SORPTION TREATMENT OF GALVANIC PRODUCTION WASTEWATER FROM METALS BY NATURAL ZEOLITES
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
KNITU im. A.N. Tupoleva-KAI:
2.
KNITU im. A.N. Tupoleva-KAI
3.
Institut problem ekologii i nedropol'zovaniya AN RT
4.
KNITU
Type:
Article
Pages:
from 62
to 67
Status:
Published
Received:
22.12.2025
Accepted:
23.12.2025
Published:
23.12.2025
Language:
Russian
Keywords:
WASTEWATER, METALS, ZEOLITE-CONTAINING ROCK, SORPTION CAPACITY, REGENERATION
Abstract (English):
The results of modern domestic and foreign studies show the advantages of using adsorption methods for the purification of wastewater from metal ions using natural sorption and ion exchange materials The zeolite-containing rock of the Tatar-Shatrasan deposit was studied to remove metal ions from galvanic wastewater of various dispersions: the first sample with fraction sizes of 0.2-0.8 mm, the second sample with fraction sizes of 0.8-2.5 mm. The model solution was prepared on the basis of a mixture of metal salts typical of electroplating effluents (iron Fe(III), chromium Cr(III), zinc Zn(II), copper Cu(II), cadmium Cd(II), nickel Ni(II)). The values of the adsorption capacity with respect to the analyzed metal ions were established. The efficiency of metal ion extraction was evaluated and it was found that the use of this zeolite-containing rock is most effective in water purification of copper and zinc ions and does not depend on the dispersion of the samples. The second sample also retains a high degree of adsorption for nickel and chromium ions. The lowest values of the adsorption capacity and the degree of extraction were recorded for iron ions and do not depend on the dispersion of the samples. The degree of recovery after regeneration of the used samples of this rock was assessed. In order to determine the quality of the regenerated samples, the experiment with the model solution was continued. The degree of recovery of the adsorption capacity of the spent samples of the zeolite-containing rock of the Tatar-Shatrashan deposit after regeneration with respect to all analyzed metal ions was estimated.
The results of modern domestic and foreign studies show the advantages of using adsorption methods for the purification of wastewater from metal ions using natural sorption and ion exchange materials The zeolite-containing rock of the Tatar-Shatrasan deposit was studied to remove metal ions from galvanic wastewater of various dispersions: the first sample with fraction sizes of 0.2-0.8 mm, the second sample with fraction sizes of 0.8-2.5 mm. The model solution was prepared on the basis of a mixture of metal salts typical of electroplating effluents (iron Fe(III), chromium Cr(III), zinc Zn(II), copper Cu(II), cadmium Cd(II), nickel Ni(II)). The values of the adsorption capacity with respect to the analyzed metal ions were established. The efficiency of metal ion extraction was evaluated and it was found that the use of this zeolite-containing rock is most effective in water purification of copper and zinc ions and does not depend on the dispersion of the samples. The second sample also retains a high degree of adsorption for nickel and chromium ions. The lowest values of the adsorption capacity and the degree of extraction were recorded for iron ions and do not depend on the dispersion of the samples. The degree of recovery after regeneration of the used samples of this rock was assessed. In order to determine the quality of the regenerated samples, the experiment with the model solution was continued. The degree of recovery of the adsorption capacity of the spent samples of the zeolite-containing rock of the Tatar-Shatrashan deposit after regeneration with respect to all analyzed metal ions was estimated.
Keywords:
WASTEWATER, METALS, ZEOLITE-CONTAINING ROCK, SORPTION CAPACITY, REGENERATION
WASTEWATER, METALS, ZEOLITE-CONTAINING ROCK, SORPTION CAPACITY, REGENERATION
