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Comparative study on the inhibitive effect of Sulfadoxine–Pyrimethamine and an industrial inhibitor on the corrosion of pipeline steel in petroleum pipeline water
- Source :
- Arabian Journal of Chemistry, Vol 12, Iss 7, Pp 1024-1034 (2019)
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- The corrosion inhibition characteristics of Sulfadoxine plus Pyrimethamine (S&P) was evaluated and compared with the inhibition performance of an industrial corrosion inhibitor (S-Ind) under anaerobic condition. Modified gravimetric and electrochemical techniques were used. The corrosion inhibition efficiencies of both S&P and S-Ind were comparable for all the techniques applied. S&P gave slightly higher inhibition efficiency, while S-Ind gave a more steady corrosion protection. The corrosion inhibition efficiencies increased with increased concentration of both substances. The polarization curves showed mixed inhibition behavior for both S&P and S-Ind. A mechanism of chemisorption was proposed for the adsorption of S&P and S-Ind on pipeline steel surface, while the negative Gibbs free energy of adsorption values indicates a spontaneous adsorption process. The adsorption characteristics of the inhibitors were fitted into Langmuir adsorption isotherm. Keywords: Adsorption, Anaerobic, Corrosion, Inhibitor, Modified gravimetric, Pipeline steel
- Subjects :
- Anaerobic
Inhibitor
Chemistry(all)
General Chemical Engineering
Mixed inhibition
Corrosion
lcsh:Chemistry
symbols.namesake
Corrosion inhibitor
chemistry.chemical_compound
Adsorption
Polarization (electrochemistry)
Metallurgy
Langmuir adsorption model
General Chemistry
Pipeline steel
lcsh:QD1-999
Modified gravimetric
chemistry
Chemisorption
Chemical Engineering(all)
symbols
Gravimetric analysis
Nuclear chemistry
Subjects
Details
- ISSN :
- 18785352
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Arabian Journal of Chemistry
- Accession number :
- edsair.doi.dedup.....453dd35e45525d1c84133546d85ebe62