The role of aqueous Ocimum Basilicum extract for monitoring the corrosion inhibition of carbon steel used in sanitation plants and its effect on Escherichia coli

Authors

  • El Aziz Fouda S. Abd El-Mansoura University, Department of Chemistry, Faculty of Science, El-Mansoura, Egypt Author
  • Khateeb Ayman Y. El Mansoura University, Department of Agric. Chemistry, Faculty of Agriculture, Mansoura, Egypt Author
  • Zhery Hesham H. El Umm Al-Qura University, Health Science College at Al Leith, KSA, Egypt Author
  • Mohamed Fakih Lab manager in Talkha sanitation plant, water and Waste water company, Daqahlia, Egypt Author

DOI:

https://doi.org/10.5937/ZasMat1604583F

Keywords:

Ocimum Basilicum, EDX -SEM, sanitation plants, Escherichia coli

Abstract

The inhibitive effect of aqueous plant extract of Ocimum Basilicum was tested as green corrosion extract for CS(CS) in 3.5% NaCl and 16 ppm Na2S. It has excellent inhibition efficiency (% P) of about 88% provided by weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and electrochemical frequency modulation (EFM) measurements. The increase of the extract concentration leads to increase in the % P. The adsorption of the extract on the CS surface obeys Langmuir adsorption isotherm with physical adsorption on the metal surface. The analysis of EDX and SEM confirmed the formation of the extract precipitates on the metal surface, reducing the corrosion reaction. The biological test of the extract on Escherichia Coli culture shows that there no effect on the biological activity of Escherichia Coli and can be applied safely without any harmful effect on sanitation plants.

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Published

15-12-2016

Issue

Vol. 57 No. 4 (2016)

Section

Articles