Viktor GevodUkrainian State University of Science and Technology. Educational and scientific institute "Ukrainian State University of Chemical Technology"
Viktor Gevod
Professor
About
45
Publications
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Introduction
Scientific and practical interests: fundamental aspects of surface chemistry, creation of environmentally friendly water purification systems in the face of increasing urbanization. Design of innovative water purification devices with optimal life cycle.
Associate Member of IWA, participator of the IWA teams of specialists in the areas of "Biofilms" and "Small Water and Wastewater Systems".
Participant of 2 projects to develop the potential of higher education.
Education
September 1966 - June 1971
Ukrainian State University of Chemical Technology
Field of study
Publications
Publications (45)
Abstract: A pilot sample of an economic denitrifying water purifier Point of use is designed and time-tested. The apparatus comprises denitrifying biofilter, a submersible type, and a bubble-film extractor for polishing of filtrate. Inside the biofilter, the water treatment does by coordinated functioning of denitrifying, sulfate-reducing, and sulf...
The equilibrium states and kinetics of changes in the concentrations of carbonate system components in water with different calcium hardness are analyzed and the possibility of reducing this indicator by an environmentally friendly method - aeration - is evaluated. Changes in the concentrations of dissolved carbon dioxide, calcium ions, hydrogen io...
The influence of bacterial nutrition (by ethanol) on the appearance of hydrogen sulfide and colloidal sulfur in the filtrate of innovative U-shaped small-sized (point-of-use) submersible denitrifying biofilter describes in the course of its regular operation. The device intends to get drinking water from groundwater sources contaminated with nitrat...
The process of getting clarified denitrified water in a biofilter used combined methods of displacement (piston) biofiltration and bubble-film extraction is studied. It is shown the products of bacterial metabolism released into the water at biofiltration have surfactant properties. They can serve as collectors of the dispersed phase to achieve the...
Copper ferrite has been synthesized by modified co-precipitation method. A comparative analysis of the pH-static and pH-dynamic modes of ferrite copper production has been carried out. The kinetics of the processes has been investigated. The use of plasma technology for the production of copper ferrites is shown. It was found that the use of the pH...
The high content of nitrates in drinking water leads to serious diseases. The creation of biofiltering devices with the longest time of their operation between preventive flushes is extremely important. The purpose of this study was to study the features of the functioning of the developed U-shaped submersible denitrifying biofilter during its long...
The role of air-water and water-solid matter interfaces at the processes of the none-reagent softerning of the hard hydrocarbonate water.
This work was aimed creating a simple and reliable submersed biofilter for the decentralized treatment of nitrate-contaminated water. Denitrification of water was studied by the method of displacement (piston) bio-filtration in specially designed devices intended for home application. At certain sizes of grains of bio-filtration bed and filtration...
This work was aimed at creating a simple and reliable submersed biofilter for the decentralized treatment of nitrate-contaminated water. Denitrification of water was performed by the method of displacement (piston) biofiltration in specially designed U-shaped devices intended for residential use. The efficiency of biofiltration in these devices was...
Денітрифікація питної води досліджена методами прямотокової і витіснювальної біофільтрації в спеціально розроблених малогабаритних фільтруючих пристроях, призначених для систем децентралізованої водопідготовки. Показано, що заміна прямотокового режиму біофільтраційної денітрифікації на витіснювальний має суттєві переваги. Зникає необхідність викори...
Bubble-film extraction as an improved form of bubbling flotation allows to reduce the concentration of surface-active impurities in water to the level of tenths of a milligram per liter. The use of a polydisperse stream of air bubbles during bubble-film extraction significantly accelerates the process of water purification, when the proportion of l...
Bubble-films extraction (upgraded bubble flotation) is one of the modern methods for purifying contaminated water from surface-active impurities. The features of this method have considered from the standpoints of the equilibrium and dynamics of surfactants accumulation on floated air bubbles with different sizes. Within a certain ratio of dimensio...
It is reported the impact of biofilms on the quality of tap water inside of water networks. The analysis covers the factors determining the occurrence and growth of biofilms on the inner surface of water pipes. The composition of biofilms upon the age and their influence on the degree of bio-contamination of tap water at the consumption points are...
У підручнику викладено теоретичні основи хімії та технології води. Охарактеризовано властивості природних вод і їхніх домішок з позицій сучасних уявлень хімії води, хімії розчинів та колоїдної хімії. Надано опис методів, які забезпечують видалення з води домішок, що характеризуються різною мірою дисперсності.
Для студентів вищих навчальних закладів...
Mono- and di- esters of adipinic acid with long chain ethoxylated aliphatic alcohols (mixture of C10 - C12 and C16 - C18 alkohols) were obtained by the reaction of Synthanol DS-10 and adipinic acid and its dichloroanhydride. If adipinic acid with p-toluenesulfonic acid as catalyst were used as acylating agent and the mole ratio of Synthanol DS-10 t...
The main reasons for the deterioration of the quality of drinking water inside water pipelines are revealed. Considered are modern methods and technical devices for post-treatment of tap water in places of its consumption (Point of entry, Point of use) and a detailed description of a new, environmentally friendly method and appropriate devices for...
This new edition of the Handbook of Surface and Colloid Chemistry informs you of significant recent developments in the field. It highlights new applications and provides revised insight on surface and colloid chemistry's growing role in industrial innovations. The contributors to each chapter are internationally recognized experts.
The Handbook of...
Учебное пособие предназначено для студентов, изучающих курс "Химия и технология воды". Водоочистка на коммунальных и промышленных предприятиях. Будет полезна для специалистов и ученых работающих в области очистки воды. 242 с. : рис., табл. - Библиография: с. 237-242.
Monoesters of phthalic acid and ethoxylated alcohols aresynthesized by the acylation of the ethoxylated aliphatic alcohols C12- C14 with phthalic anhydride. The kinetic parameters of thisreaction are established. The reaction has the first order by ethoxy-lated alcohols and phthalic anhydride. The rate constant of thereaction is (3.7±0.25)⋅10 3 min...
The surface charge density of lipid monolayers is the function of the ion‑
ization degree of their molecules. In the case of monolayers formed from
fatty acids, the surface charge density increases on alkaline subphases
and decreases on acidic subphases. In fatty amine monolayers, the surface
charge density has the opposite sign and reaches maximum...
Amphiphilic monolayers are known as the useful models for study mechanisms of different biophysical and biochemical phenomena in living cells. The main attention will be devoted to evaluation of monolayer surface pressure. To analyze the dependence of the electrostatic component of surface pressure upon the kind of monolayer substance, ionic compos...
The article compares the efficiency of functioning of various filtering systems in relation to sorbed and biooxidized contaminants. It has been theoretically and experimentally shown that bioconversion of water pollution on gravity filter media is an effective tool for water purification. The bioconversion stage of water purification is implemented...
Water is one of the indispensable needs for all living beings. It is also our basic constituent. The human body consists of water about 60% and requires at least 3 L of water daily. But this requirement is not always satisfied properly due to various reasons.
Chapter 14 is presented:
https://www.academia.edu/37255205/Handbook_of_Surface_and_Colloid...
The main sources of drinking water are often polluted by industrial and municipal chemicals. Water treatment plants reduce the concentrations of harmful chemicals in water to a safe level and mandatory disinfection renders water non-hazardous from a bacteriological standpoint. However, conventional water treatment technologies using chlorine result...
Монография посвящена решению вопросов, обусловленных присутствием ПАВ в водных средах: определению эффективных концентраций ПАВ в воде, их удалению из питьевой воды с другими примесями. Обращено внимание на причины вторичного загрязнения питьевой воды в водопроводах крупных городов. Оценены масштабы проблемы. Рассмотрены возможности инновационного...
The surface activity of angiotensin-2 was studied using the method of dynamical capacitor and Wilgelmi. Angiotensin was shown to possess the surface activity, forming well regulated insoluble monolayers of liquid-gas interfaces with peptide adsorption of 3.7 x 10(-6) M/sm2 and area of 0.45 nm2 per one molecule. It is assumed that due to these prope...
The studies of lipid monolayers showed the interaction of an angiotensin-2 and lipid monolayers to be a two-stage process. In the first stage peptide molecules were adsorbed due to electrical interaction in the plane of polar heads of lipid molecules. In the second stage peptide molecules incorporated into the lipid matrix owing to hydrophobic inte...
The studies of lipid monolayers showed the interaction of an angiotensin-2 and lipid monolayers to be a two-stage process. In the first stage peptide molecules were adsorbed due to electrical interaction in the plane of polar heads of lipid molecules. In the second stage peptide molecules incorporated into the lipid matrix owing to hydrophobic inte...
The isochores of the boundary potential and surface pressure were studied in monolayers from stearic acid and its derivatives on the subphases with different pH and ionic strength. The results suggest that the decrease of the dipole part of the boundary jump of the potential occurs in condensed monolayers from stearic acid within the pH range of 8-...
The interaction between the anionic and cationic surfactants with Melittin spread monolayers at the air-water interface was investigated. The addition of anionic Cl−, under the films of Melittin gives rise to a change in both surface pressure and surface potential. These interactions are different when surfactants are present, due to specific inter...
Melittin is a major (approximately 50%) protein component of bee venom. This peptide is an amphiphilic protein, because, while the amino acid residues 1-20 are predominantly hydrophobic (with the exception of Lys-7), residues 21-26 are hydrophilic. The binding properties to vesicles and lipid bilayers of melittin have provided much useful informati...
The spread monolayers of proteins at the air-water interface have been reported to be very useful model membrane systems. The charged protein monolayers have been analyzed by using the Gouy-Chapman (-Stern) models. These models gave satisfactory analyses of non-membrane proteins, but could not be used for the data of charged melittin monolayers (me...
Plasma membranes of rabbit intestinal smooth muscle cells manifest low surface activity on the boundary of the electrolyte-air phases. This activity undergoes essential changes if the electrolyte surface is covered with the lecithin monolayer. According to the experimental data, the interaction of plasma membranes with the lecithin monolayers is hy...
Предложен механизм гидролиза структурированных липидов, катализируемый фосфолипазой А2 яда кобры. Существенной его особенностью является участие в элементарном акте формы димеризованного фермента. Обсуждается роль «шагового движения» в функционировании димера в отношении обеспечения высокой скорости гидролиза. Было обнаружено, что ионы Ca2 + уменьш...
Surface activity of cardiotoxin from the venom of cobra Naia naja oxiana and an acetylated analog of the cardiotoxin was investigated on the water-air interface. The interaction of these substances with lipid monolayers and bimolecular membrane was also studied. It was shown that on the water-air interface cardiotoxin can form two different types o...
Surface activity of cardiotoxin from the venom of cobra Naia naja oxiana and an acetylated analog of the cardiotoxin was investigated on the water-air interface. The interaction of these substances with lipid monolayers and bimolecular membrane was also studied. It was shown that on the water-air interface cardiotoxin can form two different types o...
Cytochrome c when adsorbed on bilayer phospholipid membrane (BLM) induced an adsorption potential of the order of 50 mv which relaxes gradually. The value and the sign of the adsorption potential depend upon the initial polarisation of the membrane. On the positively charged surface of the membrane (polarisation above 120 mv) the orientation of ads...