About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Elizaveta Yu. Ermilova, candidate of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0002-8091-4851 Kristina F. Mukhamadyarova, engineer, State Unitary Enterprise “Tatinvestgrazhdanproekt”, Kazan, Russian Federation Azalia A. Gaifullina, engineer, LLC “RS-CONCEPT”, Kazan, Russian Federation. |
| Title of the article | The influence of liquid temperature on the sorption capacity of natural clays in water purification processes from iron ions Fe (+3) |
| Abstract. | Problem statement. In recent years with industrial growth and development, the issue of cleaning and recycling polluted wastewater has been increasingly raised. The most dangerous common wastewater pollutants are heavy metals: chromium, iron, manganese, mercury, cadmium, lead, nickel, etc. To clean wastewater from such pollutants, it is advisable to use the adsorption method. Along with carbon sorbents, natural sorbents based on aluminosilicates are gaining popularity. Among the latter, scientists highlight montmorillonite clays due to their well-swelling structure, capable of retaining ions of heavy metals. At the same time, wastewater often has an elevated temperature, differing from the traditional laboratory test temperature of 20 °C. In this regard, the aim of this study is to investigate the effect of the initial liquid temperature on iron ion removal during sorption water treatment with aluminosilicates. Based on this objective, the following research tasks were addressed: to determine the sorption capacity of clays for iron ion content before and after sorption processes, depending on the initial liquid temperature, as well as the effect of the initial liquid temperature on pH changes during sorption. Results. For every 20°C increase in the initial liquid temperature, the sorption capacity of clay materials increases by an average of 5% after 30 minutes of sorbate-sorbent contact. Optimal contact time is 30 minutes, however, when the contact duration reaches 60 minutes, the reverse process of desorption occurs. Conclusions. The research results presented in this article have practical implications for the technological treatment of both natural and wastewater for iron ion removal. Furthermore, the use of polymineral clays suggests the possibility of using local natural aluminosilicates as raw materials for sorption treatment, which will increase its efficiency and reduce process costs. |
| Keywords. | sorption materials, iron ions, montmorillonite, polymineral clay, kaolinite, spectrophotometer |
| For citations: | Ermilova E.Yu., Mukhamadyarova K.F., Gaifullina A.A. The influence of liquid temperature on the sorption capacity of natural clays in water purification processes from iron ions Fe (+3) // News of KSUAE, 2025, № 4 (74), p. 87-97, DOI: 10.48612/NewsKSUAE/74.8, EDN: INJFSW |
