Environmental hazard of Novoyavorivsk municipal landfill

The application of nitrogen fertilizers allows increasing crop yields and partially increase the natural soil fertility. They have a negative influence on the environment due to the significant release of nitrogen. Hence, the technology for decreasing the N-release is proposed in this work. Obtaining of complex organo-mineral NPK fertilizers by encapsulating a carbamide granule with a phosphate-potassium shell with humates is the main aim of this work. The main tasks of this shell is slow release of the nitrogen and phosphate nutrients from the granules into the soil following the agrochemical needs of plants and prevention of soil pollution. The powdered components agglomeration of phosphate and potassium fertilizers with a small amount of liquid phase (plasticizer) allows forming a phosphate-containing coating on a carbamide core by means of the semi-dry method. This innovation allows organizing the production of such a product at the average enterprise with less capital investment. Carbamide prills, phosphate-glauconite concentrate, calcium and potassium ballast humate, and "Avatar" trace-element chelate complex were used in experimental studies. A preliminary assessment of the market prospects for such an innovation shows a high level of market attractiveness for all market participants: producers, consumers, and society.

Section: Introductionmentioning

confidence: 99%

Minimization of Soil Pollution as a Result of the Use of Encapsulated Mineral Fertilizers

Vakal¹,

Yanovska²,

Vakal³

et al. 2021

“…One of the most dangerous effects arising from the landfills operation is the burning of household waste. In addition to the burning of garbage with different morphological composition, the vegetation appeared during the natural overgrowth (vegetative reclamation), is exposed to high temperature (Popovych et al, 2018). Under the influence of direct fire most plants in landfills are killed.…”

Section: Introductionmentioning

confidence: 99%

Heat Resistance of Landfill Vegetation

Popovych¹,

Stepova²,

Telak³

et al. 2021

Self Cite

The heat resistance of vegetation at landfills is worth investigating for the determination of the optimal species for the biological reclamation phase. Insufficiency of experimental data on comparative stability of the stems and roots make it difficult to draw definitive conclusions about the heat resistance of the organs of the plants. It should be noted that many scientific works are devoted to the thermal stability of cultivated and agricultural plants. The reason is that the temperature conditions should be taken into account when growing vegetables, fruits and mushrooms. However, the heat resistance of weeds, specifically in landfills, has not been investigated thoroughly enough. Increased substrate temperatures at the landfill site, which are caused by the burning of waste, alter the microclimate, cause the greenhouse effect, and contribute to the climate change. The aim of the work was to investigate the heat resistance of 5 most common plant species that have evolved in the landfills of the Western Ukrainian Forest-Steppe District (Ukraine). The plant specimens were collected at the Lviv, Rava-Ruska and Chervonograd landfills. The heat resistance of landfill vegetation was determined according to the Matskov method during 2015-2018. The following materials, reagents and equipment were used for the experiments: green leaves of 5 species of the investigated plants (weeds)-wormwood (Artemisia vulgaris), absinthium (Artemisia absinthium), city goosefoot (Chenopodium urbicum), common burdock (Arctium lappa), dooryard plantain (Plantago major); 0.2 N hydrochloric acid; heated bath, thermometers, pipettes, petri dishes, crystallizers, electric hot plate, marker. The experiments were conducted in triplicate. During the investigation of the heat resistance of the landfill vegetation, it was found that the most stable species are wormwoods (Artemisia) in all areas of the landfill, and the least heat-resistant is city goosefoot. The temperature of 70-80°C is detrimental to all of the tested plants. It was found that the lowest heat resistance is characteristic of the plants that develop at the foot of landfills.

“…In particular, the research by Vodyanitskii (2016) stresses the fact that municipal solid waste landfill is one of the largest sources of environmental pollution, where leachate percolates through soil, reaches surface and ground waters. Increased radiation background is observed at the landfills (Tulaydan et al, 2017;Popovych et al, 2018;Malovanyy et al, 2018). The work of Fytanidis, Voudrias (2014) is dedicated to the modeling of unsaturated polyphase airflows and liquid phases and biochemical processes of aerobic biodegradation of organic fraction of municipal solid waste, taking into account their temporal and spatial evolution.…”

Section: Introductionmentioning

confidence: 99%

Migration of Hazardous Components of Municipal Landfill Leachates into the Environment

Popovych¹,

Telak²,

Telak³

et al. 2020

Self Cite

The research on the physical and chemical properties of landfill leachates and migration of its hazardous components into hydrosphere and biosphere is a current problem in the global context. The object of the research is landscape-changing factors of the Lviv municipal landfill (Ukraine). It was defined that the largest part of oil products accumulates in the leachates at the southwestern side of the landfill (23.6 mg/dm 3) and it is 2.36 times higher than the value of the maximum permissible concentration (MPC) (10 mg/dm 3); the most saline leachates with chlorides and sulfites are those accumulating at the foot and at the northwestern side; the phosphate content of the investigated leachate samples was the highest at the foot of the landfill and amounted to 12.8 mg/dm 3 , which exceeds the MPC (10 mg/dm 3) by 1.28 times; high concentration of ammonium nitride was discovered in the leachates at the foot (76.1 mg/dm 3) and at the northwestern side (46.3 mg/dm 3), which exceeds the MPC (30 mg/dm 3) by 2.53 and 1.54 times, respectively; the highest indicators of total iron are typical for basins nearby (at the foot-68.2 mg/dm 3 , at the northwestern side-56.3 mg/dm 3) and exceed the MPC norms (2.5 mg/dm 3) by 27.28 and 22.52 times, respectively. According to certain indicators, the content of hazardous components in the leachates, which accumulate at the foot and at the northwestern side, exceeds the MPC and is several times higher than in the natural basins at the distance of 800 and 1200 m.