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Pramudita, Marta
Universitas Sultan Ageng Tirtayasa
Chemical Engineering, Chemistry & Bioengineering

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The Effect of Immersion Time on The Ability of Tannins to Inhibit The Corrosion Rate of Mild Steel In 1M H2SO4 Solution Pramudita, Marta; Sukirno, Sukirno; Nasikin, Mohammad
World Chemical Engineering Journal VOLUME 4 NO. 1 JUNE 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i1.10592

Abstract

Tannin is a polyphenol compound that is widely found in various types of plants. Polyphenol compounds can inhibit the corrosion rate of mild steel. This study aims to determine the effect of immersion time on tannins' ability to inhibit the corrosion rate of mild steel in 1M sulfuric acid. The method used is weight loss with immersion time variations of 2,4 and 6 hours, temperature variations of 313K, 333K, and 353K. The concentration variation used was 0; 250; 500; 750; 1000; 1250 ppm. From the research results, it was found that the immersion time affected tannins' ability to inhibit corrosion in mild steel. The highest efficiency was 71.07% at a concentration of 1250 ppm and 313K. The longer the immersion time, the lower the tannin ability to inhibit corrosion in mild steel.
Synergistic Ability of Tannin – Silica as a Corrosion Inhibitor with the Addition of KI to Mild Steel in Demineralized Water Arief, Hendra; Pramudita, Marta; Pitaloka, Alia Badra
World Chemical Engineering Journal VOLUME 7 NO.1 JUNE 2023
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v7i1.20626

Abstract

The rapid industrial growth in Indonesia today requires effective and efficient operating and maintenance conditions. The application of corrosion protection in cooling towers and boilers shows that inhibitor materials such as nitrates, nitrites and chromates must be used in large concentrations; these inhibitors also cause environmental pollution. For this reason, bio-inhibitors derived from natural ingredients have begun to be developed. Tannins and silica are widely known as effective inhibitors in controlling carbon steel corrosion. The synergistic mechanism of inhibitors is known to increase the effectiveness of inhibitory substances. This study aims to study the effectiveness and understand the mechanism of tannin and silica inhibitors and the effect of adding potassium iodide. as a synergistic inhibitor. This study used samples of mild steel carbon steel with demineralized water media at a temperature variation of 30-60oC and immersion time of 1, 2 and 3 hours. Variations in the concentration of tannins and silica used are 0-1250 ppm, and the corrosion measurement method uses the weight loss method. The results showed that adding potassium iodide. They have increased the ability of mild steel corrosion inhibitors produced by tannin-silica synergy. The corrosion rate of mild steel can be reduced by 82.95% at a concentration of tannin-silica-KI 1250 ppm. Therefore, tannin-silica synergy with the addition of potassium iodide. It has the potential to be a good alternative in the use of corrosion inhibitors for mild steel in demineralized water.
Rice Husk Extract and Damar Resin as Corrosion Preventing Bio Coating Materials for Mild Steel in NaOH Solution Pramudita, Marta; Novita, Lita; Ernawati, Hera; Hidayatullah, Andra; Pitaloka, A.B.
World Chemical Engineering Journal VOLUME 6 NO. 1 JUNE 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v6i1.15713

Abstract

Corrosion is damage due to chemical reactions between metals or metal alloys with their environment. The use of coatings can reduce the rate of corrosion, but it is constrained by stability for a long time, so it is necessary to try other protections against mild steel that can cover the metal with a coating material. This research focuses on mild steel's bio coating expertise using 1M NaOH corrosive media using natural ingredients of rice husk extract and dammar resin. Rice husk and resin are plants that can be used as bio coating materials. Rice husk extract contains several compounds that can be used to inhibit the corrosion rate, one of which is silica. In contrast, dammar resin is a natural polymer with flexible and stable properties that can prevent corrosion. This study aimed to determine the effect of the components of the bio coating material (rice husk extract and dammar resin) on the ability to protect mild steel from 1M NaOH corrosive media by calculating the corrosion rate and efficiency of the bio coating material. There are five stages in the research: the sample preparation stage, the stage of making latex solutions, the stage of making bio coating products, the stage of metal coating with bio coating materials, and the inhibition efficiency testing phase. The method used is the weight loss method to determine the rate of corrosion formed. This study obtained the highest inhibition efficiency (IE%) of 83.23% at a bio coating concentration of 1500 ppm, with a temperature of 40˚C, and an immersion time of 1 hour.
Effect of Temperature on Damar Resin-Based Bio-Coating on Mild Steel in Corrosive Media (Acid Effect) by Using Silica from Rice Husk Extract Luqmanulhakim, M. Naufal; Sulaiman, Fatah; Pramudita, Marta
World Chemical Engineering Journal VOLUME 7 NO.1 JUNE 2023
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v7i1.20628

Abstract

Bio-coating is a natural anti-corrosion coating material that can be easily degraded and renewed. Rice husk extract and damar resin are alternative natural materials believed to have a relatively high silica content, so they can be used as a substitute for synthetic chemicals in protecting metals from corrosion. This research aims to determine the heat resistance ability of bio-coating on mild steel in a 1 M H2SO4 acid corrosive medium. The experimental object used rice husk waste and damar resin as raw materials. The analytical method used is the weight loss method. Damar resin and silica sol, obtained from rice husks' ashing, are mixed to form a homogeneous product. Metal samples coated with bio-coating material were immersed in 1 M sulfuric acid solution, with silica concentrations of 1500 ppm, variation times 1, 3, and 5 hours, and at temperatures of 30, 40, 60, and 80 °C. At 80 °C, the corrosion rate is very high, which proves that the temperature significantly affects the corrosion rate of mild steel immersed in an acid solution. The results showed that the best conditions were four hours of immersion time temperature of 40°C, with an inhibition efficiency of 98%
Co-Authors Arief, Hendra Ernawati, Hera Hidayatullah, Andra Luqmanulhakim, M. Naufal Mohammad Nasikin Novita, Lita Pitaloka, A.B. Pitaloka, Alia Badra Sukirno Sukirno Sulaiman, Fatah