Article Per Year (5 Year)
p-Index From 2021 - 2026
0.817
P-Index
This Author published in this journals
All Journal SainETIn Asean Journal of Science and Engineering (AJSE) Automotive Experiences Jurnal Inovasi Teknologi Manufaktur, Energi dan Otomotif
Risti Ragadhita
Unknown Affiliation
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Techno-economic Analysis on the Production of Zinc Sulfide Nanoparticles by Microwave Irradiation Method Azizah Nurdiana; Lydzikri Astuti; Rismaya Pramesti Dewi; Risti Ragadhita; Asep Bayu Dani Nandiyanto; Tedi Kurniawan
ASEAN Journal of Science and Engineering Vol 2, No 2 (2022): AJSE: September 2022
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1372.754 KB) | DOI: 10.17509/ajse.v2i2.37791

Abstract

Zinc sulfide is a semiconductor that is widely used in various fields. Synthesis of zinc sulfide nanoparticles by microwave irradiation method has promising prospects because of its advantages, such as commercially available precursors, short reaction times, low operating temperatures, and produced high quantity and high-quality products. The purpose of this study was to evaluate the feasibility of the production of zinc sulfide from zinc nitrate hexahydrate and thioacetamide by microwave irradiation method. The evaluation was done from the engineering and economic perspectives. The feasibility analysis method from the engineering perspective was done by designing the initial production design on a large scale, whereas the analysis from an economic perspective was done by calculating various economic parameters (i.e., Gross Profit Margin, Cumulative Net Present Value, Internal Rate Return, Payback Period, Break Event Point, and Profitability Index). The engineering perspective showed that the production of zinc sulfide nanoparticles can be done on a large scale due to the commercial availability of materials and tools. Based on the economic evaluation, this project is ideal for an industrial scale. The profits increased over 20 years and the payback period was achieved within two years. We hope this study can provide references to readers, industry, and researchers regarding the feasibility analysis of the production of zinc sulfide nanoparticles by microwave irradiation method on a large scale.
HEAT EXCHANGER DESIGN FOR THE GOLD NANOPARTICLES PRODUCTION IN INDUSTRIAL SCALE Erlangga, Thyta Medina Salsabila; Asep Bayu Dani Nandiyanto; Risti Ragadhita; Teguh Kurniawan
Jurnal Inovasi Teknologi Manufaktur, Energi dan Otomotif Vol. 1 No. 2 (2023): Jurnal Inovasi Teknologi Manufaktur, Energi, dan Otomotif
Publisher : Politeknik Negeri Banyuwangi

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

Abstract

This study aims to develop and analyze the design of heat exchangers in the production of gold nanoparticles (AuNPs) by the biosynthesis method using Sargassum horneri (SH) extract. The simple design of this heat exchanger (HE) uses the shell and tube type, the one-pass tube, and the fluids are water. Other specifications for a HE design are the tube length is 4.267 m, the shell diameter is 254 mm, the outer tube diameter is 22.225 mm, the inner tube diameter is 21.184 mm, the wall thickness is 2.1082 mm, and the pitch tube is 31.75 mm. Based on manual calculations using Microsoft Excel software, the results show that this design has laminar flow as indicated by the Reynolds value. In addition, the HE designs has an effectiveness value of 98.98% with an NTU value of 11.50. In this study, the HE designs results have a high effectiveness value, so it can be considered effective for use in producing gold nanoparticles with SH extract. Therefore, this HE designs analysis can be used as a learning medium in the HE designs process, the operating mechanism, and the performance analysis of the HE.
Desain Awal Reaktor untuk Produksi Nanopartikel Emas dengan Metode Turkevich pada Skala Industri Erlangga, Thyta Medina Salsabila; Asep Bayu Dani Nandiyanto; Risti Ragadhita; Teguh Kurniawan
SainETIn : Jurnal Sains, Energi, Teknologi, dan Industri Vol. 8 No. 2 (2024): SainETIn
Publisher : Teknik Elektro Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/sainetin.v8i2.12554

Abstract

Penelitian ini bertujuan untuk merancang dan menganalisis desain reaktor tipe batch dalam mengoptimalkan produksi nanopartikel emas dalam skala industri. Metode yang digunakan dalam perancangan reactor ini adalah analisis komputasi terhadap perhitungan reactor, termasuk pengadukan dan neraca massa sebagai perhitungan awal dengan menggunakan aplikasi Microsoft excel secara manual. Hasil perhitungan menunjukkan bahwa spesifikasi reactor yang dirancang ini memiliki volume reaktor 21.7335 ft3, tinggi silinder 13.4612 in, tinggi larutan dalam silinder 8.9046 in, diameter bejana 73.2984 in, tekanan desain 9.9978 psig, panjang impeller 9.1840 in, panjang poros 10.5418 in, dengan daya pengadukan 62.5228 Hp. Analisis desain reaktor ini menjadi tahapan penting dalam perancangan proses produksi dalam skala industri, dimana hasil spesifikasi dari reaktor hasil perancangan tersebut selain dapat digunakan untuk penyesuaian reaktor dengan produk, juga dapat digunakan sebagai acuan dalam biaya produksi. Hasil analisis komputasi dan perhitungan yang dilakukan pada perancangan reaktor dalam studi ini dapat dijadikan acuan dan dapat diterapkan dalam perancangan analisis kinerja reactor sebagai media pembelajaran termasuk mekanisme operasi pada proses produksi.
Utilization of Bamboo Powder in The Production of Non-Asbestos Brake Pads: Computational Bibliometric Literature Review Analysis and Experiments to Support Sustainable Development Goals (SDGs) Asep Bayu Dani Nandiyanto; Aisha Nadhira Syazwany; Karina Nur Syarafah; Themy Sabri Syuhada; Risti Ragadhita; Erna Piantari; Obie Farobie; Muhammad Roil Bilad
Automotive Experiences Vol. 7 No. 1 (2024)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.11109

Abstract

This study aims to develop asbestos-free and environmentally friendly brake pads using apus bamboo powder (Gigantochloa apus). In the experiments, bamboo powder, resin, and catalyst were used as the raw materials and varied to ensure the quality of the prepared brake pads. To analyze the performance of brake pads, the fabricated brake pads are subjected to physicochemical tests (such as microscopic tests and functional group analysis) and mechanical tests (such as puncture tests, compression tests, and friction tests). The research results showed that adjusting the composition of the raw materials allowed a change in the performance of the brake pad, including porosity, morphological structure, and mechanical properties. Indeed, the condition of the low porosity on the inside of the brake pad strategically optimizes the compression strength of the material, making this design ideal for applications that require high resistance to compression loads. This study shows the possibility of apus bamboo powder as an alternative to asbestos in the production of non-asbestos brake pads, offering a safer and environmentally friendly solution as well as giving ideas for supporting current issues in the sustainable development goals (SDGs).
Co-Authors Aisha Nadhira Syazwany Asep Bayu Dani Nandiyanto Azizah Nurdiana Erlangga, Thyta Medina Salsabila Erna Piantari Karina Nur Syarafah Lydzikri Astuti Muhammad Roil Bilad Obie Farobie Rismaya Pramesti Dewi Tedi Kurniawan Teguh Kurniawan Themy Sabri Syuhada