energy is one of the main needs in the current era. According to the law of conservation of energy, that energy can neither be created nor destroy, but energy can be change from one form to another. Energy can classify into two forms: the silent energy called the potential energy, and the moving energy called kinetic energy. The potential energy usually stored in raw energy sources are petroleum, coal, or still air. Kinetic energy usually stored in a negative energy source is wind or running water. Electricity is one form of energy that is widely used for various purposes a day. A lot of energy that turns into a form of electrical energy, one of which is petroleum. To simulate electrical goods by using electric energy more effectively. This paper a series of Double Brushless Direct Current Motor (BLDC) was create, to produce more effective motion energy in the utilization of electrical source. The prototype of this paper uses two equal BLDCs motor, one motor used as an AC generator to provide feedback from the resulting results. It expected that this prototype can be used as a tool of motion with effective electrical energy.
Shelf-life Prediction of Soneca Using Accelerated Shelf-life Tests Approach to Critical Water Levels Jariyah; Shafira Suci Utami; Ni Ketut Sari; Kusuma Wardhani Mas’udah
Nusantara Science and Technology Proceedings 2nd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

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Abstract

Shelf life is information that must be included in food product packaging. Estimated shelf life of food products can be done conventionally (Extended Storage Studies) and acceleration (Accelerate Shelflife Testing). Estimation of shelf life by ASLT can be done using the critical moisture content approach, especially for products easily damaged by water absorption. The purpose of this study was to determine the shelf life of Soneca biscuits packaged using three different packages, namely Polypropylene (pp) plastic packaging, Metalized Plastic, and Aluminum foil. The method of determining the shelf life used in this study uses the ASLT method with a critical moisture content approach. Based on the research, it is known that the critical moisture content of biscuits is obtained when the product moisture content reaches 0.0812 (g H2O/g). The isothermic sorption curve of the biscuits obtained can be appropriately expressed using the Hasley model equation. Estimation of shelf life was carried out under storage conditions at 30 oC and 75% RH. The study results show that the predicted shelf life of biscuits with metalized plastic VM-PET packaging is 17.76 months, with aluminum foil packaging is 19.85 months and using PP plastic packaging is 1.72 months. Therefore, it is known that the best shelf life is the use of aluminum foil packaging.
Simulation of Activity Coefficient System Ternary in Acetone Buthanol Ethanol with Uniquac Equation Sari Ni Ketut; Dira Ernawati
Prosiding International conference on Information Technology and Business (ICITB) 2017: INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY AND BUSINESS (ICITB) 3
Publisher : Proceeding International Conference on Information Technology and Business

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Abstract

Simulation of activity coefficients ternary systems using matlab programming language, which results in the appearance of the graph using a spreadsheet tool, less effective and efficient, so it is necessary for the visualization of object-oriented programming language, in addition to easy to be developed at a time when that will come, it has other benefits, in a device project software can use a variety of programming language that supports object-oriented programming, such as C#.Net and VB.Net. This research aims to display the batch distillation simulation of visual binary systems using object-oriented programming. Ethanol buthanol ethanol non azeotropic ternary system, simulation of activity coefficients with rigorous method using a model Differential-Algebraic-Equations (DAEs), where the completion of the model using the language C#.Net, the basic concepts of object-oriented programming consists of classes, objects, abstraction, encapsulation, polymorphism. Antoine parameter data and activity coefficients derived from experimental data. Dimension less time and pressure are set constant, while the variable composition liquida. Profile of liquida composition and vapor composition function dimensionless can be displayed directly from the desktop, to have the non azeotropic ternary system value profile activity coefficient is not equal to one, while the ternary system non azeotropic approaching one. Profile of liquida composition and vapor composition maximum from ternary system non azeotropic is 0.98, while for the ternary system non aeotropic approaching one. Economically using C#.Net language faster, time efficiency and better performance profile. Keywords: Activity coefficients, C#.Net, DAEs, rigorous method, ternary systems
Supply Chain Performance Measurement in a Refractory Brick Industry Dira Ernawati; Sinta Dewi; Ni Ketut Sari
Nusantara Science and Technology Proceedings 3rd International Conference Eco-Innovation in Science, Engineering, and Technology
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2022.2726

Abstract

Every company needs to optimize and improve its performance. Performance improvement strategies cannot be well formulated if there has never been a performance measurement itself before. Determining the overall condition of the company can be done by assessing the performance of the entire lines of the supply chain. The SCOR model is considered appropriate for complex supply chain activities because it has a measurement process of plan, source, make, deliver, and return. The scale for each process in the supply chain is different, so the Snorm De Boer normalization technique is applied to equalize the assessment units for each criterion. Based on the performance indicator (PI) calculation, six PIs scores are below the average performance. Those six Pis are raw material planning, production planning, planning cycle time, yield, product defect from production, and the number of equipment maintenance. The six PIs are assessment indicators for the planning process and production process, so an improvement of the management system for both activities is essential to be carried out immediately to improve overall supply chain performance.
EKSTRAKSI NIKEL DARI BIJIH NIKEL LATERIT SOROWAKO DENGAN ASAM NITRAT Tathmainnul Qulub Al Asrori; Hana Nabila Putri; Ni Ketut Sari
Jurnal Inovasi Teknik Kimia Vol 7, No 2 (2022)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v7i2.6501

Abstract

Indonesia merupakan negara yang kaya akan sumber daya mineral berupa bijih nikel laterit. Bijih ini merupakan sumber utama logam nikel yang banyak dimanfaatkan dalam industri kimia salah satunya dalam pembuatan baja tahan karat. Salah satu cara pengolahan yang dapat dilakukan adalah proses ekstraksi padat-cair (leaching) pada kondisi atmosferis. Pada penelitian ini, dilakukan ekstraksi nikel dari bijih nikel laterit yang diperoleh dari Sorowako menggunakan pelarut asam nitrat yang bertujuan untuk mengetahui suhu dan konsentrasi asam nitrat optimum dalam proses ekstraksi. Penelitian ini dilakukan dengan memvariasikan suhu operasi sebesar 50℃, 60℃, 70℃, 80℃, 90℃ dan konsentrasi asam nitrat 3M, 4M, 5M, 6M, 7M. Analisis kandungan nikel hasil leaching dilakukan menggunakan Atomic Absorption Spectroscopy (AAS) yang kemudian dioptimasi dengan menggunakan metode Response Surface Methodology (RSM) menggunakan aplikasi Minitab 19. Hasil penelitian menunjukkan bahwa suhu dan konsentrasi asam nitrat berpengaruh terhadap perolehan nikel. Kenaikan suhu dan konsentrasi asam nitrat akan meningkatkan perolehan nikel. Hasil terbaik pada proses ekstraksi yaitu pada konsentrasi asam nitrat 7M dan suhu 90℃ dengan perolehan nikel sebesar 80,73%. Setelah dilakukan proses optimasi hasil dengan metode Response Surface Methodology (RSM) menggunakan aplikasi Minitab 19 didapatkan persentase nikel terekstrak optimum sebesar 80,8727% pada konsentrasi HNO3 8,2M dan suhu 98,5℃.
PENGARUH VOLUME FILTRAT GLUKOSA DAN TURBO YEAST PADA PEMBUATAN BIOETANOL DARI LIMBAH CAIR TEPUNG TERIGU Yustica Chandra Kania; Fernanda Andika Arya Revandana; Ni Ketut Sari
Jurnal Inovasi Teknik Kimia Vol 8, No 2 (2023)
Publisher : Fakultas Teknik Universitas Wahid Hasyim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31942/inteka.v8i2.8087

Abstract

Kandungan pati yang cukup tinggi dalam limbah cair tepung terigu berpotensi dapat dimanfaatkan menjadi produk bioetanol. Dalam studi penelitian ini, produksi bioetanol berbasis fermentasi anaerob selama 5 hari menggunakan Turbo Yeast dikembangkan untuk mengolah limbah cair industri tepung terigu menjadi bioetanol. Penelitian ini bertujuan untuk mengkaji pengaruh volume filtrat glukosa hasil hidrolisis limbah cair tepung terigu dan rasio Turbo Yeast terhadap volume filtrat glukosa pada pembuatan bioetanol. Penelitian dijalankan dengan variasi volume filtrat glukosa hasil hidrolisis 50mL, 100mL, 150mL, 200mL, dan 250 mL serta rasio Turbo Yeast terhadap volume filtrat glukosa 1:20, 1:40, 1:60, 1:80, dan 1:100. Parameter keberhasilan penelitian dinilai melalui kadar bioetanol yang dihasilkan masing- masing sampel pada proses fermentasi. Kadar bioetanol tertinggi didapatkan sebesar 41% pada variasi volume filtrat 200 mL dan rasio Turbo Yeast terhadap volume filtrat 1:20. Hasil penelitian menunjukkan bahwa semakin banyak Turbo Yeast yang digunakan maka kadar bioetanol yang dihasilkan semakin besar sementara kadar bioetanol akan menurun seiring dengan meningkatnya volume filtrat glukosa hasil hidrolisis
Application of Kansei Engineering to Capture Consumer Demand for Cooking Oil Product Packaging Komang Nickita Sari; Maria Anityasari; Ni Ketut Sari; I Komang Tri Musthika
International Journal of Eco-Innovation in Science and Engineering (IJEISE) Vol. 4 No. 1 (2023): IJEISE
Publisher : International Journal of Eco-Innovation in Science and Engineering (IJEISE)

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Abstract

Plastic food packaging has become a part of human daily life. The management of plastic waste is a matter of concern due to its potential which is difficult to decompose. This condition causes all producers to have a responsibility not only during the manufacturing process but until the end of the life of their products. This expanded responsibility is called EPR (Extended Producer Responsibility). Therefore the resulting packaging design becomes a breakthrough in this matter. This research attempts to apply the Kansei Engineering method to capture customers' emotional needs from consumers in compiling plastic packaging design parameters. The research method in this paper uses the Kansei Engineering method, namely by collecting Kansei words from respondents at random, then the Kansei words are reduced. The reduced Kansei word will be synthesized to produce quality attributes that are able to meet the customer's emotional needs. The Kansei words obtained from the survey results are 55 words. Packaging quality attributes that have met the customer's emotional needs include protection, refillable, recyclable, biodegradable, food safety, additional function, attractiveness, conformity, ergonomic, user friendly, and content declaration (on the packaging label).
Pembuatan Asam Oksalat dari Sekam Padi Menggunakan Proses Hidrolisis Dimas Hafidz Maulana; Jonathan Fayol Sinaga; Ni Ketut Sari
JURNAL QUIMICA Vol 6 No 1 (2024)
Publisher : Program Studi Kimia, Fakultas Sains dan Teknologi, Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33059/jq.v6i1.9708

Abstract

Produksi padi untuk memenuhi kebutuhan semakin meningkat setiap tahun yang menyebabkan banyaknya limbah sekam padi yang dihasilkan. Sekam padi pada penelitian ini mengandung selulosa 26,93% dan lignin 14,07%. Tujuan penelitian adalah untuk menemukan konsentrasi NaOH dan waktu lama pengadukan yang terbaik pada pembuatan asam oksalat dari sekam padi, serta mencari kadar asam oksalat yang dihasilkan dari sekam padi. Variabel peubah dalam penelitian adalah beberapa konsentrasi NaOH yaitu 2N, 3N, 4N, 5N, 6N serta waktu lama pengadukan yaitu 30 menit, 45 menit, 60 menit, 75 menit serta 90 menit. Penelitian ini dimulai dengan proses hidrolisis menggunakan NaOH, pengendapan menggunakan CaCl2, dilanjutkan pengasaman menggunakan H2SO4, lalu dilakukan analisa kadar menggunakan metode titrasi permanganometri. Setelah itu, hasil penelitian dilakukan proses optimasi dengan Response Surafce Methodology menggunakan Minitab. Konsentrasi NaOH dan waktu pengadukan terbaik yaitu pada konsentrasi NaOH 5N dan waktu lama pengadukan 75 menit dengan kadar asam oksalat yang diperoleh sebesar 11,661%.
PENERAPAN SISTEM INFORMASI PRESENSI MAHASISWA BERBASIS MOBILE APPS PADA UNIVERSITAS X Suryanto, Tri Lahtif Mardi; Faroqi, Asif; Sari, Ni Ketut
Seminar Nasional Ilmu Terapan Vol 2 No 1 (2018): Seminar Nasional Ilmu Terapan (SNITER) 2018
Publisher : Universitas Widya Kartika Surabaya

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Abstract

Peningkatan mutu pelayanan era digitalisasi kini menjadi salah satu acuan keberhasilan dalam Institusi, dengan adanya perkembangan TIK yang sangat cepat Institusi dituntut untuk dapat menggunakan dan mengoptimalkan potensi yang dimiliki dalam rangka meningkatkan mutu pelayanan Universitas. Tuntutan dan tantangan dalam memberikan mutu pengalaman pendidikan dirasa perlu menjadi prioritas, begitu juga dengan kegiatan pencatatan presensi mahasiswa merupakan salah satu aktifitas yang mendapat sorotan bagi peningkatan pelayanan akademik, pada Universitas X kesalahan inputan presensi mahasiswa dapat berpengaruh terhadap kelayakan dalam mengikuti ujian dan perolehan nilai akhir. Tidak adanya sistem yang integrasi dapat menjadikan komplain baru disetiap semesternya, maka solusi penerapan sistem informasi dianggap tepat untuk diterapkan dalam proses pencatatan presensi mahasiswa. Penerapan sistem informasi ini dirancang dan dibangun berdasarkan kebutuhan fungsionalnya. PHP dan HTML 5 digunakan untuk membangun aplikasi Sistem Informasi Presensi Mahasiswa. Agar perbaruan data dapat dilakukan dengan fungsionalitas yang tepat maka ditambahkan layanan webservice sebagai server aplikasi SIMAMA yang kemudian dapat dioperasikan menggunakan telepon pintar setiap dosen pengampu. Penerapan SIMAMA ini dapat memberikan pelayanan pencatatan secara digital dan transparansi presensi mahasiswa dalam kegiatan belajar mengajar.
Optimization of Glucose from Saccaromycess cerevicae Liquid Waste Using the Acid Hydrolysis Process Sari, Ni Ketut; Ernawati, Dira; Sari, Komang Nickita
Nusantara Science and Technology Proceedings 8th International Seminar of Research Month 2023
Publisher : Future Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/nstp.2024.4103

Abstract

Selection of Saccharomyces Cereviceae (SC) wastewater as a component produced by PT. Enero comes from a fermentation process that uses SC yeast, it’s availability is great and it has not been used as a raw material for glucose, which until now has been industrial waste. Efforts have been made to convert SC waste water into liquid fertilizer and biodiesel feedstock. The recovery of glucose from SC waste water in the chemical hydrolysis process using the reaction surface method (RSM), the hydrolysis process was carried out with a digital stirrer at a rotation speed of 200 rpm and the addition of 5 ml of 10% NaOH. The variables used were 50–250 mL SC waste water and 10–30 mL HCl volume. The optimization results using RSM of the chemical hydrolysis process are shown in three-dimensional graphs, pH and SC waste water ratio and HCl volume, glucose content and SC waste water ratio and HCl volume. The best results with SC waste volume of 8.58 mL and HCl volume of 34.14 mL achieved a pH of 4.38. In order to achieve a pH of 4.5, a hydrolysis process is carried out because the pH of the SC waste water is very acidic, i.e. 3.5, and 10% NaOH is added to increase the pH. The result of glucose from the hydrolysis process is 17.96%, the required volume of waste water SC of 137.14 ml, the addition of 34.14 ml of HCl as a raw material for the fermentation process. Based on the optimization results using RSM and chemical hydrolysis method, the glucose content is 17.96% and the pH is 4.38 with the SC water waste volume of 137.14 mL and the HCl volume of 34.14 mL.
Co-Authors Ahmad Rizky Safrudin Anggraeni, Verendria Putri Caesar Asif Faroqi Atha Mardhi Maulana Athobarani, Akmal Bachtiar, Sofi Baihaqi, Muhammad Nizammudin Destyano, Azel Dharmawan, Valda Ashila Dimas Hafidz Maulana Dinda Putri Arnindi Dira Ernawati Dira Ernawati Erwan Adi Saputro Eva Yulia P Fadhilah, Said Ahmad Fathoni, Muhamad Uman Fatkhurin, Elma Fergilang, Jibraltar Fernanda Andika Arya Revandana Gemilang, Surya Hana Nabila Putri I Komang Tri Musthika Jalil, Mohd Jumain Jariyah Jonathan Fayol Sinaga Ketut Sumada Khurniawati, Khurniawati Komang Nickita Sari Kusuma Wardhani Mas’udah Laurentcya, Treyna Dara Lestari, Rowina Maria Anityasari Maria Anityasari Monica, Clarissa Putri Muhammad Ashfal Ashfiya Muhammad Zainul Fata Nisa, Assholihatun Nurhediana, Silvana Dwi Nurjaya, Luh Asri Ningsih Widhi P, Eva Yulia Pujiastuti, Caecilia Putri , Zahra Dzaki Roofia Rachma Putri Salsya Dilla Saputra, Wahyu S J Sari, Komang Nickita Shafira Suci Utami Silvana Dwi Nurherdiana Sinta Dewi Sintha Soraya Santi Suryanto, Tri Lahtif Mardi Suwandana, I Made Adi Syaiba Qurrotul Aini Tathmainnul Qulub Al Asrori Trianna, Nurul Widji Wahyu S. J. Saputra Wahyuningtiyas, Retno Wijaya, Miftachul Yogaswara, Rachmad Ramadhan Yustica Chandra Kania