CHEMICAL TRANSFORMATIONS OF DUST OF BAG FILTERS OF THE REINFORCED CONCRETE PLANT IN AQUEOUS SOLUTIONS
Abstract
Nickel and copper compounds are among the most dangerous environmental pollutants and their removal from wastewater is an important task. To extract them from aqueous media, traditional methods are used, such as ion exchange, reagent purification, membrane filtration, and adsorption. Recently, for the purification of aqueous media from heavy metal ions, it is increasingly proposed to use waste from various industries, for example, slag, sludge, ash, dust, etc. The paper considered the possibility of wastewater treatment from Cu2+ and Ni2+ ions using dust from bag filters in the production of reinforced concrete products as reagents. It was determined that bag filter dust has a fine structure and contains a significant amount of silicates of various compositions. The paper describes the chemical transformations that occur in the aquatic media when dust from the bag filters of the reinforced concrete plant is added to it. Some reagents, coagulants, sorption materials that can be used to purify wastewater from heavy metal ions are given. The values of the solubility products of the formed compounds - copper hydroxide, nickel hydroxide, hydroxomeric carbonate are indicated. The results of granulometric, X-ray phase and chemical analyzes of bag filter dust are presented. According to the studies, the efficiency of purification of the model solution from heavy metal ions in this case is at least 99.3%.
For citation:
Belovodsky E.A., Sverguzova S.V., Shaikhiev I.G., Voronina Yu.S., Ievleva E.S. Chemical transformations of dust of bag filters of the reinforced concrete plant in aqueous solutions. ChemChemTech [Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.]. 2022. V. 65. N 9. P. 121-128. DOI: 10.6060/ivkkt.20226509.6638.
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