Hydrogen Sulphide in Industrial Enterprises Water Management Infrastructure - The Factor of Chemical and Microbiological Corrosion Concrete Degradation of Water Facilities
| Autor: | Olena Bryhada, Larysa Mykhailova, Volodymyr Sierohlazov, Oksana Melnikova, Valentyna Iurchenko |
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| Rok vydání: | 2021 |
| Předmět: |
Concrete degradation
Materials science Waste management Mechanical Engineering Hydrogen sulfide 0211 other engineering and technologies 02 engineering and technology Hydrogen sulphide Condensed Matter Physics Corrosion chemistry.chemical_compound 020303 mechanical engineering & transports 0203 mechanical engineering chemistry Mechanics of Materials 021105 building & construction General Materials Science Drainage |
| Zdroj: | Materials Science Forum. 1038:401-406 |
| ISSN: | 1662-9752 |
| Popis: | The durability of concrete, the material which is widely used for water facilities depends on accumulation in operational environments (drain water, air-gas space) of hydrogen sulfide. Now the mechanism of corrosion destruction of concrete in drainage pipelines is represented as result of biogenous sulphuric acid aggression – influence of the sulphuric acid formed by thionic bacteria. The analysis of data on H2S concentration in drain waters of various industrial enterprises demonstrates that they create in gaseous operational media H2S concentration, sufficient for development in aerobic conditions of thionic bacteria. As the results of urban sewer networks inspection have shown, the correlation between concentration of H2S in aqueous phase and its concentration in air environment, between concentration of H2S in air environment and the corrosion rate of concrete’s coffering part is observed. Chemical and X-ray crystallography of this concrete showed that in corrosive concrete decreases pH, reaching in some examples of values 1-2, and sulfates collect. In dynamics of corrosion process the exponential growth of concentration in concrete of extremely acidophilic thionic bacteria is noted. |
| Databáze: | OpenAIRE |
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