Tomas Vengris

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The equilibrium isotherm data obtained by the sorption of tartrate, citrate, and EDTA onto chitosan were analyzed using Langmuir and Freundlich equations. The process fits best the Langmuir equation. Kinetic investigations showed that the sorption process obeys the pseudo-second-order kinetic equation. Sorption and desorption peculiarities, FTIR(More)
Decontamination of solutions containing Cu(II) complexes with tartrate, glycine and quadrol (N,N,N'N'-tetrakis(2-hydroxypropyl)ethylenediamine) using metallic iron depends on pH and proceeds best in mildly acidic solutions. Cu(II) is completely removed from all solutions containing the ligands investigated. The degree of ligand removal from solutions(More)
To decontaminate spent offset-printing developer Polychrome 4003, several microorganisms were separated from the soil that has been used for developer dumping for 3 years. Two organism cultures were isolated and identified to genus Geomyces pannorum and Bacteria spp. These organisms, as well as commercial Septic Gobbler (SG) bacteria, were used to(More)
EDTA removal from solutions using metallic iron was carried out at different values of pH, iron load and concentrations at free access of air and in closed vessels. The EDTA destruction was investigated using chemical and capillary electrophoresis analysis. Fe corrosion was studied voltammetrically and the composition of the precipitate formed was(More)
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