INVESTIGATION OF AGERATUM CONYZOIDES AQUEOUS EXTRACT AS INHIBITOR FOR HYDROCHLORIC ACID CORROSION OF SX 316 STEEL

Authors

  • Adeyemi O.O. Department of Chemical Sciences, Olabisi Onabanjo University, P.O. Box 364, Ago-Iwoye, Nigeria
  • Olubomehin O.O Department of Chemical Sciences, Olabisi Onabanjo University, P.O. Box 364, Ago-Iwoye, Nigeria
  • Bello R.O. Department of Chemical Sciences, Olabisi Onabanjo University, P.O. Box 364, Ago-Iwoye, Nigeria

Keywords:

Acid corrosion, natural product, inhibition, steel

Abstract

The inhibitive effect of the extract of Ageratum conyzoides on corrosion of SX 316 steel in HCl solution was determined using weight loss measurement and galvanostatic polarisation techniques. It was found that the presence of the plant extract reduces markedly the corrosion of steel in acid solution and inhibition efficiency ranged between 94.39 ? 99.15 %. The inhibition efficiency increases as the plant extract concentration was increased. The inhibitive effect of A. conyzoides extract (ACE) was discussed on the basis of adsorption of the components on the metal surface. Negative value of energy of adsorption indicates the spontaneity of the process.

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Published

2022-04-27

Issue

Vol. 8 No. 1 (2014): Academy Journal of Science and Engineering (AJSE)

Section

Articles

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