Inhibition of corrosion of mild steel by an alcoholic extract of a seaweed Sargassum muticum

An alcoholic extract of a sea weed Sargassum muticum has been used to control corrosion of mild steel in 0.5 N HCl. Weight loss method and Electrochemical studies have been used in this study. Weight loss study reveals that 500 ppm of the inhibitor offers 99.25 % inhibition efficiency. Polarization study reveals that the inhibitor functions as an anodic inhibitor at higher concentration. The AC impedance spectra confirm the formation of a protective film on the metal surface. Adsorption of inhibitor molecules on the metal surface follows Langmuir adsorption isotherm.

[1]  R. Suleiman,et al.  Comparative studies on the corrosion inhibition efficacy of ethanolic extracts of date palm leaves and seeds on carbon steel corrosion in 15% HCl solution , 2018 .

[2]  M. M. Osman,et al.  Performance of Centaurea cyanus aqueous extract towards corrosion mitigation of carbon steel in saline formation water , 2018 .

[3]  Shuliang Wang.  Inhibition Effect of Tangerine Peel Extract on J55 Steel in CO2- saturated 3.5 wt. % NaCl Solution , 2017 .

[4]  E. D’Elia,et al.  A study of the gorse aqueous extract as a green corrosion inhibitor for mild steel in HCl aqueous solution , 2017 .

[5]  A. Rajasekar,et al.  Neem extract as a green inhibitor for microbiologically influenced corrosion of carbon steel API 5LX in a hypersaline environments , 2017 .

[6]  O. Kanoun,et al.  Natural products as a source of environmentally friendly corrosion inhibitors of mild steel in dilute sulphuric acid: Experimental and computational studies , 2017, Protection of Metals and Physical Chemistry of Surfaces.

[7]  M. Aziz,et al.  Optimization of corrosion inhibition of essential oils of Alpinia galanga on mild steel using Response Surface Methodology , 2017 .

[8]  A. E. Hosary,et al.  Novel corrosion inhibitors for acidizing oil wells , 2017 .

[9]  S. Jakovljević,et al.  Carbon dioxide corrosion of carbon steel and corrosion inhibition by natural olive leaf extract , 2017 .

[10]  T. S. Muthumegala,et al.  Inhibition effect of self assembled films formed by adipic acid molecules on carbon steel surface , 2011 .

[11]  T. S. Muthumegala,et al.  Corrosion resistance of SS 316L in simulated concrete pore solution in presence of trisodium citrate , 2011 .

[12]  H. B. Sherine,et al.  Investigation of the inhibiting effect of nano film by sodium meta silicate-Zn 2 + system on the corrosion of carbon steel in neutral chloride solution , 2010 .

[13]  R. Touir,et al.  Synergistic influence of molybdate ions on the inhibition of corrosion and scale of ordinary steel in cooling water system by new organic compound , 2010 .

[14]  K. Shalabi,et al.  Inhibition of aluminum corrosion in hydrochloric acid media by three schiff base compounds , 2010 .

[15]  S. Rajendran,et al.  Inhibition and biocide actions of sodium dodecyl sulfate-Zn2+ system for the corrosion of carbon steel in chloride solution , 2010 .