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A Comprehensive Study on Crude Methanolic Extract of Daphne gnidium L. as Effective Corrosion Inhibitors of Mild Steel Induced by SRB Consortium

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Academic year: 2021

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A Comprehensive Study on Crude Methanolic Extract of Daphne

gnidium L. as Effective Corrosion Inhibitors of Mild Steel Induced

by SRB Consortium

Auteurs:

 Djamila Djouahra-Fahem,

 Yassmina Angar,

 Lamine Mohamed Gana,

 Faiza Khoukhi &

 Salima Kebbouche-Gana

Revu :Journal of Bio- and Tribo-Corrosion volume :5 Numéro:18  80 Accesses  4 Citations  Metrics details Abstract

The aim of the present work is the evaluation of effect of methanolic extract obtained from Daphne gnidium against biocorrosion caused by

sulphate-reducing bacteria (SRB). Herein, the study of the influence of SRB consortium has been realized on the biological and electrochemical properties of the carbon steel API5LX60 immersed in water sample obtained from an Algerian oil field separator. The monitoring of the treatment effects on the SRB performance using kits test and weight loss methods showed a positive effect of the

methanolic extract of D. gnidium as a corrosion inhibitor at a concentration of 0.8 g/L. In the other hand, the weight loss test has generated an efficiency rate of 95.99% at a concentration of 1.6 g/L. A linear polarization resistance approved these results, and they have given a yield of 91.14% with a polarization

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