Linear Polarization Study of the Corrosion of Iron in the Presence of Thiobacillus ferrooxidans Bacteria
Apstrakt
An electrochemical investigation was conducted to evaluate the corrosion behavior of iron in deionized water (DIW) and medium salt in the pH range of 1 to 4. The times of immersion of the electrode in solutions were changed in the range of 0 to 120 hours. Corrosion currents were determined using the linear polarization technique. Tafel slopes, b(a) and b(c) were also determined by Tafel polarization measurements. The effect of Thiobacillus ferrooxidans on the iron corrosion behavior was noticed in both solutions at pH=1. However, a significant difference between DIW and medium salt existed. While in DIW the corrosion increased continuously with time (after first 24 hours) in medium salt it started to increase after five hours, showing the loss of inhibition properties of a protective layer. The increase in current in the presence of bacteria at pH of 1 was noticed: from 205 nA to 320 nA, and from 175 nA to 400 nA, for DIW and medium salt, respectively.
Ključne reči:
Thiobacillus ferrooxidans / pure water / medium salt / Linear polarization method / iron / inhibition effectIzvor:
International Journal of Electrochemical Science, 2012, 7, 3, 2487-2503Izdavač:
- Electrochemical Science Group, Beograd
Finansiranje / projekti:
- Razvoj tehnoloških procesa prerade nestandardnih koncentrata bakra u cilju optimizacije emisije zagađujućih materija (RS-MESTD-Technological Development (TD or TR)-34023)
Institucija/grupa
Institut za tehnologiju nuklearnih i drugih mineralnih sirovinaTY - JOUR AU - Vuković, Milovan AU - Pesić, Batric AU - Štrbac, Nada AU - Mihajlović, Ivan AU - Sokić, Miroslav PY - 2012 UR - https://ritnms.itnms.ac.rs/handle/123456789/246 AB - An electrochemical investigation was conducted to evaluate the corrosion behavior of iron in deionized water (DIW) and medium salt in the pH range of 1 to 4. The times of immersion of the electrode in solutions were changed in the range of 0 to 120 hours. Corrosion currents were determined using the linear polarization technique. Tafel slopes, b(a) and b(c) were also determined by Tafel polarization measurements. The effect of Thiobacillus ferrooxidans on the iron corrosion behavior was noticed in both solutions at pH=1. However, a significant difference between DIW and medium salt existed. While in DIW the corrosion increased continuously with time (after first 24 hours) in medium salt it started to increase after five hours, showing the loss of inhibition properties of a protective layer. The increase in current in the presence of bacteria at pH of 1 was noticed: from 205 nA to 320 nA, and from 175 nA to 400 nA, for DIW and medium salt, respectively. PB - Electrochemical Science Group, Beograd T2 - International Journal of Electrochemical Science T1 - Linear Polarization Study of the Corrosion of Iron in the Presence of Thiobacillus ferrooxidans Bacteria EP - 2503 IS - 3 SP - 2487 VL - 7 UR - conv_1068 ER -
@article{ author = "Vuković, Milovan and Pesić, Batric and Štrbac, Nada and Mihajlović, Ivan and Sokić, Miroslav", year = "2012", abstract = "An electrochemical investigation was conducted to evaluate the corrosion behavior of iron in deionized water (DIW) and medium salt in the pH range of 1 to 4. The times of immersion of the electrode in solutions were changed in the range of 0 to 120 hours. Corrosion currents were determined using the linear polarization technique. Tafel slopes, b(a) and b(c) were also determined by Tafel polarization measurements. The effect of Thiobacillus ferrooxidans on the iron corrosion behavior was noticed in both solutions at pH=1. However, a significant difference between DIW and medium salt existed. While in DIW the corrosion increased continuously with time (after first 24 hours) in medium salt it started to increase after five hours, showing the loss of inhibition properties of a protective layer. The increase in current in the presence of bacteria at pH of 1 was noticed: from 205 nA to 320 nA, and from 175 nA to 400 nA, for DIW and medium salt, respectively.", publisher = "Electrochemical Science Group, Beograd", journal = "International Journal of Electrochemical Science", title = "Linear Polarization Study of the Corrosion of Iron in the Presence of Thiobacillus ferrooxidans Bacteria", pages = "2503-2487", number = "3", volume = "7", url = "conv_1068" }
Vuković, M., Pesić, B., Štrbac, N., Mihajlović, I.,& Sokić, M.. (2012). Linear Polarization Study of the Corrosion of Iron in the Presence of Thiobacillus ferrooxidans Bacteria. in International Journal of Electrochemical Science Electrochemical Science Group, Beograd., 7(3), 2487-2503. conv_1068
Vuković M, Pesić B, Štrbac N, Mihajlović I, Sokić M. Linear Polarization Study of the Corrosion of Iron in the Presence of Thiobacillus ferrooxidans Bacteria. in International Journal of Electrochemical Science. 2012;7(3):2487-2503. conv_1068 .
Vuković, Milovan, Pesić, Batric, Štrbac, Nada, Mihajlović, Ivan, Sokić, Miroslav, "Linear Polarization Study of the Corrosion of Iron in the Presence of Thiobacillus ferrooxidans Bacteria" in International Journal of Electrochemical Science, 7, no. 3 (2012):2487-2503, conv_1068 .