heavy metals

THE METHODOLOGY FOR DESIGN OF INFORMATIONAL AND ANALYTICAL SYSTEM FOR ENVIRONMENTAL MONITORING OF MINING AND CHEMICAL ENTERPRISE IN THE LIQUIDATION

The impact of the mining and chemical enterprise on the state of pollution of the environment was assessed in the paper. The need to design an informational and analytical system for monitoring the territory of Rozdil state mining and chemical enterprise (SMCE) “Sirka” at the stage of the liquidation was proved. It was established that it is necessary to create an informational and analytical system of environmental monitoring, which will increase the ecological safety of the territory of the enterprise and the surrounding settlements.

Concurrent Sorption of Copper and Chromium Cations by Natural Zeolite

The aim of this work was to study the process of adsorption of Copper and Chromium cations by natural zeolites in static conditions. The change of the chemical composition of the surface of the zeolite as a result of sorption of heavy metals was investigated. The influence of the type of the ions and pH selectivity in absorption of heavy metals removal by zeolite was analysed. The reasons for the selective extraction of Copper from two-component solution were explained.

Development of low waste technology of water purification from copper ions

The results of the water stabilization treatment studies to feed the cooling water circulation systems by ion exchange method are reported. The processes of the water softener on strongly and weakly acidic cation resins in the presence of copper ions are studied. The relation of the water purification efficiency from copper and its softening depending on the form of the ion-exchanger and water consumption was determined.

Stripping voltamperometric determination of heavy metals in honey samples

The content of zinc, cadmium, lead, and copper in honey varieties was determined by the method of stripping voltammetry. Samples preparing was made by three different methods: dry and hydro ashing, as well by “hydro” mineralization and dry ashing. It was found that all methods of samples preparing can be used for destroying honey matrix, but the combined method of samples preparing is the most efficient one for ions of heavy metals extracting and provides accuracy of the definition.

Adsorption of Heavy Metals Ions from Liquid Media by Palygorskite

The process of heavy metals adsorption by natural mineral palygorskite from wastewater and food (apple juice) has been investigated. The purification processes of copper, cadmium, lead, mercury and zinc have been studied. The rational technological parameters of these processes have been determined. The mechanism for heavy metals adsorbtion from juice by palygorskite has been defined.