From trash to treasure: Cattle manure as a potent green corrosion inhibitor

Abstract

The novelty of this study attributes establishing cattle manure as a potent and sustainable green corrosion inhibitor and identifying organic compounds accountable for the same. A simple and convenient maceration method was used for the extraction of a novel, eco-friendly, low-cost, efficient, and water-soluble green corrosion inhibitor from cattle manure. The inhibitor has been characterized through different spectroscopic, spectrometric, and chemical confirmatory tests. The efficacy of the cow manure extract (CME) in mitigating chloride-induced corrosion on mild steel was evaluated through electrochemical impedance and polarization studies at ambient conditions. Electrochemical corrosion monitoring revealed the sustainability of CME as a highly efficient inhibitor from a low-cost agricultural biowaste. Post-corrosion characterizations demonstrated the substantial film-forming characteristics of the CME. Mass spectrometry of the corrosion products assisted in identifying the phytochemicals contributing significantly to the film formation. This study defines an ecological route for agricultural solid waste management.