Sumac (Rhus) Extract as Green Inhibitor for Steel in Seawater

Authors(3) :-Rana Afif Anaee, Hiba Anwer Abdulahh, Mohammed Ali Tareq

Sumac extract was tested as green inhibitor for steel in seawater (3.5wt.% NaCl) at room temperature with five concentrations include 4, 6, 8, 12 and 16 mL/L. Corrosion tests were investigated by Potentiostat at 5 mV.sec-1 scan rate, and the data measured by Tafel extrapolation method such as corrosion potential, corrosion current density and Tafel slopes. Inhibition efficiencies were calculated and indicated that 8 mL/L was the best concentration for inhibition. Sumac extract was anodic inhibitor type and obeys Langmuir adsorption isotherm with R2 equal to 0.992. The equilibrium constant of the adsorption-desorption process and the apparent free energy of adsorption also calculated which were 0.66313 and - 8.7370 kJ.mol-1 respectively. FTIR spectroscopy was used to test film formed on steel surface compared with FTIR spectrum of Sumac powder. This test showed the decreasing in intensities of main peaks due to formation Fe2+ organic molecules complexes at functionally groups.

Authors and Affiliations

Rana Afif Anaee
Department of Materials Engineering, University of Technology, Baghdad, Iraq
Hiba Anwer Abdulahh
Department of Materials Engineering, University of Technology, Baghdad, Iraq
Mohammed Ali Tareq
Department of Materials Engineering, University of Technology, Baghdad, Iraq

Sumac extract; green inhibitor; carbon steel; seawater.

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Publication Details

Published in : Volume 2 | Issue 1 | January-February 2016
Date of Publication : 2016-02-25
License:  This work is licensed under a Creative Commons Attribution 4.0 International License.
Page(s) : 353-358
Manuscript Number : IJSRSET162188
Publisher : Technoscience Academy

Print ISSN : 2395-1990, Online ISSN : 2394-4099

Cite This Article :

Rana Afif Anaee, Hiba Anwer Abdulahh, Mohammed Ali Tareq, " Sumac (Rhus) Extract as Green Inhibitor for Steel in Seawater, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 2, Issue 1, pp.353-358, January-February-2016.
Journal URL : http://ijsrset.com/IJSRSET162188

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