Research into adsorption dynamics of multi-component drain water from coal operations using sorbing agents of various kinds
L.A. Ivanova, I.V. Timoshchuk, P.P. Ivanov, A.K. Gorelkina
Kemerovo State University, Kemerovo, Russian Federation
Russian Mining Industry №6/ 2025 p. 157-162
Abstract: This paper investigates the dynamics of Fe3+, Mn2+, SO42–, NO2– ion adsorption using sorbing agents of various kinds when a combination of these ions is present in mine drain water. In the case of a simulated mixture of cations and anions in the solution, it can be noted that for sorbing agents of the KAU, AS and ODM-2F brands, the presence of iron ions in the solution reduces the adsorption of manganese ions. For sorbing agents of the Purolat-Standard and SKD-515 brands, a mutual increase in the sorption capacity for iron and manganese ions is observed. Joint presence of cations and anions increases the degree of purification from sulphate ions for the Purolat-Standard, KAU, AS, and ODM-2F sorbing agents as compared to adsorption of individual substances in the solution. The dynamic capacity of the sorbing agents for sulphate ions is 3–6 times lower than that for the iron ions, which makes it possible to propose pre-treatment of the drain water to remove sulphate and nitrite ions, followed by settling in the flocculant settling tanks and filtration through sand filters. In the case of ion adsorption from a model mixture, an increase in the degree of purification for nitrite ions is observed for sorbing agents of the KAU and AS SKD-515 brands. The analysis allowed us to conclude that neither sorbing agent used for the purification of the drain water, which is a mixture of anions and cations, is entirely preferable, which in turn requires formation of a complex mixture of various kinds of sorbing agents.
Keywords: adsorption, sorbing agents, activated carbon, iron, manganese, sulphate ions, nitrite ions, wastewater
Acknowledgments: The research is conducted as part of the comprehensive scientific and technical program of a complete innovative cycle “Development and implementation of a complex of technologies in the fields of exploration and extraction of minerals, ensuring of industrial safety, bioremediation, creation of new products of deep processing of coal raw materials with consecutive amelioration of ecological impact on the environment and risks to human life”, approved by the Decree of the Government of the Russian Federation from 11.05.2022 No. 1144-r, agreement No. 075-15-2022- 1201 dated 30.09.2022
For citation: Ivanova L.A., Timoshchuk I.V., Ivanov P.P., Gorelkina A.K. Research into adsorption dynamics of multi-component drain water from coal operations using sorbing agents of various kinds. Russian Mining Industry. 2025;(6):157–162. (In Russ.) https://doi.org/10.30686/1609-9192-2025-6-157-162
Article info
Received: 02.09.2025
Revised: 23.10.2025
Accepted: 27.10.2025
Information about the authors
Ludmila A. Ivanova – Cand. Sci. (Eng.), Associate Professor, Department of Technosphere Safety, Kemerovo State University, Kemerovo, Russian Federation; https://orcid.org/0000-0002-4103-8780; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Irina V. Timoshchuk – Dr. Sci. (Eng.), Professor, Department of Technosphere Safety, Kemerovo State University, Kemerovo, Russian Federation; https://orcid.org/0000-0002-1349-2812; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Pavel P. Ivanov – Cand. Sci. (Eng.), Associate Professor, Department of Mechatronics and Automation of Technological Systems, Kemerovo State University, Kemerovo, Russian Federation; https://orcid.org/0000-0002-8086-3273; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Alena K. Gorelkina – Dr. Sci. (Eng.), Professor, Department of Technosphere Safety, Kemerovo State University, Kemerovo, Russian Federation; https://orcid.org/0000-0002-3782-2521; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
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