The effectiveness of Tamarindus Indica extracts as a metal corrosion inhibitor in various circumstances

Abstract

Purpose Plant development and use as green corrosion inhibitors are already recognized as one of the most environmentally friendly and effective protocols. In recent years, efforts have been made to find green corrosion inhibitors as an alternative to synthetic inhibitors for metals in acid medium. This paper aims to report the investigation of use of aqueous extracts of Tamarindus Indica as green inhibitors for corrosion of metals within different circumstances. Design/methodology/approach The use of Tamarindus Indica extracts (leaves, stem, fruit pulp and fruit husk) as corrosion inhibitors for mild steel and aluminum in different mediums (HCl, H2SO4, formic acid and citric acid) at different temperatures was investigated. Findings The inhibitory efficiency of Tamarindus Indica extracts increases with increasing concentration and decreases with increasing temperature. Langmuir is the adsorption isotherm, and the extract (inhibitor) is a mixed-type inhibitor (physisorption and chemisorption). Practical implications Tamarindus extracts (leaves, stem, fruit pulp and fruit husk) are effective inhibitors and can be used to protect metals from corrosion at different circumstances. Originality/value To the best of the authors’ knowledge, this is the first review that discusses the use of Tamarindus Indica extracts as corrosion inhibitors for metals.

Experimental and computational study of imidazole-pyridine and its derivatives as corrosion inhibitors on brass in sulfuric acid solution

“…However, these metals are prone to corrosion in the process of storage or daily operations (Wang et al , 2022), thus affecting their normal use. To minimize loss due to corrosion, researchers have adopted various methods to protect metals (Xia et al , 2020), such as developing new corrosion-resisting alloys (Seo et al , 2023), surface treatment (Ermakova et al , 2023), application coating (Karattu et al , 2023; Pan et al , 2020; Pan et al , 2020) and adding corrosion inhibitors (Li et al , 2022; Gan et al , 2022; Xiong et al , 2022; Luis et al , 2022; Nasser and Masmali, 2022; GK et al , 2022; Wang et al , 2023). Among these, the method of adding corrosion inhibitors has been widely used owing to the advantages of low dosage, simple operation, low cost, significant effect and general effectiveness (Yujie et al , 2019).…”