Utilization of ash and slag waste as sorption materials for desalination of reverse osmosis concentrate TES
https://doi.org/10.30724/1998-9903-2026-28-3-207-218
Abstract
PURPOSE The study focuses on evaluating the feasibility of using a granular sorbent material derived from ash‑slag waste to remove sulfate and chloride ions from reverse osmosis concentrate – a highly mineralized effluent produced by thermal power plants.
GOAL. Reducing the environmental impact of thermal power plants through the application of an advanced purification technology for reverse osmosis concentrate, using materials derived from energy sector waste.
METHODS. The technological characteristics of ash‑and‑slag waste were determined using GOST‑standardized methods. The physico‑chemical parameters of water quality were analyzed in accordance with in‑house environmental monitoring protocols, including chromatographic, gravimetric, titrimetric, and photocolorimetric techniques.
RESULTS We have performed calculations of the economic effect and prevented environmental harm associated with the deployment of an enhanced treatment process. The technology uses granular sorbent media to remove sulfate and chloride ions from reverse osmosis concentrate generated by thermal power plants.
CONCLUSION. Based on ash‑and‑slag waste, a granular sorbent material was synthesized to treat reverse osmosis concentrate by removing sulfate and chloride ions.
Keywords
ash and slag waste from thermal power plants,
reverse osmotic TPP concentrate,
sulfate ions,
chloride ions,
adsorption,
sorption material
Supporting agencies: The work was carried out at the expense of a grant provided in 2025 by the Science and Technology Foundation of the Republic of Tatarstan for the implementation of fundamental and applied scientific research in scientific and educational organizations, enterprises, and organizations of the real sector of the economy of the Republic of Tatarstan".
About the Authors
Larisa A. Nikolaeva
Kazan State Power Engineering University
Russian Federation
Russian Federation
Kazan
Eleonora R. Zainullina
Kazan State Power Engineering University
Russian Federation
Russian Federation
Kazan
Gulshat G. Safina
Kazan State Power Engineering University
Russian Federation
Russian Federation
Kazan
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Review
For citations:
Nikolaeva L.A., Zainullina E.R., Safina G.G. Utilization of ash and slag waste as sorption materials for desalination of reverse osmosis concentrate TES. Power engineering: research, equipment, technology. 2026;28(3):207-218. (In Russ.) https://doi.org/10.30724/1998-9903-2026-28-3-207-218
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