Potential of Tomato Pomace Extract as a Multifunction Inhibitor Corrosion of Mild Steel

The aim of this paper is to investigate tomato pomace extract (TPE) as a multifunctional “green” vapor phase corrosion inhibitor for prevention from the atmospheric mild steel and in neutral media 0.5 M NaCl solution. TPE would be an effective with efficiency around 98% both corrosive conditions. chemical profile was analyzed using gas chromatography mass spectrometry (GC–MS) high-performance liquid analysis (HPLC-DAD-MS). major volatile constituents identified were alcohols (12.5%), fatty acids (23.78%), aldehydes (41.6%), ketones (8.65%), terpenoids (9.11%). predominant semi-volatile high molecular weight components phenolic flavanols [caffeic acid (2.03 ± 0.3 μg/g), chlorogenic (37.23 0.80 gallic (10.2 μg/g)]. protection properties studied accelerated tests (weight loss method) electrochemical methods [polarization curves linear polarization technique (LPR)]. mechanism inhibition by formulations help scanning electron microscopy (SEM) atomic force (AFM) observations. acts "pro-inhibitor" confirmed that growth inhibitory prolonged rate reduced after 40–48 h exposure. increases increasing exposure time reaches 48 h. Quantum-chemical calculations used predict adsorption/inhibition some main compounds formed result conversion. This work contributes interpretation/explanation understanding action green inhibitors