Browsing by Author "Petrushka, Kateryna"

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Comparison of the methods of surface runoff modelling from the urbanized subcatchments for estimation of peak loads on the environment
(Видавництво Львівської політехніки, 2020-02-10) Mysak, Ihor; Zhuk, Volodymyr; Petrushka, Kateryna; Lviv Polytechnic National University
Stormwater hydrographs from the typical urban impervious subcatchments are analyzed theoretically using the nonlinear reservoir method and the sector method. The peak flow rates of hydrographs from the impervious rectangular subcatchments are 0.774 times less using the nonlinear reservoir method comparing the sector method for all investigated input parameters.
Danger pollution of the hydrosphere ammonium salts
(Lviv Polytechnic Publishing House, 2016) Malovanyy, Myroslav; Petrushka, Kateryna; Lviv Polytechnic National University
The paper is devoted to the danger pollution of the hydrosphere ammonium salts. We described the basic conditions under which the research was conducted. The methods used and experimental results are presented too.
Determination of electrical conductivity of ion exchange resins
(Lviv Polytechnic Publishing House, 2015) Malovanyy, Myroslav; Petrushka, Kateryna; Lviv Polytechnic National University
The paper is devoted to the determination of electrical conductivity of the ion exchange resins. We described the basic conditions under which the research was conducted. The methods used and experimental results are presented too.
Environmentally safe reclamation of solid waste landfills
(Видавництво Львівської політехніки, 2023-02-28) Grechanik, Ruslan; Malovanyy, Myroslav; Korbut, Mariia; Petrushka, Kateryna; Luchyt, Liubov; Boyko, Ruslan; Synelnikov, Serhiy; Bordun, Ihor; Ministry of Environmental Protection and Natural Resources of Ukraine; Lviv Polytechnic National University; Zhytomyr Polytechnic State University; Armed Forces of Ukraine; Czestochowa University of Technology
The main stages of the reclamation of solid waste landfills have been considered. The processes that limit ensuring the ecological safety of reclamation have been identified. In particular, three stages that may be hazardous for the environment have been highlighted: leachate treatment, preparation of soil or substrate for biological reclamation, and preparation of seeds and planting material. Leachate treatment by the aeration method in an aerated lagoon is recommended. The prospect of using such a process has been investigated in laboratory conditions. To ensure the prolonged release of nutrients in the reclamation layer, it is suggested to use encapsulated fertilizers. The effectiveness of the encapsulated fertilizer covered with a PET shell has been studied. For afforestation using high-quality planting material, the use of in vitro microcloning technology is proposed. The perspective of the method is shown in the example of microcloning of the white mulberry Morus alba L.
Features of adsorption processes for wastewater treatment from zinc ions
(Видавництво Львівської політехніки, 2021-06-01) Petrushka, Ihor; Bratus, Oksana; Petrushka, Kateryna; Lviv Polytechnic National University
The results of adsorption properties of complex natural sorbents in relation to the neutralization of zinc ions from wastewater are presented. The adsorption isotherm of Zn2+ ions on complex sorbents (clinoptilolite-shungite) (1:1) according to Langmuir and Freundlich models is constructed, the type of adsorption isotherms according to S. Brunauer classification is established. The value of the maximum sorption capacity of Gmax complex sorbents for Zn2+ ions is calculated. The peculiarities of the sorption process of zinc ions with the formation of a monomolecular layer based on the calculated coefficients of the Langmuir and Freundlich were found. The optimal conditions for the dependence of the degree of absorption of Zn2+ ions by complex sorbents on the duration of the sorption process are determined. The ratio “solid (complex sorbent) – liquid” was determined experimentally.
Improvement of adsorption processes of wastewater treatment from nickel ions
(Видавництво Львівської політехніки, 2020-02-10) Petrushka, Ihor; Petrushka, Kateryna; Bliatnyk, Bohdanna; Lviv Polytechnic National University
The sorption properties of natural and complex sorbents for neutralization of Ni2+ ions from the water environment were studied. The isotherm of the adsorption of Ni2+ ions on complex sorbents (activated bentonite to shungite is 1:1) according to the Langmuir and Freundlich’s models was drawn; the type of adsorption isotherms according to the S. Brunauer’s classification was established. The values of the maximum sorption capacity of Гmax sorbents relative to Ni2+ ions were calculated. Based on the calculated coefficients of the Langmuir and Freundlich's equations, the specificity of the process of sorption of Nickel ions with the formation of a monomolecular layer was determined. The dependences of the degree of absorption of Ni2+ ions by complex sorbents on the duration of the sorption process were obtained. The ratio of solid state of matter (comprehensive sorbent) to liquid was experimentally determined.
Improvement of Adsorption-Ion-Exchange Processes for Waste and Mine Water Purification
(Видавництво Львівської політехніки, 2019-02-28) Malovanyy, Myroslav; Petrushka, Kateryna; Petrushka, Ihor; Lviv Polytechnic National University
Досліджено підвищення рівня екологічної безпеки гідросфери в результаті удосконалення адсорбційних процесів очищення стічних та шахтних вод від забруднень із застосуванням природних сорбентів та процесів знесолювання електродіалізом. Встановлені оптимальні параметри удоско- налення процесів сорбції забруднень природними сорбентами. Механізм дифузії досліджений методом «кінетичної пам‘яті». Визначені ефективні коефіцієнти внутрішньої дифузії в процесі сорбції забруднень природними сорбентами. Встанов- лені оптимальні параметри реалізації електродіалізу із міжмембранною засипкою йонітом для демінералізації стічних та шахтних вод.
Influence of heavy metals oxides on the pollution of the soil environment as a consequence of military actions
(Видавництво Львівської політехніки, 2023-02-28) Petrushka, Kateryna; Petrushka, Ihor; Lviv Polytechnic National University
Heavy metals enter the soil in the form of oxides and salts (both soluble and practically insoluble in water). There is an assumption that heavy metal oxides are fixed mainly in the solid phase of the soil, especially in a neutral or alkaline pH environment. It should be noted that their toxic effect depends entirely on such factors as the type of soil and the pH of the pore solution. The behavior of heavy metals in soils is significantly different from the behavior of most cations of macroelements. The purpose of this work is to assess the anthropogenic impact of heavy metal oxides, as well as accompanying oxides that are formed as a result of an explosion on the ground. To assess the degree of soil contamination, distribution and immobilization of heavy metals in the soils of industrial agglomerations.
Obtaining Environmentally Friendly Encapsulated Mineral Fertilizers Using Encapsulated Modified Pet
(Видавництво Львівської політехніки, 2022-03-01) Grechanik, Ruslan; Lutek, Wojciech; Malovanyy, Myroslav; Nagursky, Oleg; Tymchuk, Ivan; Petrushka, Kateryna; Luchyt, Liubov; Storoshchuk, Uliana; Lviv Regional State Administration; Maria Curie Sklodowska University; Lviv Polytechnic National University
The article deals with the study of the prospects for the use of mineral fertilizers encapsulated in PET for bioremediation. This increases efficiency, prevents environmental pollution from undigested plants with plant nutrients, and minimizes the number of application operations. In addition, it disposes of a significant portion of PET waste, the uncontrolled accumulation of which poses a threat to the environment. The basic technological schemes of preparation of a film-forming composition and encapsulation of fertilizers are offered. The kinetic parameters of the process of release of batteries of granulated ammonium nitrate encapsulated with a film based on modified PET are determined.
Optimum collection and concentration strategies of hydrobionts excess biomass in biological surface water purifying technologies
(Видавництво Львівської політехніки, 2021-03-03) Malovanyy, Myroslav; Tymchuk, Ivan; Balandiukh, Iurii; Soloviy, Christina; Zhuk, Volodymyr; Kopiy, Maria; Stokaliuk, Oleh; Petrushka, Kateryna; Lviv Polytechnic National University; Ukrainian National Forestry University; Lviv State University of Life Safety
The analysis of perspective collection and concentration technologies of excess biomass in the technologies of wastewater and surface water biological treatment with the use of aquatic organisms has been carried out. The scheme of a life cycle of the aquatic organisms in wastewater and surface water treatment technologies has been proposed. The analysis of technological approaches for biomass collection of three types: aquatic plants and macroalgae; aquatic plants with a developed root system and microalgae of aquatic organisms has been carried out. A strategy for concentrating microalgae has been proposed. The high efficiency of the coagulation-flocculation gravitational thickening method of freshwater microalgae suspensions of the Microcystis aeruginosa species has been confirmed in laboratory conditions.
Popularization of the organic component composting of household waste among the population
(Видавництво Львівської політехніки, 2021-03-01) Korbut, Mariia; Malovanyy, Myroslav; Petrushka, Kateryna; Lutek, Wojciech; Zhytomyr Polytechnic State University; Lviv Polytechnic National University; Maria Curie Sklodowska University
The study, using a survey, found social attitudes towards the separate collection and problematic issues that may hinder its implementation. It was found that most respondents are not familiar with the possibilities of waste composting at home, and residents of multi-storey buildings generally consider composting at home in the kitchen inexpedient. The paper identified the causes of ignorance of the population on household composting conditions. The paper presents the scientific results of the popularization of composting with microbiological additives at home among the population. The study aimed to develop a practical, effective model for the management of the bioorganic component of municipal solid waste, which minimizes the impact of waste on the environment and maximizes resource potential by organizing composting organic waste at home. Based on the research data, recommendations for the population of Zhytomyr on composting household waste have been developed. They explain in detail the mechanism of composting at home and outline the benefits of such composting. The obtained results are practical, they can be used for explanatory work among the population and the development of recommendations on separate waste collecting and composting of the organic part of household waste in domestic conditions.
Socio-psychological essence of attractiveness for the subjects of entrepreneurial activities of adsorption extraction of Nickel ions (II) by bentonite clays
(Lviv Politechnic Publishing House, 2019-02-26) Sakalova, Halyna; Palamarchuk, Olha; Vasylinycz, Tamara; Petrushka, Kateryna; Zaharko, Jaroslava; Stocaluk, Oleh; Vinnytsia State Pedagogical University named after Mykhailo Kotsiubynsky; Lviv Polytechnic National University; Lviv State University of Life Safety
The article considers an actual but not sufficiently developed problem of attractiveness for the subjects of entrepreneurial activity of adsorption extraction of Nickel ions (II) by bentonite clays. The basic social and psychological mechanisms for the adoption of environmentally-oriented activities are analyzed. The styles of entrepreneurs’ response to the attractiveness of adsorption extraction of Nickel ions (II) by bentonite clays are characterized. The process of sorption of Nickel ions (II) with a fixed layer of sorbent by bentonite clays is investigated. The main advantages of using bentonites in water treatment technologies are described: powerful geological reserves, cheap rock formation, simple preparation for transportation and use, the possibility of using spent sorbents in other technologies, eliminating the need for expensive regeneration. The influence of different factors (length of the process, layer of the adsorbent) on the degree of wastewater treatment from Nickel ions, influence of pumping speed on dynamic capacity of the sorbent is investigated and effective volume is determined. The results of the research indicate that the use of natural mineral sorbents, in particular, the bentonite clay of Cherkassy deposit, is promising and effective for purification of waste water from Nickel (II) ions.
State and Prospects of Solar Energy Development
(Видавництво Львівської політехніки, 2022-03-01) Petrushka, Kateryna; Hanuliak, Julianna; Petrushka, Ihor; Lviv Polytechnic National University
The potential of solar energy in Ukraine is high enough for widespread implementation. The most promising method of obtaining electricity is a method of direct conversion of radiation into electricity using solar panels. The production of electricity using solar panels prevents air pollution compared to the production of electricity by thermal power plants and reduces greenhouse gas emissions. The conversion of solar energy into electricity is environmentally friendly compared to traditional energy sources, but at the same time, after their operation, they generate waste that is difficult to utilize.
The efficiency of wastewater purification from chromium (III) Ions by natural clay sorbents
(Lviv Politechnic Publishing House, 2018-02-26) Sakalova, Halyna; Vasylinych, Tamara; Petrushka, Kateryna; Stocaluk, Oleh; Chornomaz, Nataliya; Sakalova, Halyna; Vasylinych, Tamara; Petrushka, Kateryna; Stocaluk, Oleh; Chornomaz, Nataliya; Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University; Lviv Polytechnic National University; Lviv State University of Life Safety; Ternopil Ivan Puluj National Technical University
The study confirmed the promising application of clays mineral sorbents for wastewater purification from Chromium (III) ions. The process of chromium ions absorption from drain water by means of natural mineral sorbent glauconite in static conditions was investigated. The adsorption processes were adapted to the known technological schemes of sewage and polluted surface water purification from heavy metal ions. There were measured the technological aspects of water purification by using adsorption on natural dispersed sorbents.
Theoretical and practical aspects of the efficiency of application of mineral fertilizers encapsulated with polyethylene terephthalate
(Видавництво Львівської політехніки, 2020-02-10) Synelnikov, Serhiy; Malovanyy, Myroslav; Nahurskyy, Oleh; Luchyt, Liubov; Petrushka, Kateryna; Tymchuk, Ivan; Stokaliuko, Oleh; Lviv Polytechnic National University; Lviv State University of Life Safety
The environmental impact of residual mineral fertilizers not utilized by plants is analyzed. It is shown that this negative effect extends to all elements of the environment: soil, atmosphere, hydrosphere. The perspective of the application of encapsulated mineral fertilizers that allow prolonged release of plant nutrients is outlined. The appliccation of modified polyethylene terephthalate (PETF) as a capsule-forming material for encapsulated mineral fertilizers is proposed. PET modification and fertilizer encapsulation technologies have been tested. The dynamics of the release of nutrients from fertilizers encapsulated by PET has been studied. The kinetics of watercress salad growth with the use of granular and encapsulated fertilizers has been investigated.
Use of clay sorptive materials in the synthesis of polymer materials
(Видавництво Львівської політехніки, 2022-06-01) Kryklyvyi, Rostyslav; Sakalova, Halyna; Petrushka, Kateryna; Luchyt, Liubov; Vinnytsia Mykhailo Kotsiubynskyi State Pedagogical University; Lviv Polytechnic National University
The paper suggests the solution to the urgent problem of increasing the level of environmental safety of industrial wastewater treatment from heavy metal using natural and modified bentonite.The use of spent bentonite in the processes of filling polymers is investigated. The aim of the research was to study the influence of fillers on the crosslinking course and functional properties of vulcanized elastomeric mixtures. Test research compositions included chloroprene rubber and chlorosulfonated polyethylene. Nanofillers were used as a strengthening substance. Montmorillonite and spent montmorillonite saturated with copper ions were used as nanofiller.
Wood wastes utilization of the Pokuttia–Bukovyna Carpathians as the result of introduction of improved production technology of fuel briquettes
(Lviv Politechnic Publishing House, 2019-02-26) Masikevych, Andriy; Kolotylo, Mykhailo; Bat, Roman; Masikevych, Yuri; Malovanyy, Myroslav; Atamanyuk, Volodymyr; Petrushka, Kateryna; Bukovinian State Medical University; National Natural Park “Vizhnitsky”; Lvivskyy Beton; Lviv Polytechnic National University
Ecological danger from uncontrolled accumulation of arboreal wastes in the region of Pokuttia– Bukovyna Carpathians has been estimated. The optimum terms of wood wastes drying in an immobile layer have been studied. The optimum conditions for getting fuel brequettes from wood wastes by the pressing method havw been set. Lignin-containing industrial wastes have been used as a relating component. The principal technological scheme has been offered for fuel granules production from wood wastes by the pressing method.