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001-es BibID:	BIBFORM124873
Első szerző:	Magyar Tamás (környezetmérnök)
Cím:	Study of nitrate mobility in Debrecen soils in model experiments / Tamás Magyar, Charuni Sewwandi, Péter Tamás Nagy
Dátum:	2024
Megjegyzések:	Rapid industrialization and urbanization during recent decades are having dramatic effects on urban soil properties and lead to large discharges of pollutants, which inevitably affect the health of the soil, ecosystems and human populations. The soil, an important component of the Earth that provides vital functions for human society. There are both direct and indirect effects of the soil on human health. Humans are directly exposed to contaminants in soil through skin contact, inhalation, ingestion and consumption of plants grown in soil, whereas indirect effects include interactions between soil, the soil microbial community, vegetation and the nutritional value of foods and human health. In this study, laboratory column experiments were conducted for over 30 days to investigate the transport of nitrate between soil layers. During the experiment the irrigation schedule of the trial was based on the rainfall distribution of a typical summer month in Hungary. Experiment was set up at three soils (loamy sand and two sandy-loam-loam) with similar organic carbon content (between 0.8 and 1.1%) and pH (7.90 and 7.25) but different texture (78-54% sand and 22-46% of silt+clay, respectively). Soils were then analyzed at different depths and vertical concentration profiles were plotted. Overall, highest concentrations were measured in the upper layers for contaminants in the soil column with higher clay content (C), whereas vertical profiles were more uniform in that with lower clay content (S). The results of laboratory column experiments were used to validate solute transport models built-up in HYDRUS modeling environment. Based on the validated models, different scenarios had been considered with variable initial nitrate concentration to predict the vertical nitrate distribution in the investigated soil profiles.
ISBN:	9789634906568
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat könyvrészlet
Megjelenés:	XX. Tiszántúli Agrártudományi Napok : Absztraktkötet / (szerk.) Veres Szilvia, Stündl László. - p. 59. -
További szerzők:	Sewwandi, Charuni Nagy Péter Tamás (1970-) (vegyész)
Pályázati támogatás:	RRF-2.3.1-21-2022-00008 Egyéb
Internet cím:	Szerző által megadott URL Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM126040
Első szerző:	Nagy Péter Tamás (vegyész)
Cím:	Study of heavy metal and nitrate pollution and mobility in Debrecen soils in model column experiments / Péter Tamás Nagy, Neha - Charuni Sewwandi, Tamás Magyar
Dátum:	2024
Megjegyzések:	Monitoring and regularly assessing urban soils is crucial due to their frequent contamination with various pollutants, particularly heavy metals like zinc (Zn) and copper (Cu) from industrial activities, as well as easily soluble nitrates resulting from agricultural practices. These contaminants accumulate in soils, presenting significant environmental and health risks. Heavy metals, for instance, can be absorbed by plants and enter the food chain, posing toxic threats to both humans and animals. While small amounts of zinc and copper are essential for plant and animal growth, their elevated concentrations can lead to toxicity. Debrecen plays a unique role in the Eastern Hungary region, sitting at the intersection of modern economic investments and traditional agricultural activities. This duality results in a mix of heavy metal pollution from industrial development and easily soluble, mobile compounds, such as nitrates, from agricultural practices. As a result, the soils in Debrecen are particularly susceptible to contamination from these sources, making it an important focus for our study. To explore these potential contaminants, we conducted model experiments investigating the migration of these pollutants in three different soil samples from the Debrecen area. The soils tested included a loamy sandy soil and two types of sandy loam soils. Experiment was set up at three soils with similar organic carbon content (between 0.8 and 1.1%) and pH (7.90 and 7.25) but different texture (78-54% sand and 22-46% of silt+clay, respectively). In our soil column leaching experiments, designed to simulate pollution, we used a pollutant solution with copper and zinc concentrations of 1 mg/L, 10 mg/L, and 100 mg/L and 1g/L, 5g/L, 10g/L for nitrate. Soil columns were prepared in triplicate, and the irrigation pattern simulated the average rainfall distribution of a typical summer month. The concentrations of copper and zinc in the soils were then measured using the ICP-OES method. Our findings revealed that the vertical migration of these pollutants within the soil columns varied significantly depending on the soil type and the concentration of contaminants applied. Specifically, it was observed that heavy metals, such as copper and zinc, introduced at the surface, began appearing in the deeper soil layers approximately one month later. This suggests that heavy metals applied at the surface can gradually percolate through the soil, posing a potential long-term risk to urban soils and possibly contributing to environmental degradation in urban settings. Soils were then analyzed at different depths and vertical concentration profiles were plotted. Overall, highest concentrations were measured in the upper layers for contaminants in the soil column with higher clay content (C), whereas vertical profiles were more uniform in that with lower clay content (S). The results of laboratory column experiments were used to validate solute transport models built-up in HYDRUS modeling environment. Based on the validated models, different scenarios had been considered with variable initial nitrogen concentration to predict the vertical nitrogen distribution in the investigated soil profiles. In conclusion, the study underscores the need for continuous monitoring of urban soils to mitigate the environmental and health risks posed by both industrial and agricultural contaminants.
ISBN:	978-615-5387-13-5
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat könyvrészlet
Megjelenés:	Budapest Soil Health Forum : Book of abstracts / ed. Nándor Csikós, Ágota Horel, Gergely Tóth, Zsófia Bakacsi. - p. 79. -
További szerzők:	Sewwandi, Charuni Magyar Tamás (1987-) (környezetmérnök)
Pályázati támogatás:	RRF-2.3.1-21-2022-00008 Egyéb
Internet cím:	Szerző által megadott URL Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM124876
Első szerző:	Nagy Péter Tamás (vegyész)
Cím:	Study of heavy metal mobility in Debrecen soils in model experiments / Péter Tamás Nagy, Neha, Tamás Magyar
Dátum:	2024
Megjegyzések:	Monitoring and continuous checking of urban soils is important because these soils are often contaminated with various heavy metals, such as zinc (Zn) and copper (Cu) from the industrial activities, as well as easily soluble nitrates from agricultural practices. The accumulation of heavy metals in the soil poses significant environmental and health risks, as these metals can be absorbed by plants and enter the food chain, ultimately affecting humans and animals with toxic effects. For instance, zinc and copper are essential for plants and animals in small amounts, but they can become toxic at high concentrations. Debrecen has a special role in the Eastern Hungary region because it is at the crossroads of new economic investment and old traditional agricultural activities. Therefore, heavy metals from economic investments and easily soluble and mobile compounds from agricultural production, such as nitrates, are present in Debrecen soils. For the reasons mentioned above, our study focuses on these components. We tested the migration of these components in model experiments on three different soil samples from the Debrecen area. In the trial a loamy sandy soil and two sandy loam soils were used. In the soil column leaching experiments to study the pollution, 1 litre pollutant solution contained 1mg-10mg and 100mg/L of copper and zinc were used, respectively.. Soil columns were set in three replicates and irrigated based on the rainfall distribution of an average summer month. Soil Cu and Zn content were measured by ICP-OES method. From our results, it was concluded that the vertical movement of contaminants in the soil column under investigation is significantly dependent on the type of soil tested and the applied concentrations. In the experiments, it has confirmed that heavy metal solutions applied to the surface appear in the deeper soil layer after one month later, and thus potentially pose a risk to soils in urban environments.
ISBN:	9789634906568
Tárgyszavak:	Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat könyvrészlet
Megjelenés:	XX. Tiszántúli Agrártudományi Napok : Absztraktkötet / (szerk.) Veres Szilvia, Stündl László. - p. 65. -
További szerzők:	Sewwandi, Charuni Magyar Tamás (1987-) (környezetmérnök)
Internet cím:	Szerző által megadott URL Intézményi repozitóriumban (DEA) tárolt változat
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