STUDYING THE PROCESS OF SORPTION OF MOLYBDENUM AND COPPER FROM MINING INDUSTRY WASTEWATER

Abstract

Intensive mining of minerals leads to the generation of large volumes of waste from ore processing. Mining waste can be a source of mineral components. These wastes contain a large amount of various metals (copper(II), iron(II,III), molybdenum(VI), zinc(II), nickel(II)) and other ions.

Heavy metal ions often accumulate in industrial wastewater, and their discharge into the environment can lead to hazardous situations. Among many problems, a key issue is the immediate resolution of pollution caused by heavy metals in the biosphere. The choice of wastewater treatment method for metal ions in various industries depends on the degree of contamination, the volume of wastewater, the nature of the production process, the required level of treatment, and other factors. The reagent-based method of treatment has become the most widespread, especially in cases of low metal concentrations.

The study of the sorption patterns of glauconite was carried out with model aqueous solutions corresponding to different concentrations of Cu(II), Mo(VI) ions present in flotation waters under static mixing conditions in an environment with pH≈10. The change in the content of each ion in the solution-sorbent system was determined depending on the contact time. From the analysis of the experimental results, it was observed that the maximum degree of recovery was observed after 60 minutes, and in the case of Cu(II) it was 99.0%, and in the case of Mo(VI) - 75.0%. To determine the nature of glauconite sorption, sorption isotherms were obtained. The limiting capacity of the sorbent for individual ions was determined.

Based on the environmental technological benefit factor, the sorption properties of glauconite (green clay) located in the Garni area of Republic of Armenia and the possibility of its application in the process of metal removal of flotation effluents generated after the development of the Kajaran copper-molybdenum ore are studied.