African Journal of
Pure and Applied Chemistry

  • Abbreviation: Afr. J. Pure Appl. Chem.
  • Language: English
  • ISSN: 1996-0840
  • DOI: 10.5897/AJPAC
  • Start Year: 2007
  • Published Articles: 357

Full Length Research Paper

Kinetics of the corrosion of mild steel in petroleum-water mixture using ethyl ester of lard as inhibitor

Jerome Anguel Undiandeye
  • Jerome Anguel Undiandeye
  • Department of Chemical Engineering, Modibbo Adama University of Technology Yola, Adamawa State, Nigeria
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Ternenge Joseph Chior
  • Ternenge Joseph Chior
  • Department of Chemical Engineering, Modibbo Adama University of Technology Yola, Adamawa State, Nigeria
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Abubakar Mohammed
  • Abubakar Mohammed
  • Department of Chemical Engineering, Modibbo Adama University of Technology Yola, Adamawa State, Nigeria
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Julius Chigozie Offurum
  • Julius Chigozie Offurum
  • 2Department of Chemical Engineering, Imo State Polytechnic, Umuagwo-Ohaji, Imo State, Nigeria
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  •  Received: 04 March 2013
  •  Accepted: 25 October 2013
  •  Published: 27 March 2014

Abstract

Ethyl Esters of Pork Oil (EEL) has been investigated as a mild steel corrosion inhibitor in petroleum-water mixture by weight-loss tests at different concentrations (0.1l, 0.2, 0.3, 0.4 and 0.5g/L) of inhibitor, and at temperatures of 303, 313, 323 and 333K. Results show that inhibition efficiency increases as the inhibitor concentration increases, decreases with temperature, and follows the Langmuir adsorption isotherm. It was found that the adsorption of the ethyl ester on mild steel is by physical adsorption. For the trans-esterification process, the optimal parameters needed for the optimal yield of the ester were: reaction time of 120 min, temperature of 75°C, content of catalyst of 1% and alcoholic content of 72 cm3.

 

Key words: Corrosion inhibitor, ethyl ester, pork oil, mild steel, petroleum-water mixture.