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Johny Wahyuadi Soedarsono
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Chemical Engineering, Chemistry & Bioengineering Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pemanfaatan Campuran Myrmecodia Pendans dan Piper Crocatum Sebagai Green Corrosion Inhibitor pada Inhibitor Kimia Jenis Koktail untuk Proteksi Korosi Baja API 5L Grade B dalam Larutan NaCl 3,5% Rani Kusumawardani; Agus Budiono; Johny Wahyuadi Soedarsono; Yudha Pratesa
Recent in Engineering Science and Technology Vol. 3 No. 03 (2025): RiESTech Volume 03 No. 03 Years 2025
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v3i3.112

Abstract

Method to prevent the corrosion during pipeline hydrotest using seawater is generally by the addition of inorganic inhibitor containing corrosion inhibitor agent, oxygen scavenger and biocide, so that require to find out the alternative eco-friendly materials with better performance. The main objective of this study is to investigate the efficiency of the use of mixture of extract of Myrmecodia pendans and Piper crocatum as an alternative of eco-friendly inhibitor for reducing the use of inorganic inhibitors for corrosion protection of steel material API 5L Grade B in 3.5% NaCl. The corrosion inhibition ability of natural ingredient extraction are investigated by using tafel polarization test and EIS and verified by weight loss test. The content of the active compounds in natural ingredient extraction along with adsorption compound on metal surfaces and inhibition mechanism are investigated by EIS, FTIR and adsorption isotherm model. In the mixed green inhibitor concentration of 2 ml Myrmecodia pendans and 1 ml Piper crocatum is resulted in approximately 73.66% inhibitor efficiency while concentration of 1 ml chemical cocktail and 2 ml green inhibitor are significantly reduce the corrosion rate from 0.42 mm/year to be 0.03 mm/year with approximately 93.15% inhibitor efficiency. The green inhibitor affected the cathodic as well as the anodic polarization curves which were known as mixed corrosion inhibitor type. The adsorption of compounds contained in the Myrmecodia pendans and Piper crocatum on a metal surface are occur spontaneously follows the Langmuir adsorption isotherm.
Bahasa Inggris Hendrik Nemers; Sulamet-Ariobimo, Rianti Dewi; Johny Wahyuadi Soedarsono; Muh. Fajar Ramadhan.; Agus Paul Setiawan Kaban; Ahmad Maksum; Theo Thomas; Djoko Nirprawitno
Recent in Engineering Science and Technology Vol. 3 No. 03 (2025): RiESTech Volume 03 No. 03 Years 2025
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v3i3.98

Abstract

Carbon is an essential element in the iron reduction process. Cokes are used as a carbon source in the traditional reduction process in the beneficiary of iron. When the Ironmaking Technology Mark 3 (ITMk3) method is applied in the reduction process, many carbon sources are used, especially the sources with sustainable and eco-friendly such as coconut shells, palm kernel shells, rice husk, and sugar cane bagasse. Saccharum officinarum or sugarcane extraction produced bagasse as the by-product. Like coconut shells, this rich carbon by-product is not utilized. This work discussed the utilization of bagasse as a reducing agent in the iron reduction process. An analysis is made based on specific reduction temperature with the various ratio of iron to coal. The lump ore is originated from South Borneo. Unlike the coconut shell, in this work, the Baggasse was dried. The process temperature range between 700 and 1000OC. The ratios of ore to bagasse were 1 to 1, 1 to 2, 1 to 3, and 1 to 4. The reduction process was carried out in a muffle furnace. The result shows that the reduction process produced wustite (FeO). This work also compared sugarcane bagasse with other green reducing agents.
Co-Authors AGUS BUDIONO Agus Paul Setiawan Kaban Ahmad Maksum Djoko Nirprawitno Hendrik Nemers Muh. Fajar Ramadhan. Rani Kusumawardani Rianti Dewi Sulamet-Ariobimo, Rianti Dewi Theo Thomas Yudha Pratesa