: 145-150
Lviv Polytechnic National University
Lviv Polytechnic National University

The results of the study of the adsorption capacity of a number of sorbents of natural and synthetic origin with respect to iron ions have been clustered. The sorption capacity of the following sorbents was studied: natural zeolite of the Sokyrnytsia deposit, synthetic sorbent based on the ash of Doborotvir heat power plant, Al2O3, SiO2, as well as some types of soils: sandy soil, black soil and clay. Equations describing the regularities of adsorption processes depending on the type of sorbent are obtained. According to the obtained dendrograms of the adsorption process, two main clusters of sorbents were identified. The statistical parameters of the process and the significance of the obtained results are calculated. The coefficient of determination of experimental data was 0.87 0.99, the standard deviation was 0.0170.026.

1. Lin S., Man Y. B., Chow K. L., Zheng C., Wong M. H. (2020). Impacts of the influx of e-waste into Hong Kong after China has tightened up entry regulations. Critical Reviews in Environmental Science and Technology, 50(2), 105-134.
2. Deng H., Wei R., Luo W., Hu L., Li B., Shi H. (2020). Microplastic pollution in water and sediment in a textile industrial area. Environmental Pollution, 258, 113658.
3. Ramesh, V., George, J. (2020). Carbon and Nutrient Sequestration Potential of Coal-Based Fly Ash Zeolites. In Circular Economy and Fly Ash Management (pp. 47-55). Springer, Singapore.
4. Coignet P. A., Kratzer D. W., Kulkarni S. S., Sanders Jr. E. S. (2020). U.S. Patent No. 10,525,400. Washington, DC: U.S. Patent and Trademark Office.
5. Zeng X., Xu Y., Zhang B., Luo G., Sun P., Zou R., Yao H. (2017). Elemental mercury adsorption and regeneration performance of sorbents FeMnOx enhanced via non-thermal plasma. Chemical Engineering Journal, 309, 503-512.
6. Akpomie K. G., Onyeabor C. F., Ezeofor C. C., Ani J. U., Eze S. I. (2019). Natural aluminosilicate clay obtained from South-Eastern Nigeria as potential sorbent for oil spill remediation. Journal of African Earth Sciences, 155, 118-123.
7. Zagklis D. P., Paraskeva C. A. (2020). Preliminary design of a phenols purification plant. Journal of Chemical Technology & Biotechnology, 95(2), 373-383.
8. Sabadash V., Gumnitsky J., Hyvlyud A. (2016) Mechanism of phosphates sorption by zeolites depending on degree of their substitution for potassium ions. Chemistry & Chemical Technology; 10.2: 235-240.
9. Kalvachev Y., Zgureva D., Boycheva S., Barbov B., Petrova N. (2016). Synthesis of carbon dioxide adsorbents by zeolitization of fly ash. Journal of Thermal Analysis and Calorimetry, 124(1), 101-106.
10. Lazarova K., Boycheva S., Vasileva M., Zgureva D., Georgieva B., Babeva T. (2019, March). Zeolites from fly ash embedded in a thin niobium oxide matrix for optical and sensing applications. In Journal of Physics: Conference Series (Vol. 1186, No. 1, p. 012024). IOP Publishing.
11. Karanac M., Đolić M., Veličković Z., Kapidžić A., Ivanovski V., Mitrić M., Marinković A. (2018). Efficient multistep arsenate removal onto magnetite modified fly ash. Journal of environmental management, 224, 263-276.
12. Rentsenorov, U., Davaabal, B., & Temuujin, J. (2018). Synthesis of Zeolite A from Mongolian Coal Fly Ash by Hydrothermal Treatment. In Solid State Phenomena (Vol. 271, pp. 1-8). Trans Tech Publications Ltd.
13. Lee Y. R., Soe J. T., Zhang S., Ahn J. W., Park M. B., Ahn W. S. (2017). Synthesis of nanoporous materials via recycling coal fly ash and other solid wastes: A mini review. Chemical Engineering Journal, 317, 821-843.