The study of inhibiting structural material corrosion in water recycling systems by sodium hydroxide
DOI:
https://doi.org/10.15587/1729-4061.2017.95989Keywords:
circulating water, corrosion, carbon steel, grey cast iron, mineralization, sodium hydroxideAbstract
Influence of sodium hydroxide on the rate and nature of corrosion of St3 carbon steel and SCh 18–36 grey cast iron in highly mineralized recycling water was studied. The nature of the corrosion damage was determined and the weight index of corrosion of these alloys was calculated. By means of polarization measurements, the electrochemical indices of anodic processes on steel and cast iron were determined. The effect of the circulating water pH on behavior of steel and cast iron under anodic polarization has been studied by cyclic voltammetry. It has been shown that the effective impact of pH on characteristics of the anode processes occured at pH≥11.4. At these pH values, the metal steady-state potential shifted to a region of positive values which was an indication of inhibition of the anodic process itself. At pH≥11.4, the pitting potential significantly shifted to the positive side: the process of healing pits was faster than their formation. It has been established that steel and especially cast iron tend to pass into a passive state at pH>10. The corrosion rate values did not exceed this index for the studied alloys in distilled water and were in the range of acceptable values. Thus, it is possible to effectively inhibit the rate of steel and cast iron corrosion, especially in the waterline zone by shifting the pH of the circulating water to the alkaline region. As a result of the conducted studies, optimal working conditions for iron alloys as the most technically important structural materials for designing closed cycles of circulating water supply systems have been established.References
- Stalinskij, D. V., Jepshtejn, S. I., Muzykina, Z. S. (2012). Eeffektivnye sistemy vodosnabzhenija, ochistki promyshlennyh i hozjajstvenno-bytovyh stokov. Jekologija i promyshlennost', 4, 4–9.
- Bolotova, Ju. V., Ruchkinova, O. I. (2015). Korrozija teploobmennogo oborudovanija neftehimicheskih proizvodstv. Vestnik PNIPU. Serija: Mashinostroenie, materialovedenie, 17 (4), 102–119.
- Gavrilov, N. B. (2008). Reagentnaja obrabotka oborotnoj ohlazhdajushhej vody. Himicheskaja tehnologija, 9 (7), 340–344.
- Chichenin, V. V., Kishnevskij, V. A., Gricaenko, A. S., Savich, S. L., Shulyak, I. D. (2015). Study of corrosion rate and deposit accumulation under circulating water concentration in industrial applications. Eastern-European Journal of Enterprise Technologies, 6 (8 (78)), 34–40. doi: 10.15587/1729-4061.2015.54752
- Nesterenko, S. V., Kachanov, V. A., Grigorov, V. I., Kancedal, L. D. (2008). Ingibirovanie i baktericidnaja obrabotka podpitochnoj vody dlja zamedlenija korrozii v sisteme oborotnogo cikla pri ispol'zovanii fenol'nyh stochnyh vod koksohimicheskih proizvodstv. Vestnik NTU «KhPI». Ser.: Himija i himicheskaja tehnologija, 16, 88–92.
- Safin, D. H., Hasanova, D. I. (2010). Osobennosti primenenija fosfatnoj tehnologii ingibirovanija sistem vodooborota na OAO «Nizhnekamsneftehim». Korrozija: materialy i zashhita, 7, 7–12.
- Ushakov, G. V., Solodov, G. A., Mochal'nikov, S. V. (2007). Razrabotka ingibitora otlozhenija solej zhestkosti i korrozii v vodnyh sredah na osnove organicheskogo fosfonata dlja sistem oborotnogo vodosnabzhenija predprijatij himicheskoj i koksohimicheskoj promyshlennosti. Izvestija Tomskogo politehnicheskogo universiteta, 310 (1), 144–148.
- Chirkunov, A. A., Kuznecov, Yu. I., Kazanskij, L. P. (2007). Formirovanie zashhitnyh sloev na nizkouglerodistoj stali ingibitorom korrozii na osnove anavidina. Korrozija, materialy, zashhita, 9, 27–32.
- Tamazashvili, A. T., Mazna, M. I., Sirenko, L. V. (2012). Comparison of the efficiency of phosphate inhibitors of steel corrosion in tap water. Eastern-European Journal of Enterprise Technologies, 2 (13 (56)), 28–31. Available at: http://journals.uran.ua/eejet/article/view/3943/3611
- Hasanovа, D. I., Safin, D. H. (2014). Analiz prichin biootlozhenij v sistemah oborotnogo vodosnabzhenija neftehimicheskih proizvodstv. Jekologija i promyshlennost' Rossii, 4, 48–52.
- Cervova, J., Hagarova, M., Lackova, P. (2014). Corrosive protection of metal materials in cooling water. American Journal of Materials Science and Application, 2 (1), 6–10.
- Xu, P., Xu, Z., Wang, J., Zhang, Y., Liu, T. (2012). Microbiological Induced Corrosion on Brass in Recycling Cooling Water System Makeup by Reclaimed Water. Materials Sciences and Applications, 03 (04), 253–258. doi: 10.4236/msa.2012.34037
- Flemming, H.-C. (2009). Why Microorganisms Live in Biofilms and the Problem of Biofouling. Springer Series on Biofilms. Berlin Heidelberg: Springer-Verlag, 3–11. doi: 10.1007/978-3-540-69796-1_1
- Schweitzer, P. A. (2009). Fundamentals of corrosion: mechanisms, causes and preventative methods. New York: CRC Press, 416. doi: 10.1201/9781420067712
- Cicek, V. (2014). Corrosion Engineering. John Wiley & Sons, 288. doi: 10.1002/9781118720837
- Saha, J. K. (2013). Corrosion of Constructional Steels in Marine and Industrial Environment. Frontier Work in Atmospheric Corrosion. Springer India, 189. doi: 10.1007/978-81-322-0720-7
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2017 Alexei Pilipenko, Hanna Pancheva, Anna Reznichenko, Oksana Myrgorod, Nataliya Miroshnichenko, Alexander Sincheskul
This work is licensed under a Creative Commons Attribution 4.0 International License.
The consolidation and conditions for the transfer of copyright (identification of authorship) is carried out in the License Agreement. In particular, the authors reserve the right to the authorship of their manuscript and transfer the first publication of this work to the journal under the terms of the Creative Commons CC BY license. At the same time, they have the right to conclude on their own additional agreements concerning the non-exclusive distribution of the work in the form in which it was published by this journal, but provided that the link to the first publication of the article in this journal is preserved.
A license agreement is a document in which the author warrants that he/she owns all copyright for the work (manuscript, article, etc.).
The authors, signing the License Agreement with TECHNOLOGY CENTER PC, have all rights to the further use of their work, provided that they link to our edition in which the work was published.
According to the terms of the License Agreement, the Publisher TECHNOLOGY CENTER PC does not take away your copyrights and receives permission from the authors to use and dissemination of the publication through the world's scientific resources (own electronic resources, scientometric databases, repositories, libraries, etc.).
In the absence of a signed License Agreement or in the absence of this agreement of identifiers allowing to identify the identity of the author, the editors have no right to work with the manuscript.
It is important to remember that there is another type of agreement between authors and publishers – when copyright is transferred from the authors to the publisher. In this case, the authors lose ownership of their work and may not use it in any way.
