Sorption properties of AG-3 activated carbon in relation to oil products

Adsorption of oil products from water on AG-3 activated carbon was studied. The adsorption isotherm was constructed and the quantitative characteristics of the sorption process on carbon were determined.

     

Extraction of heavy metals from galvanic sludges

Extraction of copper, nickel, zinc, and chromium from galvanic sludges by various complexons (pyrocatechol, phenanthroline, disodium ethylendiaminetetraacetate, and nitrilotrimethylenephosphonic acid) was considered.     

Formation of Multiwall Carbon Nanotubes on Cylindrical Substrates in Synthesis by Metal-Organic Chemical Vapor Deposition

Processes of deposition of multiwall carbon nanotubes in the synthesis by metal-organic chemical vapor deposition on hollow cylindrical substrates and the effect of the substrate area on the yield of the target product were studied. Making larger the tubular deposition reactor and the area of the cylindrical substrate enabled a substantial increase in the yield of carbon nanotubes. The technological synthesis parameters of the carbon material were optimized. Methods were developed for purification of carbon nanotubes by annealing in air, and materials were obtained with purity of no less than 98%. Physicochemical analysis methods were used to examine the structure and properties of the materials.     

Dissolution of copper in the presence of ortho-quinones with electron-acceptor substituents

Dissolution of copper in organic media in the presence of complexons, whose role is played by spatially hindered ortho-quinones with electron-acceptor substituents and acetylacetone, is considered.     

Sorption properties of natural sorbent silica clay in relation to nickel cations

Sorption of nickel cations on natural sorbent silica clay was studied. The sorption isotherms were constructed and the quantitative characteristics of the process of sorption on a sorbent were determined.     

Oxidation of metallic copper with complexones in organic media

Direct oxidation of copper in organic media with complexones (sterically hindered o-quinones; acetylacetone and pyridine as stabilizing ligands) was studied. From the complexes obtained, the initial components can be regenerated.     

Adsorption of heavy metal ions on galvanic sludges and disposal of the sludges in soil

The sorption capacity of ferritized galvanic sludge toward nickel(II), zinc(II), and copper(II) ions was studied. Sorption isotherms were plotted, and quantitative characteristics of adsorption were determined. Ferritized sludges are stable in the natural environment and thus can be disposed of in soil in an environmentally friendly way.