Thermodynamic and Adsorption Properties of Flavonoid Rutin from Cassava (Manihot esculenta) Leaves as a Corrosion Inhibitor on the Mild Steel in Sulfuric Acid Solution

Gusti, Diah Riski and Emriadi, Emriadi and Efdi, Mai (2022) Thermodynamic and Adsorption Properties of Flavonoid Rutin from Cassava (Manihot esculenta) Leaves as a Corrosion Inhibitor on the Mild Steel in Sulfuric Acid Solution. Defect and Diffusion Forum, 416. pp. 183-190. ISSN 1662-9507

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Abstract

Abstract. Rutin flavonoid compounds have been isolated from cassava leaves and tested for their corrosion resistance against mild steel. Inhibition efficiency and adsorption properties were studied using the weight loss method at temperature variations of 303, 313, 323, and 333 K and concentration variations of 0.1, 0.5, 1.0, 5.0, and 10 g/L. As the concentration of rutin of cassava leaves (RCL) got greater, the lower the corrosion rate and the greater corrosion inhibition efficiency. The thermodynamic parameters have been calculated, and the result is that the adsorption corrosion mechanism by physisorption occurs spontaneously with increasing temperature. RCL adsorption process on the mild steel surface by releasing energy or exothermic and standard adsorption entropy shows the degree of irregularity.

Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Fakultas Sains dan Teknologi > Kimia
Depositing User: Gusti
Date Deposited: 04 May 2023 03:43
Last Modified: 04 May 2023 03:43
URI: https://repository.unja.ac.id/id/eprint/47700

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