Anti-corrosive properties of S. tinctoria and G. ouregou alkaloid extracts on low carbon steel

A. Lecante 1 F. Robert 1 P.A. Blandinières 1 C. Roos 1
1 ECOFOG - Ecologie des forêts de Guyane
Abstract : The effect of alkaloid extracts from two Amazonian trees (Guatteria ouregou and Simira tinctoria) on low carbon steel corrosion was investigated in acidic solutions by using electrochemical techniques. All of these plant extracts inhibit the corrosion of low carbon steel in 0.1 M HCl solutions. As their concentration increases to 250 mg/L, the inhibition efficiencies of S. tinctoria and G. ouregou alkaloid extracts reach approximately 92% in 0.1 M HCl solutions. The adsorption of the inhibitor molecules was in accordance with the Langmuir adsorption isotherm. The results obtained show that these plant extracts could be serve as an effective inhibitor for the corrosion of low carbon steel in hydrochloric acid media. Furthermore, harmane was identified as the main component of S. tinctoria extract and that suggests that it is the active ingredient against corrosion of low carbon steel.
Keywords : Low carbon steel Acidic media Corrosion inhibitor Plant extract EIS
Type de document :
Article dans une revue
Current Applied Physics, Elsevier, 2011, 11 (3), pp.714-724. 〈10.1016/j.cap.2010.11.038〉
Liste complète des métadonnées
https://hal-agroparistech.archives-ouvertes.fr/hal-01096888
Contributeur : Carole Legrand <>
Soumis le : jeudi 18 décembre 2014 - 13:48:25
Dernière modification le : mercredi 18 juillet 2018 - 20:11:28

Identifiants

Collections

AGROPARISTECH | CIRAD | INRA | ECOFOG

Citation

A. Lecante, F. Robert, P.A. Blandinières, C. Roos. Anti-corrosive properties of S. tinctoria and G. ouregou alkaloid extracts on low carbon steel. Current Applied Physics, Elsevier, 2011, 11 (3), pp.714-724. 〈10.1016/j.cap.2010.11.038〉. 〈hal-01096888〉

Exporter

BibTeX TEI DC DCterms EndNote

Partager

Métriques

Consultations de la notice

115

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD