A.V. Dumansky Institute of Colloid and Water Chemistry

Kinetic patterns of charge transfer of Nb(V)/Nb(IV) redox couples in high-temperature chloride-fluoride melts

Людмила СОЛЯНИК

This work investigated the processes of complexation and electroreduction of niobium compounds in chloride and chloride-fluoride melts. Based on electrochemical measurements, it was established that the charge transfer between Nb(V) and Nb(IV) complexes is quasi-reversible and occurs mainly in the diffusion mode. …

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Facile one-pot synthesis of diverse crystalline titanium phosphate ion-exchangers via MW-assisted hydrothermal treatment

T. S. Hubetska, Olena Khaynakova, Belén Cabal, Natalia Kobylinska et autres

Herein, for the first time, the MW-assisted hydrothermal treatment of a titanium precursor in aqueous orthophosphoric acid, precisely controlled by varying conditions, successfully yielded a complete library of crystalline titanium phosphates (TiP), including the α-phase ( α-TiP , Ti(HPO 4 ) 2 …

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Application of an Integrated Ion Exchange/Microfiltration Process for Water Defluoridation

T. Yu. Dulneva, L. A. Deremeshko, A. O. Troianskyi

Abstract High efficiency and key parameters have been established for an integrated water treatment (ion exchange/microfiltration) process for the removal of F– ions by using a finely disperse fraction (≤0.063 mm) of fluoride-selective resin Hydrolite ZG F 860 and a tubular microfiltration …

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Filtration Characteristics of Pressure-Driven Membrane Processes for the Purification of Aeration Station Sludge Leachates from Heavy Metals

L. Yu. Yurlova, I. Yu. Romaniukina, В. О. Овсянкіна

Abstract The development of efficient pressure-driven membrane systems for the purification of contaminated waters from mixtures of heavy metals (HMs) is still a relevant scientific challenge due to the increasing volumes of industrial and municipal wastewaters, the limited efficiency of conventional methods …

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Peculiarities of Adaptation Processes in Test Organisms during the Biotesting of Aquatic Environments (a Review)

V. F. Kovalenko, A. V. Naniieva, T. K. Kyrylenko, A. M. Sova

Abstract The main components of adaptive-compensatory processes in aquatic test organisms during the quality biotesting of an aquatic environment are considered. It is shown that adaptation is a set of physiological and biochemical responses in aquatic organisms that underlie the adaptation of …

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Composite suspension based on pyrolysis products

V.V. Zinin, O.V. Shkutkova, I.V. Kornienko, A.S. Makarov et autres

The development of composite suspension fuels based on secondary energy carriers represents a promising research direction. The use of liquid products derived from the pyrolysis of automobile tires or thermoplastics enables the incorporation of high-ash coal beneficiation sludges and other low-calorific solid …

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Editorial for a New Section: Interfacial Properties

V.I. Kovalchuk, E.V. Aksenenko

From a physical point of view, interfaces are not simply borders between two contacting continuous phases, but material objects with specific properties [...]

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Application of “Green” Reagents for Water Disinfection from Escherichia coli

М. Н. Сапрыкина, L. O. Melnyk, O.S. Bolgova

Abstract The formation of disinfection byproducts hazardous to human health in the process of treatment with chlorine-containing reagents and ozone and the existing risks of converting microorganisms into a viable, but uncultivable state, in which they are able to sustain high doses …

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Modeling the Effect of L-Arginine on the Electrochemical Reduction of Oxygen in Physiological Solution

V. V. Solovyov, T.Yu. Kuznetsova, S.V. Stryzhak, N. V. Solovyova et autres

Abstract Arginine (L-arginine) is a conditionally essential amino acid that plays a crucial role in the body’s biochemical and physiological processes. It lowers malondialdehyde levels, a marker of lipid peroxidation, and promotes the activation of superoxide dismutase, an enzyme that protects cell …

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Thermorheopexy and structural stability of carbonaceous suspensions based on pyrocarbon

V.V. Zinin, Yu.V. Polishchuk, O.V. Shkutkova

The thermo-rheological behavior of composite suspension fuels based on pyrocarbon obtained by low-temperature pyrolysis of waste automobile tires was investigated. Pyrocarbon is characterized by a specific nanoglobular structure and high hydrophobicity, which distinguishes it from traditional fossil coal. Using scanning electron microscopy …

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Silver nanoparticles obtained using cyclodextrin derivatives and pectin as a key component of titanium dioxide-based composites for water purification

Serhii Kobylinskyi, L.V. Kobrina, Sergiy Polishchuk, Natalia Ewa Kobylinska et autres

This study investigated the effect of β-cyclodextrin (β-CD), its derivatives, and pectin on reducing Ag + ions for the synthesis of silver nanoparticles (AgNPs) and corresponding composites with TiO 2 ( TiO 2 /Ag ), which were evaluated as high-performance photocatalysts for …

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Bubble surface mobility regimes in mixed aqueous solutions of short chain alcohols and fluorosurfactant

Pavlína Basařová, Vladislav Shirokov, Artur Sergunin, Nina M. Kovalchuk et autres

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