| Autor: |
Yetri, Yuli, Gunawarman, Rakiman, Rivai, Adri Yanti |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2023, Vol. 2691 Issue 1, p1-8, 8p |
| Abstrakt: |
Cacao (Theobroma cacao) peels are one of the agricultural wastes that can be used as corrosion inhibitors because they contain heteroatom groups that can function as electron donors. The purpose of this study was to determine the adsorption power of cacao peels extract in protecting the corrosion rate on the steel surface. The essential compound of Theobroma cacao peels was obtained by maceration and then was analyzed by using GC-MS, LC-MS, and FTIR before fraction. Forty-two compounds were identified among the extract. This essential compound was characterized to have a high content of oxygen which leads to its capability to control corrosion. Corrosion behavior of mild steel in hydrochloric acid solution with the addition of Theobroma cacao was determined by conducting weight loss measurements. Inhibition and adsorption properties of polar extract of Theobroma cacao peels addition on corrosion inhibition efficiency of 0.3%C mild steel in the hydrochloric acid solution for various exposure times. The results show that the inhibition efficiency increases significantly up to 96.3% (by weight loss method). Cacao peels are identified to have functional groups of phenol, aromatic rings, and ether. This compound is then adsorbed by the surface of the mild steel. The surface condition is improved due to the adsorption and then the formation of thin layer film protection on the surface of the steel. It can be concluded that the addition of the extract of theobroma cacao peels is very promising to be used in reducing the corrosion rate of mild steel. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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