Study of the Behavior of Sodium Diclofenac Expired Drug as an Corrosion Inhibitor of Iron in Sulfuric Acid Using UV-VIS Spectrophotometry

Authors

  • Aisha AL-abbassi  Chemistry Department, Faculty of science/ Sebha University, Sebha Sebha, Libya
  • Gehan Taher  Chemistry Department, Faculty of science/ Sebha University, Sebha Sebha, Libya
  • Emdallah Matrood  Chemistry Department, Faculty of science/ Sebha University, Sebha Sebha, Libya
  • Abdulrahman Dnkm  Chemistry Department, Faculty of science/ Sebha University, Sebha Sebha, Libya
  • Akram Sallh  Chemistry Department, Faculty of science/ Sebha University, Sebha Sebha, Libya
  • Raga Izrik  Chemistry Department, Faculty of science/ Sebha University, Sebha Sebha, Libya
  • Mohammed Suliman  Chemical engineering department, Faculty of Power and Mining /Sebha University, Libya

DOI:

https://doi.org//10.32628/IJSRSET207248

Keywords:

Iron, Inhibitor, Expired Drug, Sodium Diclofenac, Spectrophotometry, Adsorption Isotherm

Abstract

The effect of Sodium Diclofenac (SD) as an inhibitor of pure iron corrosion in a 1.0 N of sulfuric acid was studied spectrally using a UV-VIS at different temperatures of 343.15, 323.15, 303.15 K. The concentration of dissolved iron was determined spectrally using phenanthroline method. The absorbance of each solution was measured at different times, and the data obtained were used to calculate the corrosion rate, which was found to be a zero-order reaction in the presence and absence of the SD inhibitor. The absorbance was decreased with an increase in inhibitor concentration and an increase in temperature. However, the inhibition efficiency was increased with inhibitor concentration an increase. The inhibitor is adsorbed on the surface of the iron particles according to the Langmuir and Kinetic-thermodynamic model of adsorption isotherm. The results indicated that the reaction is endothermic and unspontaneous. Quantum chemical parameters such as the highest & lowest occupied molecular orbital energy (EHOMO) & (ELUMO), energy gap (ΔE), were calculated and correlated to the experimental data.

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International Journal of Scientific Research in Science, Engineering and Technology

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Published

2020-04-30

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Volume 7, Issue 2, March-April-2020

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Research Articles

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[1]
Aisha AL-abbassi, Gehan Taher, Emdallah Matrood, Abdulrahman Dnkm, Akram Sallh, Raga Izrik, Mohammed Suliman, " Study of the Behavior of Sodium Diclofenac Expired Drug as an Corrosion Inhibitor of Iron in Sulfuric Acid Using UV-VIS Spectrophotometry, International Journal of Scientific Research in Science, Engineering and Technology(IJSRSET), Print ISSN : 2395-1990, Online ISSN : 2394-4099, Volume 7, Issue 2, pp.233-242, March-April-2020. Available at doi : https://doi.org/10.32628/IJSRSET207248