Căta Adina

Ienaşcu Ioana Maria Carmen

Sfirloaga Paula

Tăranu Bogdan

Ștefănuț Mariana Nela

English

University of Szeged

26th International Symposium on Analytical and Environmental Problems 326  NATURAL COMPOUNDS FOR ECO-FRIENDLY CORROSION INHIBITION OF STEEL PIPELINES  Mariana Nela Ştefãnuţ 1*, Adina Cãta 1, Bogdan Țăranu1, Paula Sfirloaga1, Ioana Maria Carmen Ienaşcu 1,2  1National Institute of Research and Development for Electrochemistry and Condensed Matter, Dr. A. P. Podeanu 144, 300569 Timişoara, Romania *Corresponding author’s email address: mariana.stefanut@gmail.com 2“Vasile Goldiş” Western University of Arad, Faculty of Pharmacy, 86 Liviu Rebreanu, 310045, Arad, Romania Abstract Steel pipes are used for industrial fluids transport. Extracts with natural compounds from some Brassicaceae sources showed important anticorrosion effects on steel material. Extracts of broccoli, cabbage, black radish, rapeseed and cauliflower were electrochemically tested in H2SO4 0.5M, in a conventional glass three-electrode cell with a Pt counter electrode, saturated calomel (SCE) as reference electrode and steel working electrode (WE). Electrochemical experiments (Tafel curves) were performed with a Voltalab 80 (Radiometer, Copenhagen) equipped with a Volta Master7 software. The potentiodynamic measurements were started at -600 mV cathodic potential to anodic potential +250 mV, at a scan rate 1 mV/s and room temperature. Before each experiment, open circuit (OPC) was applied to WE during 30 minutes.    Figure 1. Tafel curves (extracts from 0.05g dried material)  The corrosion rate decreased from 119 mm/year in case of sulfuric acid 0.5M to about 2-7 mm/year when concentrated extracts were used. Surface morphology of WE were studied after work using a SEM method (Scanning Electron Microscope Inspect S + EDAX Genesis XM 2i (FEI, Holland), at HV = 30.00 kV and at magnification 3000, in vacuum mode.  [1] Ngobiri N.C., Oguzie E.E., Li Y., Liu L., Oforka N.C., Akaranta O., Eco-friendly Corrosion Inhibition of pipeline steel using Brassica Oleracea, Hindawi Publishing Corporation, International Journal of Corrosion, vol.2015, http://dx.doi.org./10.1155/2015/404139.   

Natural compounds for eco-friendly corrosion inhibition of steel pipelines

http://acta.bibl.u-szeged.hu/74027/1/proceedings_of_isaep_2020_326.pdf

Natural compounds for eco-friendly corrosion inhibition of steel pipelines

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