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Photochemical screening and corrosion inhibition of Poupartia birrea back extracts as a potential green inhibitor for mild steel in 0.5 M H2SO4 medium

100%
Louis H., Japari J., Sadia A., Philip M., Bamanga A.
World News of Natural Sciences
|
2017
|
vol. 10
95-100
EN
Corrosion of metals is a serious environmental problem and has been given much attention in the oil and gas industries. In several industrial processes (acid cleaning and etching, removal of rust and scale), metal surfaces are often made to come in contact with acids. In the present study, an attempt was made to examine Poupartia birrea (P. birres) back extract as a potential green corrosion inhibitor for mild steel in a 0.5 M H2SO4 medium, using the weight loss determination method. The results of our work indicate that highest inhibition efficiency exhibited by Poupartia birrea is 70%. The inhibiting effect of the studied extract could be attributed to the presence of phytochemical constituents present in the extract that are adsorbed on the surface of the mild steel. The plant extract can, hence, be considered as being eco-friendly and an effective green corrosion inhibitor for mild steel exposed to an acid medium.
2
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Corrosion inhibition of mild steel in HCl solution by Tinidazole

88%
Reza I., Saleemi A., Naveed S.
Polish Journal of Chemical Technology
|
2011
|
vol. 13
|
issue 1
67-71
EN
Tinidazole, a pharmaceutical compound has been investigated with reference to the inhibition of mild steel acidic corrosion in 1 molar HCl by means of weight loss and electrochemical measurements. The outcomes attained at 30°C revealed that the Tinidazole had obtained 90% inhibition efficiency at 400 ppm concentration. These results explain that the inhibition process occurs by means of adsorption. The inhibitor molecules adsorb on the surface of the metal, following Langmuir's adsorption isotherm. Potentiodynamic polarization measurements established that Tinidazole is an inhibitor of a mixed type. An appropriate equivalent electric circuit for modeling and the analysis of impedance data to give a better explanation of the process of corrosion inhibition have been proposed.
3
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Investigating the extract constituents and corrosion inhibiting ability of Sida acuta leaves

88%
Adindu Chinonso B., Oguzie Emeka E.
World News of Natural Sciences
|
2017
|
vol. 13
63-81
EN
Constituents of the ethanol extract of Sida acuta (SA) leaves were investigated by phytochemical, GC-MS and FTIR studies and its corrosion inhibition effects on mild steel was studied in 1 M HCl and 0.5 M H2SO4 solutions, using gravimetric and electrochemical methods of corrosion monitoring. The surface morphology of the mild steel surface before and after corrosion was also assessed using SEM imaging. The phytochemical, GC-MS and FTIR results revealed that SA contains carbonyl groups, aromatic rings, and double bonds that make it a prospective corrosion inhibitor for mild steel. Moreover, gravimetric results indicated that SA is an effective additive for the corrosion of mild steel at all the concentrations studied. Finally, the electrochemical results showed that SA inhibited both the anodic and cathodic half reactions by the adsorption of the extract constituents on the mild steel surface; this was further confirmed by the SEM investigations.
4
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Sustainable use of Natural Resources as Alternative for the Hazardous Corrosion Inhibitor of Mild Steel/Dilute Sulfuric Acid Interface: Weight Loss, EIS, AFM and FTIR Studies

63%
Tezeghdenti M., Etteyeb N., Dhouibi L., Kanoun O.
Archives of Metallurgy and Materials
|
2018
|
vol. 63
|
issue 2
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