Corrosion inhibition potential of the methanolic crude extract of Mimosa pudica leaves for mild steel in 1 M hydrochloric acid solution by weight loss method

Autor:	Eric Oluwafisayo Akintemi, Elijah Anamnteowo Uduak, Eric Bamidele Agbaffa, Oluwatoba Emmanuel Oyeneyin
Rok vydání:	2021
Předmět:	chemistry.chemical_compound biology Chemistry Weight loss Mimosa pudica medicine Hydrochloric acid medicine.symptom biology.organism_classification Nuclear chemistry Corrosion
Zdroj:	Science Letters. 15:23
ISSN:	2682-8626 1675-7785
DOI:	10.24191/sl.v15i1.11791
Popis:	The corrosion inhibitory activity of mild steel in 1M hydrochloric acid solution by Mimosa pudica leaves extract was examined by the weight loss method. The result reveals that the leaves extract performs well as a good eco-inhibitor of the corrosive action of HCl on mild steel. Inhibition efficiency obtained for the extract rises with higher concentration and exposure time but falls with increasing temperature. The mechanism of the adsorption mode of the extract’s molecules fits well with Langmuir adsorption isotherm which suggests that the phytochemical constituents, (tannins, saponins, flavonoids, alkaloids, phenols, and quinones) as qualitatively displayed by the preliminary screening, adsorb onto the metal surface by forming monolayer films. Kinetics study shows that the rate of metal corrosion in the acidic medium is a first-order reaction that is concentration-dependent. Keywords: Mimosa pudica, corrosion inhibition, crude extract, weight loss
Databáze:	OpenAIRE
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