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Changes in the Structure of Soil Microscopic Fungi in the Territories of Yavoriv and Podorozhenie Sulfur Quarries

Oliferchuk Viktorija, Kendzora Nataliia, Hotsii Nataliya, Shukel Igor, Olejniuk-Puchniak Oksana, Samarska Mariia, Nagurskyy Oleg, Vasiichuk Viktor

Ecological Engineering & Environmental Technology

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2023

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Vol. 24, iss. 3

120-134

EN

The article presents the results of monitoring the soil mycobiota of sulfur quarries in LvivRegion. The dynamics of soil micromycete complexes as a result of their adaptation to the conditions of technozems, embryozems and zonal soils of sulfur quarries was studied. The increase in the number of colony-forming units (CFU) in the studied soils of the Yavoriv and Podorozhnie sulfur quarries over the years is specified, which indicates the active processes of decomposition of plant remains, the formation of stable processes of decomposition of cellulose and other complex compounds in the detrital block of the ecosystem. The change in the frequency of banding of selected species of micromycetes over the years was studied, depending on the content of SO4-2 in the soil solution. The functional structure of soil micromycete communities after sulfur extraction was established. A decrease in the frequency of occurrence of pathogens and toxin-producing agents and an increase in the frequency of occurrence of species that actively participate in the transformation of organic remains, and also act as plant endophytes and participants in mycorrhizal symbiosis were recorded. The species composition of micromycetes that grew in the presence of SO4-2 content in the soil solution, which exceeded the background level from 3.6% to 50%, was determined, the species-bioindicators of soil pollution with sulfur compounds were defined - Fusarium oxysporum, Paecilomyces lilacinum, P. waksmanii, P. nigricans, P. funiculosum, Trichoderma viride, Cladosporium cladosporioides, C. herbarum, Aureobasidium pullulans, Humicola grisea, Ulocladium consortiale, Alternaria alternate, Mortierella ramanniana var. angulispora. During 10 years of research a decrease in the content of SO4-2 in soils was noted, which is associated with an increase in the biodiversity of soil micromycetes and an enrichment of the phytocenotic cover.

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Utilization of Household Plastic Waste in Technologies with Final Biodegradation

Nahursky Oleg, Krylova Halyna, Vasiichuk Viktor, Kachan Stepan, Nahursky Andriy, Paraniak Nadiia, Sabadash Vira, Malovanyy Myroslav

Ecological Engineering & Environmental Technology

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2022

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Vol. 23, iss. 4

94--100

EN

We have carried out research on multi-stage handling of polyethylene terephthalate and polystyrene household waste. The method has been developed for both their safe utilization in manufacturing technologies and the use of encapsulated mineral fertilizers. The technical feasibility of implementing all stages of plastic waste processing has been defined: separate collection, creation of a film-forming composition, encapsulation of granular fertilizers. Our study has confirmed the safe biodegradation of polymer shell residues in the soil environment after the dissolution of the fertilizers. The proposed method of handling of these wastes is a method of their safe utilization.

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Safety Usage of Encapsulated Mineral Fertilizers Based on Polymeric Waste

Nagurskyy Oleg, Krylova Halyna, Vasiichuk Viktor, Kachan Stepan, Dziurakh Yurii, Nahursky Andriy, Paraniak Nadiia

Ecological Engineering & Environmental Technology

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2022

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Vol. 23, iss. 1

156--161

EN

The research was conducted on the growth and vital functions of watercress under the conditions of encapsulated mineral fertilizers treatment. The cyclic application of mineral fertilizers during three vegetation periods was simulated in this paper. The used mineral fertilizers were encapsulated on the basis of polyethylene terephthalate and polystyrene waste. It was found that the intermediate products of the polymer covering decomposition do not have a negative impact on the soil environment and the use of encapsulated fertilizers is safe for growing plants.

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Obtaining New Aluminium Water Clarification Coagulant from Spent Catalyst

Vasiichuk Viktor, Kurylets Oksana, Nahurskyy Oleg, Kuchera Yaroslav, Bukliv Roksoliana, Kalymo Yaroslav

Ecological Engineering & Environmental Technology

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2022

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Vol. 23, iss. 3

47--53

EN

The viability of obtaining aluminium coagulant from the solid vinyl chloride production waste (spent catalyst) was studied. The new coagulant Al6(OH)13Cl5 was established to be effective for clarifying water with high levels of suspended substances. The consumption of the new coagulant is significantly lower than that of conventional aluminium sulphate. The application of the new coagulant, aluminium chlorohydrate, makes it possible to enhance the properties of the purified water, in particular, its hardness. The method for obtaining the new coagulant and its use for water conditioning and purification was proved viable. The process flow sheet diagram for the coagulant production was suggested.