Article Per Year (5 Year)
p-Index From 2021 - 2026
3.731
P-Index
This Author published in this journals
All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Sains Materi Indonesia Agrointek Teknika: Jurnal Sains dan Teknologi ROTOR: JURNAL ILMIAH TEKNIK MESIN Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Journal Of Chemical Process Engineering (JCPE) INVOTEK: Jurnal Inovasi Vokasional dan Teknologi Jurnal Rekayasa Material, Manufaktur & Energi Metalurgi Teknomekanik Journal of Materials Exploration and Findings Metalurgi Recent in Engineering Science and Technology Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
Johny Wahyuadi Soedarsono
Departemen Teknik Metalurgi Dan Material, Fakultas Teknik, Universitas Indonesia, Depok 16424
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

Published : 32 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 32 Documents
Search

 1   2   3   4 
Catalytic Graphitization of Biomass as a Potential Method Produce Graphite In The Future : A Review Nuriskasari, Isnanda; Zulfia Syahrial, Anne; Wahyuadi M Soedarsono, Johny
Recent in Engineering Science and Technology Vol. 1 No. 02 (2023): RiESTech Volume 01 No. 02 Years 2023
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v1i02.17

Abstract

The traditional graphitization process involves the use of non-renewable carbon sources and high temperatures, which are time-consuming and expensive. Biomass has been proposed as an alternative renewable source of carbon, which can be graphitized at lower temperatures using transition metal catalysts. The article highlights successful research on graphitization of various biomass carbon sources, such as coconut coir, whey protein, pine wood sawdust, mangosteen peel, miscanthus grass, and palm kernel shell waste, using metals as a catalyst. The graphitization process using catalysts derived from transition metals has been shown to reduce the graphitization temperature, shorten the graphitization time and improve the physicochemical properties of the resulting graphite material.
Effect of Slope Chute Angle of HAP Magnetic Separator to the Acquisition of Nickel Matte from Undersized Product Resulted by Pierce Smith Converter Machine Indah Ciptasari, Nurhayati; Arya Parande, Egidius; Wahyuadi Soedarsono, Johny; Budi Prasetyo, Agus; Mayangsari, Wahyu; Miftahul Ulum, Reza; Maksum, Ahmad
Recent in Engineering Science and Technology Vol. 1 No. 03 (2023): RiESTech Volume 01 No. 03 Years 2023
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v1i03.18

Abstract

The prototype of a magnetic separator was initiated and manufactured for handling undersized products of Pierce Smith Converter which has been channeled to a temporary shelter called a matte pond. It was dredged three to four times a year and it’s costly. This expenditure can be minimized by the manufacture of magnetic separators that are used to attract undersized nickel products. The manufacture of this prototype uses a scale of 1:20.000 for the volume of water and nickel matte, while for chute and magnetic drums with a scale of 1:4 from the conditions in the field. This research aims to determine whether magnetic separators are relevant for installation in the nickel processing industry, with the slope angle of the chute and magnetic power as the main parameters. Thus the matte pond can be minimized and undersized products can be directly processed and distributed to consumers. The material used in the manufacture of this prototype is aluminum sheet 1/16 which is rolled for magnetic drums, aluminum sheet 1/8 in for chute, copper wire 0.5 mm and mild steel, lathe for rods and axis, and bending for magnetic holders. The result of this magnetic separator prototype is 24.48% nickel can be attracted.
Kajian Kombinasi Ekstrak Daun Physalis angulata dan Daun Cassia angustifolia dengan Rasio 50:50 sebagai Green Inhibitor untuk API 5L dalam Larutan HCl 1M: Kajian Green Inhibitor tipe campuran untuk API 5L dalam Larutan HCl Ni Luh, Triska Adelia; Pramono, Khalisha Rizqi Olga; Soedarsono, Johny Wahyuadi; Solihin, M. Yudi M.
Recent in Engineering Science and Technology Vol. 2 No. 03 (2024): RiESTech Volume 02 No. 03 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i03.66

Abstract

The effect of combination of Physalis angulata leaf and Cassia angustifolia leaf extract as green inhibitor with a 50:50 ratio for API 5L steel was investigated. This experiment was carried in 1M HCl solution by using different concentrations as variables which is 10 ml, 30 ml, and 50 ml inhibitor extracts. Evaluation of this experiment was performed using potentiodynamic polarization and EIS. The antioxidant compound was investigated using FTIR and was found to be flavonoid. It was found that the capability of the inhibitor to inhibit the steel surface from the environment increases with increasing concentration, which 50 ml concentration is found to have the best efficiency of all concentrations. Combination of Physalis angulata leaf and Cassia angustifolia leaf extract is identified as mixed-type inhibitor with predominant cathodic effectiveness. The adsorption of this inhibitor on the steel surface was predominantly through physisorption and obeyed Langmuir adsorption isotherm.
Effects of Red Rosela Tea (Hibiscus sabdariffa) as An Organic Inhibitor for Low Carbon Steel in An Environment of Sodium Chloride 3,5% Rahmaulita, Giafin Bibsy; Soedarsono, Johny Wahyuadi Mudaryoto
Recent in Engineering Science and Technology Vol. 3 No. 04 (2025): RiESTech Volume 03 No. 04 Years 2025
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v3i04.119

Abstract

Corrosion is an unavoidable phenomenon that is commonly observed in everyday life, particularly in infrastructure and tools constructed from low carbon steel. The corrosion of low carbon steel in chloride-rich environments presents a critical issue across numerous industrial sectors. One widely adopted method for mitigating corrosion involves the application of corrosion inhibitors, chemical substances that even in small concentrations, can significantly suppress the rate of metal degradation in corrosive environments. This research examines the potential of red roselle extract (Hibiscus sabdariffa) as a green corrosion inhibitor for low carbon steel in a 3.5% sodium chloride solution. The corrosion inhibition performance will be evaluated based on weight loss measurements over varying exposure periods of 3, 6, 9, and 12 days. Red roselle tea concentration of 10 g/L will be utilized, supplemented with an additional 2 mL of liquid inhibitor. The results of this study indicate that the maximum corrosion inhibition efficiency reaches 16% after 9 days of immersion, while the lowest efficiency is observed at 8% after 3 days. pH measurements and corrosion potential analysis suggest that red roselle tea contributes to reducing the corrosion rate by forming a protective layer on the surface of low carbon steel.
Study of the Effect of Volume of Moringa Leaves and Purple Sweet Potato Extracts as a Green Corrosion Inhibitor on the Corrosion of API 5L Steel Metals in 0.2 M HCl Environments Kezia; Pratesa, Yudha; Pertama, Tio Angger; Soedarsono, Johny Wahyuadi
Recent in Engineering Science and Technology Vol. 3 No. 04 (2025): RiESTech Volume 03 No. 04 Years 2025
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v3i04.120

Abstract

This study aimed to investigate the corrosion inhibition mechanism of moringa leaves extract (Moringa oleifera) and purple sweet potato extract (Ipomoea batatas) extract as environmentally friendly inhibitors for low carbon API 5L steel in a 0.2 M HCl solution. Potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) tests were conducted with varying concentrations and combinations of the two inhibitors to evaluate their corrosion inhibition performance. The results indicated that both inhibitors individually function effectively as green corrosion inhibitors. However, their combination did not offer adequate protection for API 5L steel in a 0.2 M HCl environment. FTIR analysis of the inhibitors confirmed the presence of flavonoid compounds in both extracts. Potentiodynamic polarization tests showed that increasing the concentration of moringa leaves extract resulted in a decrease in the corrosion rate and an increase in %IE, with the highest efficiency reaching 73.08%. Similarly, an increase in the volume of purple sweet potato extract also resulted in a reduced corrosion rate, with a maximum inhibition efficiency of 65.31%. However, the combination of both inhibitors led to an increase in the corrosion rate. The results of the EIS test demonstrated that both inhibitors protect the metal by forming a protective film layer on its surface. The adsorption behavior of the inhibitors corresponds to a physical adsorption process and aligns with the Langmuir adsorption isotherm model.
A Study of Potato Peel Extract (Solanum Tuberosum L) as a Green Corrosion Inhibitor on Low Carbon Steel in a 3.5% NaCl Environment Nugroho, Firman A.; Soedarsono, Johny Wahyuadi
invotek Vol 23 No 3 (2023): INVOTEK: Jurnal Inovasi Vokasional dan Teknologi
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/invotek.v23i3.1159

Abstract

Wide application in the oil and gas industry made carbon steel suffer annual losses due to corrosion. The corrosion protection utilizes inhibitor have drawbacks expensive and harmful to the environment. Potato peel extract (solanum tuberosum L) and its main constituents, such as flavonoids, alkaloids, and tannins, have been investigated as a green corrosion inhibitor for low-carbon steel in a 3.5% NaCl solution. The inhibitor’s effectiveness and corrosion rate monitoring were measured using weight loss. Potentiodynamic polarization was used to investigate the type of corrosion inhibition and adsorption of plant extract on the surface. Fourier transform infrared spectroscopy (FTIR) was utilized to observe the presence of functional groups, natural compounds, and the type of bonding for adsorbed organic inhibitors on the surface. The results of the Tafel polarization analysis indicated that the potato peel extract acts as a mixed-type inhibitor. The inhibition efficiency increased with the concentration of the inhibitor extract. The optimal inhibition efficiency of 73.33% is was achieved with 6 ml of potato peel extract and 216 hours of immersion time. The inhibitive effect is due to the adsorption of inhibitor molecules on the steel surface, following the Langmuir adsorption isotherm.
The Risk Identification On 3" GL BO3-52520 Process Pipelines Using a Risk-Based Inspection Method Putra, Angga Pratama; Soedarsono, Johny Wahyuadi; Pangesty, Azizah Intan; Yusran asfar, Muhammad Ibkar; Aprizal, Aprizal; Ramadhan, Romal
Teknomekanik Vol. 5 No. 1 (2022): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.874 KB) | DOI: 10.24036/teknomekanik.v5i1.12772

Abstract

The oil and gas industry can contribute significantly to sustainable development by mitigating negative environmental impacts, such as equipment failure. Numerous pipeline failures have occurred due to the dramatic expansion of the oil and gas product distribution pipeline network, which is a significant factor in the offshore gas pipeline network's failure. In general, compared to other equipment types in the industry, planning inspections presents more challenges. Due to a lack of jurisdictional requirements regarding inspection intervals and piping methods. This research aims to ensure the reliability by conducting a risk assessment of the likelihood and consequences of equipment failure, mitigating the impact of that risk, and developing a more optimal inspection plan. This study is focused on API Class 5L Pipe 3" GL BO3-52520. The Routine Inspection Technique (RBI) was implemented in 2016 following the API 581 standard. This semi-quantitative approach is built based on operational data and validated inspection results. According to the risk assessment, the pipeline will have a Medium risk level, with metal losses occurring in each segment. Four years after the risk-based inspection assessment, the recommended inspection plan for gas pipelines is four years.
Study of mixing purple sweet potato and turmeric extract as green corrosion inhibitor for API-5L in NaCl 3.5% environment Wijaya, Arie; Soedarsono, Johny Wahyuadi; Laksana, Aldi Putra
Jurnal Pendidikan Teknologi Kejuruan Vol 4 No 4 (2021): Regular Issue
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jptk.v4i4.21823

Abstract

Green inhibitors have become a major option for corrosion prevention since people are more aware of environmental damage. It is true that chemical inhibitors are more powerful at preventing corrosion, but its side effects are very harmful to the environment. Purple sweet potato (Ipomoea batatas L) in single use has been proven as an active inhibitor for certain applications. To improve this property, purple sweet potato is used as a mixed with other plants that contain antioxidant agents, such as ginger, melinjo, turmeric, jeera, etc. This paper discussed the effect of applying mixed extract of purple sweet potato with turmeric (Curcuma longa) as a green inhibitor to corrosion rate of API 5L steel in a 3.5% NaCl environment. Turmeric extract contains curcumin and kaempferol antioxidants while purple sweet potato extract contains antocyanin antioxidants. Corrosion rates were analyzed based on weight loss and polarization methods. The results showed the highest inhibitor efficiency was 82.54% achieved by 16 ml of turmeric mixed with 2 ml of purple sweet potato, and the optimum inhibitor efficiency was 74.2% achieved by 8 ml of turmeric mixed with 6 ml of purple sweet potato.
Studi Pendahuluan Pengendapan Cerium, Lanthanum, dan Neodymium dari Larutan Klorida Menggunakan Sodium Karbonat pada Pengolahan Monasit Bangka Trinopiawan, Kurnia; Avifa, Venny Nur; Susilo, Yarianto Sugeng Budi; Rakhma, Ersina; Supriyatna, Yayat Iman; Susanto, Iwan; Permana, Sulaksana; Soedarsono, Johny Wahyuadi
EKSPLORIUM Vol. 41 No. 1 (2020): MEI 2020
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2020.41.1.5871

Abstract

Monazite mineral as associated mineral of tin mining in Bangka Belitung Islands contains light rare earth elements like Cerium (Ce), Lanthanum (La), and Neodymium (Nd). The objective of this study is to obtain the concentrates of rare earth carbonate through the precipitation process with sodium carbonate (Na2CO3) and determine the effect of concentration and volume of Na2CO3 on the precipitation recovery of Ce, La, and Nd. The preparation of the feed solution was carried out by following the monazite processing route using the alkali method includes the stages of decomposition, dissolution, and precipitation of radioactive elements. The highest precipitation recovery for Ce, La, and Nd are 10.84%, 7.81%, and 2.68% respectively in the use of Na2CO3 with a concentration of 30% wt and a volume of 55 mL.
Inspection Planning of Subsea Pipeline Using Risk-Based Inspection Adelia, Ni Luh Triska; Munir, Badrul; Soedarsono, Johny Wahyuadi
Journal of Materials Exploration and Findings Vol. 3, No. 2
Publisher : UI Scholars Hub

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

Abstract

Pipelines are an important tool in oil and gas exploration. Pipeline is a transmission and liquid collection lines, including their accessories, which transport fluids from one plant to another. In transmission and collection process, there is a possibility of failure which can have minor to major impact on personnel injury, the environment and interrupt the business process. To maintain safety and to prevent accidents, the source and cause of failure needs to be calculated. Risk-based inspection (RBI) is a method that can be used to calculate the risk and determine the inspection planning both schedule and method, by combining the probability and consequences of failure. The analysis shows that the production separator is in the low-risk category. The next inspection schedule is determined based on RBI estimation which is 13 years after the last inspection. Inspection methods that can be applied to subsea pipeline based on DNVGL-RP-F116 standard are external inspection, in-line inspection with intelligent pig, and monitoring system. For external inspection can use Remotely Operated Vehicle (ROV). In-line inspection (ILI) with intelligent pig need to validate by with underwater UT B-Scan in the following year. The monitoring system only needs to be continued from what has been installed, corrosion coupon. It only needs to be adjusted for the length of installation time according to its purpose, to measure corrosion rate or detect pitting.
Co-Authors Adelia, Ni Luh Triska Adipurnama, Iman Aditiyawarman, Taufik Agus Budi Prasetyo Agus Budi Prasetyo Ahmad Maksum Andon Insani Angga Pratama Putra, Angga Pratama Anjar Oktikawati Anne Zulfia Aprizal Aprizal Arif Arif Arif, Chandra Ariyani, Ira Ariyo Suharyanto Arya Parande, Egidius Asfar, Mhd. Ibkar Yusran Astini, Vita Avifa, Venny Nur Azizah Intan Pangesty Badrul Munir, Badrul Bambang Suharno Budi Prasetyo, Agus Darnengsih, Darnengsih Debby Rachel Eddy S Siradj Eni Febriana Eriyatno . Ersina Rakhma Fachry Abda El Rahman Florentinus Firdiyono Hadi Suwarno Haekal, Teuku Ahmad Haidir, Yuki Hasriyanti Hasriyanti Hendrastuti Hendrastuti Hernowo, Widi Indah Ciptasari, Nurhayati Isnanda Nuriskasari Iwan Susanto Januar Irawan Kautsar Muwahhid Kautsar Muwahhid Kezia Kurnia Trinopiawan Kurnia Trinopiawan Laksana, Aldi Putra Lalasari, Latifa Hanum Latifa Hanum Lalasari Latifa Hanum Lalasari Mahendra, Mirza Meika Syahbana Rusli Meirawati, Selvia Mhd. Ibkar Yusran Asfar Miftahul Ulum, Reza Miftakhur Rohmah Miftakhur Rohmah, Miftakhur Munira Munira Mustafiah Mustafiah Nadia Chrisayu Natasha Natasha, Nadia Chrisayu Nengsih, Sulistia Ni Luh, Triska Adelia Nugraha, Cahyo Ady Nugroho, Firman A. Padmodwiputra, Rendhatya Permana, Sulaksana Pertama, Tio Angger Pramono, Khalisha Rizqi Olga Purnawarman, Faisal Dwiyana Putra, Budhi Putra, Ivan Fitrian Rafdi Abdul Majid Rafdi Abdul Majid Rahmaulita, Giafin Bibsy Rakhma, Ersina Ramadhan, Romal Riady, Rado Rianti Dewi Sulamet-Ariobimo, Rianti Dewi Rini Riastuti, Rini Rudi Subagja Satria, Bambang Eka Sholihin, Muhammad Yudi Masduky Soelistiyono, Dony Solihin, M. Yudi M. Suarthana, Eka Juni Sukirna, Iwan Sulaksana Permana Sulaksana Permana Sulaksana Permana Supriyatna, Yayat Iman Tri Partuti Venny Nur Avifa Vika Rizkia Wahyu Kartika Wahyu Kartika Wahyu Mayangsari Wahyu Mayangsari Widianto, Shilla Rizqi Wijaya, Arie Wisnu Ari Adi Yarianto Sugeng Budi Susilo Yarianto Sugeng Budi Susilo, Yarianto Sugeng Budi Yayat Iman Supriyatna Yudha Pratesa Yusran asfar, Muhammad Ibkar Zulfia Syahrial, Anne