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primary topic: Analysis of natural okra extracts as corrosion inhibitors for mild steel in acidic medium

Analysis of natural okra extracts as corrosion inhibitors for mild steel in acidic medium
type: AcademicArticle
type: Article
abstract: Plant extracts have been shown to effectively inhibit metal corrosion. Using the Box-Behnken design, gravimetric, and electrochemical techniques, analyses were designed to investigate the anti-corrosion potential of okra in a 1M HCl medium. The inhibition performances derived from the various methods were in good agreement, demonstrating that physio-chemisorption was effective and adhered to the Langmuir isotherm model. The efficiency of okra mucilage extract was 96 at a much lower concentration compared to 91.2 and 88.4 for the unsieved extract and gelly-okra filtrate, respectively. FTIR results showed the presence of several functional groups in the okra mucilage extract that are associated with adsorption, and TGA analysis revealed that the extract has high thermal stability. FESEM analysis also supported evidence of adsorption. It was determined that corrosion inhibition by okra mucilage extract was primarily influenced by temperature, followed by extract concentration, with immersion time having the least effect. From the model optimization, it was observed that okra mucilage extract at 200 ppm, 60°C, and 24 h gave an inhibition efficiency of 89.98 and high desirability. These results demonstrate the high capacity of natural okra as an efficient biodegradable corrosion inhibitor. © 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
date: 2023
volume: 30
issue: 56
is part of: Environmental science and pollution research international
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Environmental science and pollution research international
type: Collection
issn: 16147499

B.N. Tackie-Otoo
type: Person
given name: B.N.
family name: Tackie-Otoo

P.C. Nwankwo
type: Person
given name: P.C.
family name: Nwankwo

M.A. Bustam
type: Person
given name: M.A.
family name: Bustam

A.A. Sulaimon
type: Person
given name: A.A.
family name: Sulaimon

P.I. Murungi
type: Person
given name: P.I.
family name: Murungi

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primary topic: Analysis of natural okra extracts as corrosion inhibitors for mild steel in acidic medium