Browsing by Author "Malovanyy, Myroslav"

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Aerated concrete with the use of ferruginous quartzite processing waste
(Видавництво Львівської політехніки, 2020-10-10) Malovanyy, Myroslav; Ilyash, Oksana; Povzun, Oleksiy; Kalynychenko, Valeriy; Bylym, Ludmyla; Kasich, Vitaliy; Lviv Polytechnic National University; Yuri Kondratyuk National Polytechnic University of Poltava; Donetsk National Technical University
Waste (tailings) of mining and processing plants of Kryvbas were studied by the stages of their magnetic enrichment. The granulometric compositions of the tailings, the amount of iron (total and magnetic) and the mass fraction of solid in them are determined. The expediency of disposing of ferruginous quartzite waste at the first stage of enrichment as a silica component in cellular concretes is proved. Optimal compositions of aerated concrete mixtures are determined based on the following criteria: the average density of cellular concrete in the dry state and its compressive strength.
Analysis of poultry manure utilisation methods to produce organic fertiliser
(Lviv Politechnic Publishing House, 2018-02-26) Malovanyy, Myroslav; Odnorih, Zoryana; Kanda, Mariya; Lviv Polytechnic National University
This article provides an overview of the poultry manure utilisation issues. It gives a comparative analysis of the methods of composting and vermiculation, production of organic-mineral fertilisers, granulation and thermal drying of the output raw product. Integrated combination of granulation and thermal drying is considered to be the most efficient in the poultry manure processing technology.
Analysis of the main methods of solid waste management
(Видавництво Львівської політехніки, 2021-06-01) Storoshchuk, Ulana; Malovanyy, Myroslav; Tymchuk, Ivan; Luchyt, Liubov; Lviv Polytechnic National University
The world’s growing population and, as a result, higher consumption of goods and services have led to a rapid increase in municipal solid waste. This situation creates serious environmental problems that require clear strategies for managing this waste. Improving the efficiency of recycling to restore quality materials, saving resources and maintaining waste in landfills are among the most pressing problems of our time. The article considers the existing methods of solid waste management in order to select the most optimal waste management system in the context of sustainable development.
Composting as one of the prospective methods of recycling the organic component of municipal solid waste
(Видавництво Львівської політехніки, 2020-02-24) Storoshchuk, Ulana; Malovanyy, Myroslav; Tymchuk, Ivan; Lviv Polytechnic National University
In the conditions of constant deterioration of the environment, municipal solid waste management (MSW) in Ukraine remains one of the most pressing challenges in environmental safety because of its significant accumulation in landfills and the lack of effective mechanisms for its disposal. Approximately 40–50 % of municipal solid waste is organic, so the removal of this part of waste from landfills through composting and conversion of waste into secondary material resources will significantly reduce the environmental load on existing and potentially planned landfills. Therefore, the choice of promising technologies for the disposal of organic waste is one of the major tasks to ensure environmental safety. One of the effective strategies for dealing with excessive amounts of organic waste and one of the best and most affordable technologies for the waste recycling system is composting.
Conditions for cyanobacteria biomass development and selection for further processing
(Видавництво Львівської політехніки, 2017-12-23) Soloviy, Khrystyna; Malovanyy, Myroslav; Lviv Polytechnic National University
The purpose of research is to define place of cyanobacteria in the system of micro and macroalgae, discover peculiarities for conditions of their development and biomass selection fur further processing
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.
Decreasing anthropogenic pressure on soil microflora by using capsulated fertilizers
(Lviv Politechnic Publishing House, 2017-03-21) Tymchuk, Ivan; Malovanyy, Myroslav; Holets, Nataliya; Lviv Polytechnic National University
This article focuses on finding ways to preserve soil fertility. At the present time, in conditions of intensive farming, do not pay attention to such an important part of the agricultural ecosystem as soil microflora. An impact on the number of total and nitrogen-fixing microorganisms of the soil at bringing different types of fertilizers on the most common types of soil of Lviv region are determined.
Determination of an impact of the composition on the pH level and the concentration of ammonium nitrogen in soil of Pustomyty distrаct, Lviv region
(Publishing House of Lviv Polytechnic National University, 2017) Кanda, Maria; Malovanyy, Myroslav; Оdnorih, Zoryana; Lviv Polytechnic National University
This research involves studying the application of palygorskite from Dashukivka Deposit and clinoptilolite from Sokyrnytsia Deposit in production of organic fertilizers prolonged. It is found that maximum ammonia sorption capacity is 1.56×10-2 mg-eq/g of sorbents. The composition proposed has a positive impact on condition of the studied soils. The pH level of soil solution shifts toward neutral, and the level of ammonium nitrogen is uniform throughout 24 days.
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.
Determination of significant factors of landslide processes and flooding
(Видавництво Львівської політехніки, 2020-02-10) Katkov, Mykhailo; Malovanyy, Myroslav; Kotsiuba, Iryna; Senchuk, Tetyana; Lavinda, Maryna; Kharkiv National University of Urban Economy named after O. M. Beketov; Lviv Polytechnic National University; Zhytomyr Polytechnic State University
The linear dependence of some geological (significant) factors responsible for landslide and flooding processes on the cost of geotechnical surveys determining these factors was proved. The principle of selection of engineering-geological surveys, which assess the factors of occurrence of landslide and flooding with high probability, was developed. The possibility of identifying economic territories that may be susceptible to landslide and flooding processes based on already existing basic data of previously conducted engineering-geological surveys is substantiated. A preproject (planned) method of calculating the costs of geotechnical surveys based on the existing basic data is proposed.
Development of Lightweight Grouting Materials Based on By-Products of Ukrainian Industry
(Видавництво Львівської політехніки, 2023-02-28) Orlovskyy, Vitalii; Biletskyi, Volodymyr; Malovanyy, Myroslav; Kharkiv National University of Urban Economy named after O. M. Becketov; National Technical University “Kharkiv Polytechnic Institute”; Lviv Polytechnic National University
Створено новий конкурентоздатний клас тампонажних матеріалів – полегшених і легких тампонажних матеріалів (ПТМ) густиною 1370–1650 кг/м3. Компоненти: тампонажний портландцемент ПЦТІ 100, побічний продукт виробництва шамоту з каолінової сировини тонкодисперсний порошок марки ПЕ, кислі золи виносу ТЕС, побічний продукт виробництва вапна вапняний пил (ВП). Рентгенофазовим і диференційно-термічним аналізом полегшеного тампонажного каменю уточнено склад новоутворень у процесі гідратації ПТМ. Визначено раціональні оптимальні співвідношення інгредієнтів і температурні режими тужавіння ПТМ за критеріями міцності цементного каменю.
Disposal of used forming mixtures from foundries of machine-building plants in the production of perforated material
(Видавництво Львівської політехніки, 2022-03-01) Malovanyy, Myroslav; Ilyash, Oksana; Povzun, Oleksiy; Bylym, Ludmyla; Osinniy, Nikita; Lviv Polytechnic National University; National University “Yuri Kondratyuk Poltava Polytechnic”; Donetsk National Technical University
The waste of foundries of machine-building plants - spent moulding mixtures was studied. The expediency of using spent mixtures of foundry production as a siliceous component of foam concrete mixtures has been proven. The spent mixtures were studied for their foaming ability. The foam properties are determined. The effect of concrete mixture components on the pore-forming ability of foam agents was investigated. Of the six foaming agents studied in the work, saponified tree resin was found to be the most effective. The technological parameters for the preparation of aerated concrete mixture have been developed. The average density of foam concrete in the dry state and its limit of compressive strength were used as criteria for resource evaluation of used moulding mixtures of foundry production. Foam concrete products of non-autoclave hardening with an average density of not less than 900 kg/ m3 and a compressive strength of not less than 4.5 MPa were obtained.
Environmental and resource evaluation of smelter slag
(Видавництво Львівської політехніки, 2020-02-10) Malovanyy, Myroslav; Ilyash, Oksana; Povzun, Oleksiy; Stepanets, Oleg; Serga, Tatiana; Gubar, Oksana; Serdyuk, Volodymyr; Lviv Polytechnic National University; Donetsk National Technical University
The gross emission of harmful substances (dust) while unloading the smelter slag of PJSC “Mariupol Iron and Steel Works” into the waste heaps from the dump truck body and during their storage was calculated. The expediency of restoration of blast furnace slag as a siliceous component in cellular concrete was proved. The optimal compositions of cellular concrete mixtures (including the addition of TLS plasticizer – technical lignosulfonate) were determined based on the following criteria: average density of cellular concrete in the dry state and its compressive strength.
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.
Evaluation of the degree of environmental hazard from environmental pollution in the area of poultry farms impact
(Lviv Politechnic Publishing House, 2019-02-26) Kanda, Maria; Malovanyy, Myroslav; Tymchuk, Ivan; Odnorih, Zoryana; Lviv Polytechnic National University
This article identifies the sources of environmental hazard in the area of poultry farms impact. The analysis of the nature and scope of pollution is made. Developmental specifics of poultry farming in Ukraine are considered. The prospects of the utilization of natural sorbents in the composition of bedding in order to mitigate pollution of the environment with ammonia and ammonium compounds are studied. The scope of reduction of environmental hazard as a result of the utilisation of natural dispersive sorbents in poultry farming is analysed.
Freshwater ecosystem macrophytes and microphytes: development, environmental problems, usage as raw material. Review
(Lviv Politechnic Publishing House, 2019-02-26) Soloviy, Khrystyna; Malovanyy, Myroslav; Lviv Polytechnic National University
Classification of macrophytes and microphytes in the system of hydrobionts is presented, individual characteristics of each macrophyte and microphyte type according to the given classification are presented, environmental problems concerning uncontrolled development of macrophytes and microphytes in water media are considered and several biotechnologies of application of their sustainable development are characterized.
Histrory of International Partnership – Scientific Priorities and Educational Activity of Professor Tsitsino Turkadze
(Видавництво Львівської політехніки, 2022-03-01) Malovanyy, Myroslav; Turkadze, Tsitsino; Lviv Polytechnic National University; Akaki Tsereteli State University
The article describes the main stages of professional work, scientific priorities, and educational activities of Professor Tsitsino Turkadze. The main results of joint research with a special international consortium for coordination of similar research on municipal solid waste management – determining the waste composition as function of economic, social, and seasonal changes; assessing future material and contaminant flows, considering different scenarios; quantifying and assessing the material resources and reserves from landfills. The article discusses the educational activities carried out in the high school to implementing modern research results in higher education programs and teaching.
Implementation of the european green strategy. Synergy of educational, scientific, managerial and industrial components for climate management and climate change prevention / Climan Erasmus+ KA2
(Видавництво Львівської політехніки, 2023-02-28) Liuta, Oksana; Malovanyy, Myroslav; Vnukova, Nataliia; Tymchuk, Ivan; Zhelnovach, Ganna; Kordzadze, Tea; Lviv Polytechnic National University; Kharkiv National Automobile and Highway University; Akaki Tsereteli State University
The urgent problems related to environmental and climate factors, the solution of which requires the involvement of highly qualified and narrow-profile specialists capable of solving and developing effective measures to minimize the negative effects of global warming, were analyzed. The analysis demonstrates that today in Ukraine, there is an urgent need to train climate management specialists due to the global nature of this problem. The main aspects and advantages of the participation of Ukrainian universities in the joint project Erasmus+ KA2 “Synergy of educational, scientific, managerial and industrial components for climate management and climate change prevention” (Climan), which promotes the implementation of multi-level education and professional training on climate services, climate change adaptation and mitigation at the local, national and regional levels are presented. The important particularities and innovative results of the project implementation in higher education institutions in Ukraine, which involve creating climate management centres based on educational institutions, developing interdisciplinary training modules Climate Management, and training qualified climate managers, were described.
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.
Improvement of environmental safety of agricultural systems as a result of encapsulated mineral fertilizers implementation
(Lviv Politechnic Publishing House, 2019-03-20) Synelnikov, Serhiy; Soloviy, Khrystyna; Tymchuk, Ivan; Malovanyy, Myroslav; Nahurskyy, Oleh; Lviv Polytechnic National University
The impact of mineral fertilizers on an agricultural system has been analyzed. It has been shown that encapsulated fertilizers of prolonged action are the effective type of fertilizers that enable to achieve rich harvests and simultaneously consistently reduce the load on the agricultural system. Balance calculations on evaluating the agricultural system contamination level in case of implementing granulated and encapsulated fertilizers have been carried out. It has been shown that in case of using encapsulated fertilizers instead of granulated fertilizers, the environmental contamination caused by excessive nutrition elements of mineral fertilizers indigested by the plants decreases almost fourfold. Pilot experiments on using such cultures as potato, soy, and maize have proven that the effectiveness of using encapsulated fertilizers in comparison with granulated fertilizers under condition of less expenses of mineral fertilizer is 30–50 % higher.