Studi Laboratorium Pengaruh Konsentrasi Dan Immersion Time Terhadap Kinerja Organic Corrosion Inhibitor Dari Daun Bawang Tiwai

Makessa, Yatya (2022) Studi Laboratorium Pengaruh Konsentrasi Dan Immersion Time Terhadap Kinerja Organic Corrosion Inhibitor Dari Daun Bawang Tiwai. Other thesis, Universitas Islam Riau.

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Abstract

Corrosion can occur when a substance interacts with a corrosive environment. Corrosion failure can have major ramifications, including as workplace accidents and environmental damage. Oil and gas pipelines are among the most often corroded things. Corrosion cannot be removed, but it may be regulated. Many components of N, O, P, S are present in antioxidants such as polyphenols, tannins, alkaloids, and saponins, which can form insoluble complex compounds with metal ions to hinder metal corrosion. Tiwai leek extract was utilized in this study because, in addition to being very inexpensive and simple to get, it also includes antioxidant chemicals, one of which being tannins, which can help slow down the oxidation reaction. The spectrophotometry test revealed that the tiwai leek extract contains 4.85% tannin. Based on the weight loss test findings, the lowest corrosion rate was obtained at a concentration of 15 ml tiwai leek extract with a soaking duration of 96 hours and an inhibitory efficiency of 90.57% in a 3.5% NaCl environment. However, the inhibitor efficiency value decreased after 144 hours of immersion with the same dose of tiwai leek inhibitor; these findings suggest that the optimal time for tiwai leek extract in suppressing corrosion rate is 96 hours of immersion.

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