Journal of Electrochemical Science and Technology

The Korean Electrochemical Society (한국전기화학회)
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Corrosion Inhibition of Mild Steel in Acidic Medium by Jathropha Curcas Leaves Extract

  • Odusote, Jamiu K. (Department of Materials and Metallurgical Engineering, University of Ilorin) ;
  • Ajayi, Olorunfemi M. (Department of Mechanical Engineering, University of Ilorin)
  • Received : 2013.06.21
  • Accepted : 2013.06.26
  • Published : 2013.06.30
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Abstract

Inhibition of corrosion of mild steel in sulphuric acid by acidic extract of Jatropha Curcas leaves has been studied using weight loss and thermometric measurements. It was found that the leaves extract act as a good corrosion inhibitor for mild steel in all concentrations of the extract. The inhibition action depends on the concentration of the Jatropha Curcas leaves extract in the acid solution. Results for weight loss and thermometric measurements indicate that inhibition efficiency increase with increasing inhibitor concentration. The adsorption of Jatropha curcas leaves extract on the surface of the mild steel specimens obeys Langmuir adsorption isotherm. Based on the results, Jatropha curcas leaves extract is recommended for use in industries as a replacement for toxic chemical inhibitors.

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