OCIMUM BASILICUM VAR. CITRIODORUM EXTRACT: A SUSTENTAINABLE APPROACH FOR ANTICORROSIVE PROTECTION OF STEEL IN ACIDIC MEDIA
DOI:
https://doi.org/10.18624/etech.v17i1.1364Palavras-chave:
lemon basil; corrosion inhibitors; natural products; green inhibitors.Resumo
Although the Brazilian flora has a vast genetic diversity, only a small part has been explored for the identification and application of bioactive compounds. In this sense, natural products have been widely applied in several areas, especially in the area of technology, where they play a crucial role in the development of sustainable solutions. In this context, this research aimed to characterize and evaluate the effectiveness of the hydroethanolic extract of Ocimum basilicum var. citriodorum, known as lemon basil, as a sustainable solution for the inhibition of corrosion of SAE 1010 carbon steel in an acidic medium. For this purpose, techniques such as phytochemical prospecting, gravimetric analysis, open circuit potential test and optical microscopy were used. The results obtained indicated that the best inhibition efficiency was achieved with the addition of 20% of the hydroethanolic extract, at a concentration of 1000 ppm in the corrosive medium, reaching a maximum efficiency of 81.71%. This efficiency is associated with the formation of adsorbed films on the metal surface. Thus, lemon basil presents itself as a potential sustainable alternative for the anticorrosive protection of carbon steel in an acidic environment.
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Copyright (c) 2024 Mauro Patrício da Costa, Diana Ferreira Alves, José Milton Ferreira

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