<i>Cocos nucifera</i> Surfactant Performance on Stainless Steel in Hcl and H<sub>2</sub>SO<sub>4</sub> Solutions

Author:

Fajobi Muyiwa Adedapo1,Loto Roland Tolulope1,Akande Itopa Godwin2,Araoyinbo Alaba1

Affiliation:

1. Covenant University

2. University of Ibadan

Abstract

The corrosion inhibition effect of Cocos nucifera (CN) surfactant inhibitor, has been inspected on 316L steel in 5 M HCl and H2SO4 solutions by weight loss (WL) method. The results revealed that the presence of alkanols, glycosides, steroids and terpenoids in CN surfactant supported the inhibitor by retarding corrosion effect to give an optimum inhibition efficiency of 93.71% in HCl and 89.66% in H2SO4 solutions after 504 h. Also, the regression values for both acidic solutions were close to unity after obeying Langmuir isotherm adsorption mechanism with 0.9971 for HCl and 0.9882 for H2SO4 solution. The result confirms that CN surfactant inhibitor performed better in HCl solution than in H2SO4 solution. Keywords: Corrosion inhibitor; active components; austenitic 316L material; weight loss method; adsorption isotherm.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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