Corrosion mitigation of peanut shell extract as a novel effective corrosion inhibitor for carbon steel in sulfuric acid medium

Abstract

The extract of peanut shell extract (PSE) is firstly utilized as a novel eco-friendly corrosion inhibitor for the mitigation of corrosion on carbon steel in 0.5 M sulfuric acid medium. The corrosion inhibition performance and adsorption properties of PSE were researched via weight loss, electrochemical measurements and surface characterization analysis. It is demonstrated that the PSE acts as a mixed type inhibitor with a superb inhibition ability of 95 % with the addition of 300 mg/L PSE. The adsorption of the active ingredients in PSE on steel surface contributes to effective corrosion inhibition. The outstanding inhibition efficiency and straightforward extraction method with environment-friendly solvent convincingly demonstrate that the PSE possesses promising application prospects to be a novel eco-friendly corrosion inhibitor in industrial corrosion mitigation.