Inhibitory action of rice husk extract (RHE) on the corrosion of carbon steel in acidic media

Olawale, O and Adediran, A and Oyinbo, T and Kalawole, O (2017) Inhibitory action of rice husk extract (RHE) on the corrosion of carbon steel in acidic media. Aceh International Journal of Science and Technology, 6 (2). pp. 44-51. ISSN 20889860

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The study investigates the inhibition characteristics of rice husk extract (RHE) on the corrosion of mild steel in 1M acidic media. Mass loss, Fourier Transform Infrared Spectroscopy (FTIR), phytochemical analysis were used as basis for studying the corrosion inhibition behaviour of the extracts. The analyses of the results showed that as concentration increases, there was increase in the inhibitor while increase in temperature reduces the inhibition respectively. Moreover, the highest inhibition efficiency was 94.24 % at 40 oC and 0.25 g/l inhibition concentration in sulfuric acid medium while inhibition efficiency of 89 % at 60 oC and 0.20 g/l inhibition concentration in hydrochloric acid. The thermodynamic parameters revealed that the adsorption of extract onto the metal surface was spontaneous. Langmuir isotherm best fits the data obtained suggesting physical adsorption as the adsorption mechanism between the extract and the mild steel substrate. The results from the FT-IR spectroscopy showed that the organic compounds found in Rice husk made it a good inhibitor.

Item Type: Article
Subjects: T Technology > TP Chemical technology
Depositing User: Unnamed user with email
Date Deposited: 26 Jun 2021 15:52
Last Modified: 26 Jun 2021 15:52

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