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All Journal Jurnal Teknik Industri Jurnal Pengajaran MIPA Indonesian Journal of Science and Technology IJoLE: International Journal of Language Education Communications in Science and Technology Jurnal Kartika Kimia Molekul: Jurnal Ilmiah Kimia JEDCHEM (JOURNAL EDUCATION AND CHEMISTRY) Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Acta Chimica Asiana Science Midwifery Journal of Tropical Chemistry Research and Education Jurnal Abdimas Kartika Wijayakusuma Asean Journal of Science and Engineering (AJSE) ASEAN Journal of Science and Engineering Education (AJSEE) Indonesian Journal of Multidiciplinary Research (IJoMR) Indonesian Journal of Community and Special Needs Education (IJCSNE) Indonesian Journal of Educational Research and Technology (IJERT) Indonesian Journal of Teaching in Science International Journal of Informatics, Information System and Computer Engineering (INJIISCOM) International Journal of Research and Applied Technology (INJURATECH) Automotive Experiences Journal of Mechanical Engineering, Science, and Innovation CHEMTAG Journal of Chemical Engineering Fraction: Jurnal Teori dan Terapan Matematika Journal of Engineering Environtmental Energy and Science Journal of Educational Sciences Indonesian Journal of Limnology Open Global Scietific Journal Jurnal Inovasi Teknologi Manufaktur, Energi dan Otomotif ASEAN Journal for Science and Engineering in Materials ASEAN Journal of Educational Research and Technology
Ragadhita, Risti
Universitas Pendidikan Indonesia
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DESAIN REAKTOR UNTUK PRODUKSI NANOPRATIKEL PERAK DALAM MEDIA POLIMER ALAMI Tria Nurwina Novianti; Asep Bayu Dani Nandiyanto; Risti Ragadhita
JEDCHEM (JOURNAL EDUCATION AND CHEMISTRY) Vol 5 No 1 (2023):  Jurnal Pendidikan, Pendidikan Kimia, dan Ilmu Kimia
Publisher : LEMBAGA PENELITIAN DAN PENGABDIAN MASYARAKAT (LPPM) UNIKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/jedchem.v5i1.2774

Abstract

The aim of this research is to design a reactor for the production of silver nanoparticles in natural polymeric media. The method used is to perform computational analysis to obtain a reactor design with specifications for a total reactor volume of 304.865 ft3, vessel diameter of 73.29 in, cylinder liquid volume of 92.87 in, design pressure of 18.97 psia, cylinder thickness of 73.44 in, height cylinder 10.77 ft, lid dimension 12.38 in, and lid dimension 21.18 in. These results are obtained according to calculations assuming the input mass is enlarged 100x from the reference journal used. This research can be used as a standard for making reactors to produce silver nanoparticles in natural polymeric media.
DESAIN REAKTOR LIQUID-PHASE UNTUK PRODUKSI SINTESIS NANOPARTIKEL FE3O4 MENGGUNAKAN EKSTRAK DAUN SIRIH MERAH (piper crocatum) SEBAGAI CAPPING AGENT Nyoman Ayu Kristinawati; Asep Bayu Dani Nandiyanto; Risti Ragadhita
JEDCHEM (JOURNAL EDUCATION AND CHEMISTRY) Vol 5 No 1 (2023):  Jurnal Pendidikan, Pendidikan Kimia, dan Ilmu Kimia
Publisher : LEMBAGA PENELITIAN DAN PENGABDIAN MASYARAKAT (LPPM) UNIKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/jedchem.v5i1.2777

Abstract

The aim of this study was to design a liquid-phase reactor for the production of synthesized Fe3O4 nanoparticles using red betel leaf extract (Piper Crocatum) as a capping agent. The reactor model is assumed to have a production capacity of 60,000 tonnes per year, 220 tonnes per day at 2.680 kg/hour. The ratio of the amount of red betel leaf extract, FeCl3.6H2O, FeCl3.6H2O, and NaOH catalyst respectively is 20:8:4:1. Data analysis was obtained through manual calculations using the basic Microsoft Excel application. The selected reactor is a Continuous Stirred Tank Reactor (CSTR). Reactor volume (80%) is 325 ft3 with a height of 38.6 in. The dimensions of the stirrer (stirrer) are also calculated, the results of several parameters are the impeller diameter (Da) of 19.76 in, impeller height from tank bottom (c) of 13.5 in, impeller length (l) of 4.45 in and stirring power (p) of 4.33 hp. These results have not been analyzed in terms of thermodynamics such as ∆Hf and ∆Gf calculations to see whether the reaction is exothermic or endothermic, so it needs further study. However, the results of this analysis can be used as learning media in the process of designing, operating mechanisms and analyzing the performance of CSTR reactors.
RANCANGAN CONTINUOUS STIRRED TANK REACTOR UNTUK SINTESIS NANOPARTIKEL WO3 Maya Lianawati; Asep Bayu Dani Nandiyanto; Meli Fiandini; Risti Ragadhita
JEDCHEM (JOURNAL EDUCATION AND CHEMISTRY) Vol 5 No 1 (2023):  Jurnal Pendidikan, Pendidikan Kimia, dan Ilmu Kimia
Publisher : LEMBAGA PENELITIAN DAN PENGABDIAN MASYARAKAT (LPPM) UNIKS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36378/jedchem.v5i1.2793

Abstract

This research aim to develop a continuous stirred tank reactor (CSTR) in the meant to produce WO3 nanoparticles. A manual calculations was done using Microsoft Excel. The result obtained CSTR with a tank designed with volume 1301.14 m3 volume, height 1.26 m, and 1.19 designed hydrostatic pressure. The reactor also equipped with 1 stirrer with length 0.23 m and width 0.18 m. This study expected to be useful reference for production of WO3 nanoparticles in industrial scale.
How to Calculate Adsorption Isotherms of Particles Using Two-Parameter Monolayer Adsorption Models and Equations Risti Ragadhita; Asep Bayu Dani Nandiyanto
Indonesian Journal of Science and Technology Vol 6, No 1 (2021): IJOST: VOLUME 6, ISSUE 1, April 2021
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v6i1.32354

Abstract

Adsorption isotherm is the most important calculation to predict and analyze the various possible mechanisms that occur in adsorption process. However, until now, most studies only presented the adsorption isotherm theory, and there are no studies that explain the adsorption isotherm thoroughly and in detail from theory to calculation. Therefore, this study contains guidelines for selecting the type of adsorption isotherm to describe the entire adsorption data set, which is featured by the ten most common adsorption isotherms. The steps of how to analyze the two-parameter monolayer adsorption are presented. This study is expected to provide clear and useful information for researchers who are working and studying on the adsorption process.
Desain Reaktor untuk Produksi Nanopartikel Nikel Ferit (NiFe2O4) Sifa Aulia Rahma; Asep Bayu Dani Nandiyanto; Risti Ragadhita
Journal of Engineering Environmental Energy and Science Vol 2 No 1 (2023): January 2023
Publisher : Fakultas Teknik, Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/joes.v2i1.1818

Abstract

Tujuan dari penelitian ini adalah untuk merancang reaktor sederhana tipe Continous Stirred Tank Reactor (CSTR) dan menganalisis reaktor melalui analisis komputasi dengan menghitung reaktor, pengaduk yang digunakan dan neraca massa menggunakan Microsoft Excel. Berdasarkan hasil perhitungan dimensi reaktor CSTR, diperoleh tekanan design sebesar 44,61 psig, tebal dan tinggi tabung silinder masing-masing 0,14 in dan 85,46 in, ketebalan tutup atas dan bawah tabung silinder adalah 0,15 in dan 0,23 in begitu pun ketinggian tutup atas dan bawah tabung silinder sebesar 9,63 in dan16,47 in serta tinggi reaktor sebesar 114,06 in. Tidak hanya itu, reaktor juga dilengkapi 1 pengaduk dengan diameter, tinggi, panjang dan lebar berturut-turut 28,49 in, 18,99 in, 7,12 in dan 5,70 in dengan daya pengadukan pada prosesnya sebesar 32,73 Hp. Penulisan artikel ini diharapkan menjadi referensi yang bermanfaat sebagai metode pembelajaran perancangan reaktor untuk menghasilkan produk nanopartikel nikel ferit (NiFe2O4) yang berpuluh ribu kali lebih besar dari skala laboratorium.
How to Calculate and Measure Solution Concentration using UV-Vis Spectrum Analysis: Supporting Measurement in the Chemical Decomposition, Photocatalysis, Phytoremediation, and Adsorption Process Asep Bayu Dani Nandiyanto; Risti Ragadhita; Muhammad Aziz
Indonesian Journal of Science and Technology Vol 8, No 2 (2023): (ONLINE FIRST) IJOST: September 2023
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v8i2.57783

Abstract

UV-visible (UV-Vis) spectroscopy is a powerful instrument for qualitative investigation and quantitative detection of pollutants in water. UV-Vis spectrophotometry is an analytical method using the concept of transmission of light in UV and Visible wavenumber. Generally, compounds can be identified using UV-Vis Spectrophotometry, based on the concept of light absorption, specifically for compounds with a chromophore group and an auxochrome group. Although the utilization of UV-Vis spectrum analysis has been well-documented, no information regarding detailed step-by-step measurement for examining detailed quantitative analysis, particularly in determining the concentration of an analyte in an aqueous solution sample. Here, this study explores the idea and application of UV-Vis technology in water quality detection, including guidelines for determining the concentration of the sample in an aqueous solution. To support the analysis, we also added practical examples for understanding concentration during the organic decomposition. This paper is intended to be useful for researchers and students in understanding UV-Vis spectrophotometry when analyzing chemical composition during chemical decomposition, photocatalysis, phytoremediation, and adsorption analysis.
Techno-Economic Analysis of the Production of Magnesium Oxide Nanoparticles Using Sol-Gel Method Anisa Noorlela; Asep Bayu Dani Nandiyanto; Risti Ragadhita; Meli Fiandini; Tedi Kurniawan
Journal of Mechanical Engineering, Science, and Innovation Vol 3, No 1 (2023): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2023.v3i1.3870

Abstract

The purpose of this research is to determine the feasibility of a project in producing magnesium oxide (MgO) nanoparticles using the sol-gel method and to evaluate it from a technical and economic point of view. The sol-gel method is a method that is often used by industry because the process is simpler. Assessment from a specialized point of see is done by calculating the stoichiometry, whereas assessment from a financial viewpoint is decided by a few parameters, such as deciding Gross Profit Margin (GPM), predicting Payback Period (PBP), predicting Cumulative Net Present Value (CNPV), etc. The results of the technical analysis appear that the overall fetched of the gear to create 1,875 kg of MgO nanoparticles per day is 45,373 USD. Payback Period analysis appears that the venture pays off after more than three a long time. This venture is able to compete with PBP capital advertise measures since the venture will return in a brief time. Based on the economic evaluation, it can be concluded that this project is very promising if it is anticipated that losses will occur due to changes in several ideal conditions. The result of this study about are anticipated to be a reference for building more economical, efficient and high-demand MgO nanoparticle production projects.
How to Purify and Experiment with Dye Adsorption using Carbon: Step-by-Step Procedure from Carbon Conversion from Agricultural Biomass to Concentration Measurement Using UV Vis Spectroscopy Asep Bayu Dani Nandiyanto; Meli Fiandini; Risti Ragadhita; Muhammad Aziz
Indonesian Journal of Science and Technology Vol 8, No 3 (2023): (ONLINE FIRST) IJOST: December 2023
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijost.v8i3.58290

Abstract

This paper contains guidelines and provides a basic understanding of how to do experiments in dye adsorption using carbon. This paper presents a step-by-step experimental procedure from carbon preparation (as biochar) from agricultural waste to concentration measurement using UV-Vis Spectroscopy. We used agricultural waste as a model due to its high cellulose and organic content, making it easily converted into carbon. This paper can be used as a guide for researchers and students in the fabrication of carbon from agricultural waste biomass easily and inexpensively for its application as an adsorbent in the batch adsorption process. This paper also supports the current issues in Sustainable Development Goals (SDGs).
Cost Analysis and Economic Evaluation for The Fabrication Activated Carbon Nanomaterials from Durian Seeds Utilizing Ionic Liquids Andika Purnama Shidiq; Asep Bayu Dani Nandiyanto; Risti Ragadhita; Meli Fiandini
Open Global Scientific Journal Vol. 2 No. 1 (2023): Open Global Scientific Journal
Publisher : Research and Social Study Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70110/ogsj.v2i1.17

Abstract

Waste Agricultural Biomass (WAB) is a challenging problem in this modern era. The purpose of this study was to evaluate the economic feasibility of manufacturing carbon nanomaterials from durian waste biomass using ionic liquids. Several economic evaluation parameters are analyzed to inform the production potential of valuable materials from Biomass. The results showed that the production of carbon nanoparticles from biomass is quite prospective. Technical analysis for converting 250 kg of waste durian seeds shows the total cost of the equipment purchased was USD 12,086. Adding the Lang Factor, the total investment cost should be less than USD 53,661. This value is relatively economical (ie the project requires less investment funds) to reduce 75 tons per year or 100 tons per 20 project years. Compared to the total amount of degraded durian seed waste, the value is only around 18 USD per ton. Indeed, it is inexpensive to access a problem solver in degrading a ton of durian seed waste. To ensure project feasibility, projects are assessed from ideal to worst conditions in production, including labor, sales, raw materials, utilities, and external conditions (ie, taxes and subsidiaries).
How Language and Technology Can Improve Student Learning Quality in Engineering? Definition, Factors for Enhancing Students Comprehension, and Computational Bibliometric Analysis Dwi Fitria Al Husaeni; Dwi Novia Al Husaeni; Risti Ragadhita; Muhammad Roil Bilad; Abdulkareem Sh. Mahdi Al-Obaidi; Asep Bayu Dani Nandiyanto
International Journal of Language Education Vol 6 No. 4, 2022
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/ijole.v6i4.53587

Abstract

The research aims to review developments in language and technology research that can improve the quality of teaching and learning in engineering. Several factors that can influence the teaching and learning process are explained, supported by a bibliometric analysis (with keywords “Language” AND “Engineering Learning” from Google Scholar from 2020 to 2022). The review includes the definition of engineering education with technology's advantages in engineering education. We also explained about purpose and service of language with what considerations in making strategies in language and technology for teaching and learning engineering education. Explanations about formal and informal learning as well as education level to learn engineering and curriculum development were also added. The application of technology in media and laboratories is also the main factor in improving literacy and language's impact on students. All factors cannot be separated from language and student characteristics, motivation, teacher-student relationships, therapy, and psychological condition. We also added information regarding language barriers for students with special needs and new language-improving technology for teaching. The results of the co-occurrence analysis expressed several points to be considered, including children, mathematics, STEM, education, and educators’ terms. Thus, it obtained that the principle of engineering education refers to the process of teaching and learning about scientific concepts, principles, and practices, and technology plays an important role because it is closely related to scientific principles and investigative methods. Language has an important role in supporting students' understanding and abilities in this subject since it conveys learning information. This paper can be used as a reference for educators to understand current conditions regarding the importance of language in the teaching and learning in the engineering field.
Co-Authors A Nurdiana Abdulkareem Sh. Mahdi Al-Obaidi Abdulkareem Sh. Mahdi Al-Obaidi Abidin, Muhamad Adani Ghina Puspita Sari Adzra Zahra Ziva Agus Kamaludin, Agus Ahmad Aminudin Al Husaeni, Dwi Fitria Al Husaeni, Dwi Novia Al-Obaidi, Abdulkareem Sh. Mahdi Anceu Murniati Andika Purnama Shidiq Andika Purnama Shidiq Andri Syah Putra Anisa Noorlela Arif Hidayat Asep Bayu Dani Nandiyanto Asep Supriatna, Asep Astuti, Asita Puji Aulia Rahma, Sifa Bilad, M. Roil Bilad, Muhammad Roil Budi Susetyo Citra Nurhashiva Citra Nurhashiva Dewi, Mauseni Wantika Dian Usdiyana Dwi Novia Al Husaeni Dwi Novia Al Husaeni Eddy Soeryanto Soegoto Endang Rusyani Fadhillah, Farid Fatimah, Siti Fauzi, Fajar Miraz Fauzia Nur Awaliah Fiandini, Meli Fika Annisa Sabrina Fitri Febriyanti Hafidh, Ashary Fathul HERNANI - Hernawati, Ati Hofifah, Siti Nur Indra Mamad Gandidi Intan Febriani, Lidia Irine Sofianty Jessica Veronica L Astuti Lianawati, Maya Lidia Intan Febriani Mahmudatussa'adah, Ai Maya Lianawati Meli Fiandini Mentari Putri Aprilia Mia Widyaningsih Muhammad Aziz Muhammad Aziz Muhammad Roil Bilad Muji Setiyo Nia Sutisna, Nia Noorlela, Anisa Nurhashiva, Citra Nyoman Ayu Kristinawati Obaidi, Abdulkareem Sh. Mahdi Al Obie Farobie Piantari, Erna R P Dewi Ratnengsih, Een Rina Maryanti Rizky, Karina Mulya Rofi Fadilah Madani Rosi Oktiani Rusyani, Endang Saepulloh, Anwar SAKINAH, PUTRI Salsabila, Annisa Rizky Santiuly Girsang, Gabriela Chelvina Sidik, Adi Permana Sifa Aulia Rahma Siti Sriyati Sri Anggraeni Sri Rahayu Sukrawan, Yusep Syarafah, Karina Nur Syazwany, Aisha Nadhira Syuhada, Themy Sabri Tedi Kurniawan Tedi Kurniawan Tedi Kurniawan Tedi Kurniawan Tedi Kurniawan Teguh Kurniawan Teguh Kurniawan Tria Nurwina Novianti Veronica, Jessica Wafa Raihana Arwa Widyaningsih, Mia Winny Liliawati Yuni Kartika Suryana Yusrianti Sabrina Kurniadianti Yustika Desti Yolanda