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Modified nanostructured sorbents are widely used in water treatment processes. In this work, aluminum and iron particles prepared by electro-spark dispersion have been applied as modifiers. Zeolite samples from "Holinskoe" mineral deposit (Russia, Republic of Buryatia), with a size smaller than 0.1 mm, have been modified with aluminum and iron particles, using a sol-gel process. The properties of the modified materials have been determined by means of sorption test, when removing ions Pb{2+}, Fe{3+} and Cd{2+} from the model solutions in static conditions. Using the method of thermal desorption of nitrogen (BET) it has been shown that increasing the iron content in the samples of nanostructured modified sorbents does not affect the increase in specific surface area and pore volume of the samples. Ions concentrations have been analyzed by stripping voltammetry and photocolorimetry. As a result, modified sorbents revealed a high efficiency sorption of heavy metals

The morphological and structural characteristics of nanoscale silver particles obtained by the method of electric spark dispersion of metal granules in the liquid aprotic medium were obtained using atomic force microscopy, transmission electron microscopy, and dynamic light scattering spectroscopy. The specific surface, morphology, structure and the distribution by size of the particles are presented.

The paper presents the results of investigations of genotoxicity and morphological characteristics of nanoscale gold particles prepared by the electric spark dispersion method in a water medium. To investigate the properties we used comet assay, transmission electron microscopy, thermal desorption of nitrogen (BET). It was revealed, gold particles did not cause DNA damage at low concentrations (0.01 - 0.1 mg/ml) and detectable level of genotoxicity of gold nanoparticles is observed at concentrations of 0.3 mg/ml and above.

The work presents the study of the properties of nanopowders produced bythe electric explosion of wire (EEW) in the atmosphere of Ar, CO, CO2, N2. It was established that with the increase of theelectric strength of a gas the wire acquires more energy, enabling the reduction of a particle average size. The EEW in gaseous media that have high dissociation energy (N2 and CO) produces metal powders that consist of crystalline α-Fe и γ-Fe. EEW products obtained in СО2 consist of α-Fe and bivalent iron oxide.