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Papers by Peter Tonhauzer
Journal of Radioanalytical and Nuclear Chemistry
Air quality in urban areas is mainly controlled by emission sources and dispersion conditions. Th... more Air quality in urban areas is mainly controlled by emission sources and dispersion conditions. The mixing layer height (MLH) within which the pollutants are dispersed plays an important role in air pollution assessment. In this study, the MLH was determined based on the daily radon flux obtained from the European radon flux map and outdoor radon concentration measured in Bratislava, Slovakia. The radon-based MLH was compared with the boundary layer height obtained from the ERA-5 reanalysis dataset, showing good agreement. Using the Sturges grouping method and regression analysis, radon-based MLH showed significant correlations with the concentration of various atmospheric pollutants.
Applied Mechanics and Materials, 2016
This article focuses on the use of alternative renewable energy sources (waste and biomass) as a ... more This article focuses on the use of alternative renewable energy sources (waste and biomass) as a full replacement for traditional non-renewable resources. We focus on ways to increase the heating value of the raw materials by drying and pyrolysis, and the possibilities of influencing low heating value of fuels by using pyrolysis products. Pyrolysis generates heat and products, which may be used directly as fuel or after modification as additives for fuels. Pyrolysis is a suitable process for recovery of municipal, biological or contaminated waste. It contributes to a sustainable way of energy production and waste management. Moreover, the production in local conditions from local resources, increases land use, employment in the regions and energy self-sufficiency in the state. With combined production of fuels (pellets, briquettes) from biomass, wastes and pyrolysis products we expect to increase the heating value of well over 20 MJ.kg-1.
Atmosphere
Leaching of nitrogen from the soil is a natural but unfavorable effect that generates N2O emissio... more Leaching of nitrogen from the soil is a natural but unfavorable effect that generates N2O emissions. Exact quantification of nitrogen leakage is a challenging process. Intensive leakage occurs mainly when the soil is without vegetation and under specific climatic conditions. This paper aims to quantify the amount of nitrogen leakage from arable land and grassland, and to estimate N2O emissions in 2017. Estimating the country-specific fraction of leached nitrogen (FracLEACH) is important for the emission balance from this source. Emissions are underestimated when the fraction is low; on the contrary, a high fraction causes overestimation. The internationally recognized fraction is 30%, according to the 2006 Intergovernmental Panel on Climate Control (IPCC) Guidelines. This factor represents the fraction of nitrogen losses compared to total nitrogen inputs and sources. In this study, we analyzed the effects of climatic conditions on agricultural soils in Slovakia to evaluate the area ...
Applied Mechanics and Materials, 2016
Journal of Radioanalytical and Nuclear Chemistry
Air quality in urban areas is mainly controlled by emission sources and dispersion conditions. Th... more Air quality in urban areas is mainly controlled by emission sources and dispersion conditions. The mixing layer height (MLH) within which the pollutants are dispersed plays an important role in air pollution assessment. In this study, the MLH was determined based on the daily radon flux obtained from the European radon flux map and outdoor radon concentration measured in Bratislava, Slovakia. The radon-based MLH was compared with the boundary layer height obtained from the ERA-5 reanalysis dataset, showing good agreement. Using the Sturges grouping method and regression analysis, radon-based MLH showed significant correlations with the concentration of various atmospheric pollutants.
Applied Mechanics and Materials, 2016
This article focuses on the use of alternative renewable energy sources (waste and biomass) as a ... more This article focuses on the use of alternative renewable energy sources (waste and biomass) as a full replacement for traditional non-renewable resources. We focus on ways to increase the heating value of the raw materials by drying and pyrolysis, and the possibilities of influencing low heating value of fuels by using pyrolysis products. Pyrolysis generates heat and products, which may be used directly as fuel or after modification as additives for fuels. Pyrolysis is a suitable process for recovery of municipal, biological or contaminated waste. It contributes to a sustainable way of energy production and waste management. Moreover, the production in local conditions from local resources, increases land use, employment in the regions and energy self-sufficiency in the state. With combined production of fuels (pellets, briquettes) from biomass, wastes and pyrolysis products we expect to increase the heating value of well over 20 MJ.kg-1.
Atmosphere
Leaching of nitrogen from the soil is a natural but unfavorable effect that generates N2O emissio... more Leaching of nitrogen from the soil is a natural but unfavorable effect that generates N2O emissions. Exact quantification of nitrogen leakage is a challenging process. Intensive leakage occurs mainly when the soil is without vegetation and under specific climatic conditions. This paper aims to quantify the amount of nitrogen leakage from arable land and grassland, and to estimate N2O emissions in 2017. Estimating the country-specific fraction of leached nitrogen (FracLEACH) is important for the emission balance from this source. Emissions are underestimated when the fraction is low; on the contrary, a high fraction causes overestimation. The internationally recognized fraction is 30%, according to the 2006 Intergovernmental Panel on Climate Control (IPCC) Guidelines. This factor represents the fraction of nitrogen losses compared to total nitrogen inputs and sources. In this study, we analyzed the effects of climatic conditions on agricultural soils in Slovakia to evaluate the area ...
Applied Mechanics and Materials, 2016