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    Fe 2+ Removal from Aqueous Solution Using Expanded Perlite
    (International Journal of New Technology and Research, 2021-07) Ioseliani, D.; Balarjishvili, G.; Kalabegashvili, N.; Samkharadze, L.; Nonikashvili, N.; Mikadze, I.
    Abstract— Adsorption properties of Georgian expanded perlite prepared on the basis of perlite – natural mineral of Georgia in the process of aqueous solution purification from bivalent iron ionswere investigated for the first time in the work. The dependences of adsorption degree and volume capacity on change of solution pH, adsorbent dosage, contact time and adsorbate concentration were studied. Tests were mainly conductedunder dynamic and static conditions. Optimum conditions for Fe2+ adsorption on expanded perlite have been determined. Maximal efficiency of iron adsorption degree was equal to 91%, and volume capacity – 1.82 mg/g. Expanded perlite shows excellent adsorption properties in the process of iron removal from aqueous solution.
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    STADY OF PETROLEUM OF GEORGIAN MTSAREKHEVI DEPOSIT
    (World Science, 2018-05) Uchaneishvili, Teimuraz; Nonikashvili, Nino; Kavtaradze, Nino; Tserodze, Nana; Stephanishvili, Maia
    Physical and chemical operational parameters of petroleum from the Mtsarekhevi deposit on the territory of Georgia was studied. This petroleum belongs to the petroleum of heavy type (ρ4 20-0.9505g/cm3), is characterized by the small exit of petrol and light hydrocarbon fractions, by the low content of general sulfur and low freezing point.Hydrocarbon composition of petroleum fractions was studied by gas-chromatography and mass spectrometry methods. It was established that in isomeric alkanes the content of the mono substituted isomers predominates over the disubstituted isomers. The amount of saturated hydrocarbons - paraffins and cycloalkanes in the total composition was 93 %, and the ratio of isoparaffins and n-paraffins was about 1:3.
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    Impregnation of Iron and Magnetite Phases in Wood and Partial Pyrolized Wood
    (Science and Technology of Polymers and Advanced Materials, Applied Research Methods, 1st Edition, 2019) SARAJISHVILI, K.; JALABADZE, N.; NADARAIA, L.; KVARTSKHAVA, G.; KORKIA, T.; NONIKASHVILI, N.; GABUNIA, V.; CHEDIA, R.
    Nanoiron-containing adsorbents have been widely used for cleaning of waters contaminated with organic and inorganic pollutants. Nanoiron can be spread over an organic and inorganic liner. Using renewable bioresources (timber, agricultural wastes, waste of biotechnological processes, etc.) to obtain sorbents containing nanoiron and iron oxide is quite promising. Iron-containing sorbents were obtained using Alnus incana wood. To avoid the emission of organic components from the wood into water, their partial pyrolysis was carried out with the formation of 1-3 mm coal layer. 13-17% of iron was impregnated in pyrolyzed and non-pyrolyzed samples. Impregnation was performed by 0.2 M FeCL36H2O and 0.2 M Fe(NO)39H2O solutions. Reduction of impregnated in the wood Fe+3 ions to nanoiron was carried out by NaBH4 in an inert atmosphere. By this method, polyfunctional sorbents like Fe/wood and Fe0/C/wood were obtained. Fe3O4/C/Wood type sorbents were obtained by pyrolysis of Fe(NO3)3-wood complexes. The nanoiron was spread on wood linen by passing steam of iron (0) pentacarbonyl at 150–200°. Wood-Fe(CO)5 system fibers composed from spatial grains are formed in an autoclave during heating. Magnetite partially impregnated into 74the wood. The obtained sorbents easily cause degradation of halogenated organic pollutants (1,4-dichlorbenzol and 4-bromanaline) and completely remove Cu+2 ion from model solutions.
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    Copper Ions Adsorption from Aqueous Solution Using Perlite
    (International Journal of New Technology and Research (IJNTR), 2020-07) Ioseliani, D.K.; Balarjishvili, G.I.; Kalabegashvili, N.G.; Samkharadze, L.O.; Nonikashvili, N.U.; Mikadze, I.I.
    There were explored adsorption properties of natural mineral of Georgia– perlite in the treatment process of aqueoussolution of copper. There was studied the dependence of Cu (II) adsorption degree from adsorbent dosage, contact time and solution pH on both initial (not-expanded) and foamed (expanded) perlite. Under optimum conditions (pH = 1.9, contact time 1 h and adsorbent amount 5 g) adsorption capacity and adsorptiondegree of copper were equal to 11,2mg/g and 94%. It is showed that foamed perlite manifests perfect adsorption properties for copper removal from aqueous solution and it can be recommended as a potential adsorbent in the mentioned process.
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    Use of plant raw materials for purifications of industrial waste waters from copper and iron ions
    (International journal of advanced research, 2019-05) Kalabegashvili, N.G.; Balarjishvili, G.I.; Samkharadze, L.O.; Ioseliani, D.K.; Mikadze, I.I.; Tsikarishvili, R.P.
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    Purification of quarry water with heavy metals using plant residues
    (2019) Mikadze, I.I.; Ioseliani, D.K.; Balarjishvili, G.I.; Samkharadze, L.O.; Kalabegashvili, N.G.
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    Purification of waters polluted with heavy Metals using adsorption
    (WORLD SCIENCE, 2018-04) Balarjishvili, G.I.; Kalabegashvili N.G.; Ioseliani, D.K.; Samkharadze, L.O.; Mikadze, I.I.
    Adsorption ability of adsorbents prepared on the basis of Georgian natural zeolites (clinoptilolite, mordenite) and mineral brucite in the process of purification from the heavy metals of modeled (simulated) solution similar to the acidic quarry water of Bolnisi MCM (Bolnisi Mining-Enrichment Combine, Georgia) and Kazretula River water is studied. Dependence of degree of adsorbents’ adsorption on the composition of adsorbent, mutual ratio, mechanoactivation and experiment duration was studied. It was shown that in the mentioned process, adsorbent brucite:mordenite at the ratio of 1:1 is the best adsorbent taking into account practical and economic factors. This adsorbent purified a water of Kazretula River by 100 %, while modeled solution similar to the acidic quarry water were purified from copper by 93% and from iron by 87%.
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    Copper ions adsorption from aqueous solution using perlite
    (International Journal of Ney Technologg and Research, 2020) Ioseliani, D.K.; Balarjishvili, G.I.; Kalabegashvili, N.G.; Samkharadze, L.O.; Nonikashvili, N.U.; Mikadze, I.I.
    There were explored adsorption properties of natural mineral of Georgia– perlite in the treatment process of aqueoussolution of copper. There was studied the dependence of Cu (II) adsorption degree from adsorbent dosage, contact time and solution pH on both initial (not-expanded) and foamed (expanded) perlite. Under optimum conditions (pH = 1.9, contact time 1 h and adsorbent amount 5 g) adsorption capacity and adsorptiondegree of copper were equal to 11,2mg/g and 94%. It is showed that foamed perlite manifests perfect adsorption properties for copper removal from aqueous solution and it can be recommended as a potential adsorbent in the mentioned process.
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    Copper removal from aqueous using natural adsorbents
    (2020-10-06) Ioseliani, Dali K.; Mikadze, Irma I.; Balarjishvili, Gulnara I.; Kalabegashvili, Neli G.; Samkharadze, Lia O.; Nonikashvili, Nino U.