Abstract

Natural waters and wastewaters often contain heavy metals, e.g., iron. Iron ore mining contaminates groundwater with iron up to 30 maximal permissible concentrations (MPC) as this element gets washed out from rock and soil. Adsorption is the most effective and economically feasible method of additional purification of natural and wastewater from iron. Its efficiency depends on the type of adsorbent. The research objective was to select the most efficient sorption material to eliminate water from iron, as well as to establish the adsorption patterns for different sorbents, thus creating sustainable and effective purification.
The study featured carbonaceous sorbent of the SKD-515 grade, mineral sorption materials with aluminosilicate of the AC grade, and silicate-based sorbent of the ODM-2F grade. The porous structure was studied by porometry methods while the surface image was obtained using scanning electron microscopy. Other indicators included equilibrium, kinetics, and dynamics of iron adsorption by various sorbents.
The Freundlich and Langmuir equations made it possible to calculate the key adsorption parameters. The Gibbs energy values were obtained from the Langmuir equation and equaled 11.93–20.66 kJ/mol, which indicated the physical nature of the adsorption process. Under static conditions, the sorbents demonstrated a high adsorption capacity with respect to iron, depending on the structure, and could be arranged as AC > SKD-515 > ODM-2F. In SKD-515, iron adsorption occurred in micropores; in AC and ODM-2F, it took place in mesopores. The kinetics of iron extraction showed that the adsorption process was limited by external mass transfer.
The research provided a new understanding of iron adsorption by materials of various structures. The conclusions were supported by scanning electron microscopy images. Initial concentration, flow velocity, and loading layer height were studied in dynamics, i.e., during continuous operation of the adsorption column. The system proved extremely effective and reached 99.0% Fe³⁺ extraction under the following conditions: flow rate = 1 L/min, loading column height = 0.15 m, column diameter = 0.05 m, initial concentration = 0.5 mg/L (5 MPC). The column performance was tested at an initial concentration of iron ions of 50 MPC, which simulated the wastewater treatment at industrial enterprises. This comprehensive study of iron adsorption from wastewater proved the efficiency of the mineral sorption materials with aluminosilicate of AC grade.

Keywords

Resource-oriented region, adsorption, sorbents, activated carbons, iron, wastewater, surface watercourses

FUNDING

The research was part of the comprehensive research and technical program of complete innovative cycle “Development and implementation of technological complexes in mineral exploration and extraction that ensure industrial safety and bioremediation, as well as provide new deep-processed coal products with consecutive amelioration of environmental and life hazards”, Decree No. 1144-r of the Government of the Russian Federation, Dec. 11 , 2022, Contract No. 075-15-2022-1201, Sep. 30, 2022.

REFERENCES

1. Kaljukova EN, Pismenko VT, Ivanskaya NN. Adsorption of manganese and iron cations by natural sorbents. Sorption and Chromatography Processes. 2010;10(2):194–198. (In Russ.). https://elibrary.ru/MUEQSJ
2. Bibanaeva SA, Skachkov VM. Sorption of heavy metals from aqueous solutions with synthetic zeolites. Physical and Chemical Aspects of the Study of Custers, Nanostructures and Nanomaterials. 2023;(15):924–929. (In Russ.). https://doi.org/10.26456/pcascnn/2023.15.924; https://elibrary.ru/SWCQJA
3. Poleshchuk IN, Pinigina IA, Sozykina ES. Extracting ions of iron (III) from aqueous solutions by natural sorbents modified. Modern High Technologies. 2019;(3–2):227–231. (In Russ.). https://elibrary.ru/ZEKOVN
4. Chakraborty R, Asthana A, Singh AK, Jain B, Susan ABH. Adsorption of heavy metal ions by various low-cost adsorbents: A review. International Journal of Environmental Analytical Chemistry. 2020;102(2):342–379. https://doi.org/10.1080/03067319.2020.1722811
5. Kochkarev PV, Koshurnikova MA, Sergeyev AA, Shiryaev VV. Trace elements in the meat and internal organs of the mountain hare (Lepus timidus L., 1758) in the North of the Krasnoyarsk region. Food Processing: Techniques and Technology. 2023;53(2):217–230. (In Russ.). https://doi.org/10.21603/2074-9414-2023-2-2436
6. Kaledin AP, Stepanova MV. Bioaccumulation of trace elements in vegetables grown in various anthropogenic conditions. Foods and Raw Materials. 2023;11(1):10–16. https://doi.org/10.21603/2308-4057-2023-1-551
7. Islam MS, Mustafa RA. Assessment of trace elements in canned fish and health risk appraisal. Foods and Raw Materials. 2023;11(1):43–56. https://doi.org/10.21603/2308-4057-2023-1-554
8. Tarasevich YuI, Goncharuk VV, Polyakov VE, Krysenko DA, Ivanova ZG, Aksenenko EV, et al. Efficient technology for the removal of iron and manganese ions from artesian water using clinoptilolite. Journal of Industrial and Engineering Chemistry. 2012;18(4):1438–1440. https://doi.org/10.1016/j.jiec.2012.02.004
9. Gonchikov VCh, Gubaydulina TA, Kaminskaya OV, Apkarʹyan AS. Filter material for purifying water from iron, manganese, and hydrogen sulfide. Bulletin of the Tomsk Polytechnic University. 2012;320(3):37–40. (In Russ.). https://elibrary.ru/oxjtbn
10. Krasnova TA, Belyaeva EE, Belyaeva OV, Gora NV, Ivanova LA. The use of carbon sorbents to remove manganese from aqueous media. Water Supply and Sanitary Technique. 2022;(7):18–24. (In Russ.). https://doi.org/10.35776/VST.2022.07.03; https://elibrary.ru/OPPBQZ
11. Diaz-Alarcón JA, Alfonso-Pérez MP, Vergara-Gómez I, Díaz-Lagos M, Martínez-Ovalle SA. Removal of iron and manganese in groundwater through magnetotactic bacteria. Journal of Environmental Management. 2019;249:109381. https://doi.org/10.1016/j.jenvman.2019.109381
12. Du X, Yang W, Liu Y, Zhang W, Wang Z, Nie J, et al. Removal of manganese, ferrous and antibiotics from groundwater simultaneously using peroxymonosulfate-assisted in-situ oxidation/coagulation integrated with ceramic membrane process. Separation and Purification Technology. 2020;252:1174921. https://doi.org/10.1016/j.seppur.2020.117492
13. Du X, Liu G, Qu F, Li K, Shao S, Li G, et al. Removal of iron, manganese and ammonia from groundwater using a PAC-MBR system: The anti-pollution ability, microbial population and membrane fouling. Desalination. 2017;403:97–106. https://doi.org/10.1016/j.desal.2016.03.002
14. Yakovleva AA, Nguyen TT. To the question of the barrier qualities of the sands of northern and central Vietnam. Sorption of iron (III) ions. Russian Journal of General Chemistry. 2020;64(2):80–84. (In Russ.). https://doi.org/10.6060/rcj.2020642.12; https://elibrary.ru/PFGXVX
15. Yakovleva AA, Nguyen TT, Nguyen TH. Some kinetic models of the sorption iron (III) ions on the surface of river sand from Vietnam. Modern Technologies and Scientific and Technological Progress. 2020;1(7):97–98. (In Russ.). https://doi.org/10.36629/2686-9896-2020-1-97-98; https://elibrary.ru/AJAQVY
16. Mikhnevich EI, Propolsky DE. Methods of deironing of water, analysis and condition of their use. Land Reclamation. 2017;(2):59–65. (In Russ.). https://elibrary.ru/WIAHJY
17. Poleshchuk IN, Pinigina IA, Sazykina ES. Extracting ions of iron (III) from aqueous solutions by natural sorbents. Modern High Technologies. 2019;(3–1):65–69. (In Russ.). https://elibrary.ru/ZDHTVR
18. Lysenko AV, Molokoedova TA, Sokolova YuV. Sotherms of the sorption of FE2+, FE3+ ions by industrial waste from aqueous solutions. Proceedings of the Southwest State University. Series: Engineering and Technologies. 2023;13(2):235–249. https://doi.org/10.21869/2223-1528-2023-13-2-235-249; https://elibrary.ru/BQFDOQ
19. Krasnova TA, Gora NV, Belyaeva OV, Gorelkina AK, Golubeva NS, Timoshchuk IV. The use of semi-coke for phenol removal from aqueous solutions. Carbon Letters. 2021;31:1023–1032. https://doi.org/10.1007/s42823-020-00216-z
20. Parfitt GD, Rochester CH. Adsorption from solution at the solid/liquid interface. Academic Press; 1983. 416 p.
21. Fedotkin IM, Koganovskiy AM, Roda IG, Marutovskiy RM. Determining the coefficient of external mass transfer and adsorption from solutions. Physical Chemistry. 1994;48(2):473–475. (In Russ.).