This page has only limited features, please log in for full access.
Accurate projection of gas generation from landfills poses numerous difficulties. One needs to select and use an appropriate method from among several available options, and consider local and individual conditions of a landfill. These aspects are crucial for the economic management of the landfill gas in new landfills, and for assessing the impact of the gas on soil-water environment in old landfills. This paper is aimed at reviewing the research methods that can be used to assess the activity of new municipal waste landfills currently in operation, and of old, closed landfills after reclamation. Landfill activity can be assessed using different models and analysis of the produced gas. The actual data on the investigated municipal landfill showed that the landfill activity can be accurately assessed based on the quantitative determination of biogas formation using the LandGEM method, and the analysis of gas phase variability in the landfill accounting for oxygen, methane, carbon dioxide and hydrogen sulfide share/presence. Each landfill is different and calls for an individual approach or methodological modifications.
Dorota Porowska. Review of Research Methods for Assessing the Activity of a Municipal Landfill Based on the Landfill Gas Analysis. Periodica Polytechnica Chemical Engineering 2021, 65, 167 -176.
AMA StyleDorota Porowska. Review of Research Methods for Assessing the Activity of a Municipal Landfill Based on the Landfill Gas Analysis. Periodica Polytechnica Chemical Engineering. 2021; 65 (2):167-176.
Chicago/Turabian StyleDorota Porowska. 2021. "Review of Research Methods for Assessing the Activity of a Municipal Landfill Based on the Landfill Gas Analysis." Periodica Polytechnica Chemical Engineering 65, no. 2: 167-176.
Monitoring the data of groundwater level in long-term measurement series has allowed for assessment of the impact of natural and anthropogenic factors on groundwater recharge. It allows for assessing the actual groundwater quantity, which constitutes the basis for balanced and sustainable groundwater planning and management in an urban area. Groundwater levels in three aquifers were studied: the shallow and deeper Quaternary aquifers and the Oligocene aquifer in Warsaw (Poland). Statistical analysis was performed on a 27-year (1993–2019) cycle of daily measurements of groundwater levels. The studies focused on determining the range and causes of groundwater level changes in urban-area aquifers. The groundwater table position in the Quaternary aquifer pointed to variable long-term recharge and allowed for the identification of homogenous intervals with identification of water table fluctuation trends. A decrease in the water table was observed within the Quaternary aquifers. The Oligocene aquifer displayed an opposite trend.
Ewa Krogulec; Jerzy Małecki; Dorota Porowska; Anna Wojdalska. Assessment of Causes and Effects of Groundwater Level Change in an Urban Area (Warsaw, Poland). Water 2020, 12, 3107 .
AMA StyleEwa Krogulec, Jerzy Małecki, Dorota Porowska, Anna Wojdalska. Assessment of Causes and Effects of Groundwater Level Change in an Urban Area (Warsaw, Poland). Water. 2020; 12 (11):3107.
Chicago/Turabian StyleEwa Krogulec; Jerzy Małecki; Dorota Porowska; Anna Wojdalska. 2020. "Assessment of Causes and Effects of Groundwater Level Change in an Urban Area (Warsaw, Poland)." Water 12, no. 11: 3107.
The choice of bottled waters available for sale is large. The assessment of their mineral composition was based on the results of 120 natural waters and 46 mineral waters (in relation to the hydrogeological classification of water mineralization). Significant diversity was found in terms of basic...
Dorota Porowska. Hydrogeological Assessment of the Mineral Composition of the Bottled Waters Available for Sale in Poland. Journal of Ecological Engineering 2020, 21, 103 -111.
AMA StyleDorota Porowska. Hydrogeological Assessment of the Mineral Composition of the Bottled Waters Available for Sale in Poland. Journal of Ecological Engineering. 2020; 21 (4):103-111.
Chicago/Turabian StyleDorota Porowska. 2020. "Hydrogeological Assessment of the Mineral Composition of the Bottled Waters Available for Sale in Poland." Journal of Ecological Engineering 21, no. 4: 103-111.
: Temporal and spatial variations of the concentration and the isotopic composition of groundwater sulfate in an unconfined sandy aquifer covered by peatland have been studied to better understand the sources and biogeochemical processes that affect sulfate distribution in shallow groundwater systems influenced by organic rich sediments. The groundwater monitoring was carried out for one year at hydrogeological station Pożary located within the protected zone of the Kampinos National Park. Sulfur (34SSO4) and oxygen (18OSO4) isotopic composition of dissolved sulfates were analyzed together with oxygen (18OH2O) and hydrogen (2HH2O) isotopic composition of water and major ions concentration at monthly intervals. The research revealed three main sources of sulfates dissolved in groundwater, namely, (a) atmospheric sulfates—supplied to the aquifer by atmospheric deposition (rain and snow melt), (b) sulfates formed by dissolution of evaporite sulfate minerals, mainly gypsum—considerably enriched in 34S and 18O, and (c) sulfate formed during oxidation of reduced inorganic sulfur compounds (RIS), mainly pyrite—depleted in 34S and 18O. The final isotopic composition and concentration of dissolved SO42− in groundwater are the result of overlapping processes of dissimilatory sulfate reduction, oxidation of sulfide minerals, and mixing of water in aquifer profile.
Adam Porowski; Dorota Porowska; Stanislaw Halas. Identification of Sulfate Sources and Biogeochemical Processes in an Aquifer Affected by Peatland: Insights from Monitoring the Isotopic Composition of Groundwater Sulfate in Kampinos National Park, Poland. Water 2019, 11, 1388 .
AMA StyleAdam Porowski, Dorota Porowska, Stanislaw Halas. Identification of Sulfate Sources and Biogeochemical Processes in an Aquifer Affected by Peatland: Insights from Monitoring the Isotopic Composition of Groundwater Sulfate in Kampinos National Park, Poland. Water. 2019; 11 (7):1388.
Chicago/Turabian StyleAdam Porowski; Dorota Porowska; Stanislaw Halas. 2019. "Identification of Sulfate Sources and Biogeochemical Processes in an Aquifer Affected by Peatland: Insights from Monitoring the Isotopic Composition of Groundwater Sulfate in Kampinos National Park, Poland." Water 11, no. 7: 1388.
Measurement and calculation of the carbon isotopic composition of groundwater from piezometers located around a reclaimed landfill were performed in order to test the method to distinguish the piezometers localized within the contaminated area and to identify the boundaries of the leachate plume. In order to select the best method for delineation of the leachate plume it was analyzed: chemical composition, the stable carbon isotopic composition in groundwater, and the calculation of carbon isotopic composition in groundwater. Comparison of the different methods for delineation of the leachate plume indicate, that the best method appear to be method based on the measurement and calculation of the carbon isotopic composition in groundwater. The proposed method has been tested using the data from Otwock landfill (Poland), but it can also be used in other contaminated areas.
Dorota Porowska. A Simple Method for Delineation of Leachate Plumes. Periodica Polytechnica Chemical Engineering 2017, 61, 1 .
AMA StyleDorota Porowska. A Simple Method for Delineation of Leachate Plumes. Periodica Polytechnica Chemical Engineering. 2017; 61 (3):1.
Chicago/Turabian StyleDorota Porowska. 2017. "A Simple Method for Delineation of Leachate Plumes." Periodica Polytechnica Chemical Engineering 61, no. 3: 1.
Chemical and isotopic analyses of groundwater from piezometers localized around a reclaimed landfill were performed in order to identify the boundaries of groundwater contamination zone. Spatial distribution of dissolved inorganic carbon (DIC) concentration and stable carbon isotopes in the groundwater was used to distinguish the piezometers localized within the contaminated aquifer. Background groundwater was characterized by low DIC concentration (from 1.8 to 5.0 mmol/L) and negative values of δ13CDIC (from −20.6‰ to −12.4‰). Higher DIC concentrations (from 6.0 to 12.5 mmol/L) and higher values of δ13CDIC (from −10.9 to +3.6‰) were determined in groundwater contaminated by landfill leachate. The study confirmed that δ13CDIC value in the groundwater was a useful tracer in determining the extent of the contamination zone around the landfill. In general, upgradient from the landfill, carbon isotopic composition of groundwater depended on natural sources of carbon and δ13CDIC values were negative. Downgradient from the landfill, where groundwater was contaminated by the landfill leachate, δ13CDIC values were higher, sometimes even positive.
D. Porowska. Identification of groundwater contamination zone around a reclaimed landfill using carbon isotopes. Water Science and Technology 2016, 75, 328 -339.
AMA StyleD. Porowska. Identification of groundwater contamination zone around a reclaimed landfill using carbon isotopes. Water Science and Technology. 2016; 75 (2):328-339.
Chicago/Turabian StyleD. Porowska. 2016. "Identification of groundwater contamination zone around a reclaimed landfill using carbon isotopes." Water Science and Technology 75, no. 2: 328-339.
The paper presents spatial analysis and numerical methods to describe the hydrodynamic and hydrochemical conditions in a groundwater system. The research was conducted in the northern part of the Białystok High Plane, eastern Poland, within a Quaternary multi-aquifer system. Spatial analysis was used for imaging the quasi-continuous structure of the system based on a discrete set of hydrogeological data. A high-resolution regional flow model was used to identify the groundwater discharge and discharge zones of the individual aquifers. Calculations have shown a marked asymmetry of the flow system. Deeply incised river valleys in the Niemen River basin more strongly affect the groundwater than the discharge zones in the valleys of the Vistula River basin. As a result, the underground watershed in deeper aquifers is clearly shifted westward in relation to the morphological watershed. The hydrodynamic conditions of the system determined by numerical methods were used to identify the points along the groundwater flow-path for the hydrochemical study. It was the basis for the identification of points located along the groundwater flow direction, which were used in the hydrochemical study. Computational schemes of water solution models were calculated for the quasi-equilibrium state of chemical reactions between the solution and the solid and gaseous phases. Presentation of the chemical reactions allowed determining the origin of changes in the concentrations of individual components dissolved in groundwater. It was found that kaolinitization, i.e. chemical weathering of feldspars and plagioclases is the basic process that most affects the groundwater chemistry.
Tomasz Gruszczyński; Marzena Szostakiewicz-Hołownia; Włodzimierz Humnicki; Jerzy J. Małecki; Dorota Porowska; Marcin Stępień. Use of numerical methods for identification of hydrodynamic field and hydrogeochemical processes in the Quaternary multi-aquifer system. Acta Geologica Polonica 2016, 66, 512 -526.
AMA StyleTomasz Gruszczyński, Marzena Szostakiewicz-Hołownia, Włodzimierz Humnicki, Jerzy J. Małecki, Dorota Porowska, Marcin Stępień. Use of numerical methods for identification of hydrodynamic field and hydrogeochemical processes in the Quaternary multi-aquifer system. Acta Geologica Polonica. 2016; 66 (3):512-526.
Chicago/Turabian StyleTomasz Gruszczyński; Marzena Szostakiewicz-Hołownia; Włodzimierz Humnicki; Jerzy J. Małecki; Dorota Porowska; Marcin Stępień. 2016. "Use of numerical methods for identification of hydrodynamic field and hydrogeochemical processes in the Quaternary multi-aquifer system." Acta Geologica Polonica 66, no. 3: 512-526.
The study was conducted around a reclaimed municipal landfill site, located in the suburbs of Otwock, about 25 km south-west of Warsaw (Poland). The research was carried out about 15 years after the landfill site ceased operation. According to the regulations on landfills sites in Poland (J. of Laws of 2002 No. 220 item 1858, Regulation of the Minister of Environment of 9 December 2002 on the scope, time, manner and conditions of landfill monitoring; J. of Laws of 2010 No. 238 item 1588, Regulation of the Minister of Environment of 8 December 2010 amending the regulation on the scope, time, manner and conditions of landfill monitoring), the monitoring period will end in 2021. Despite reclamation, the landfill site still affects the environment. The aim of this study was to assess the geochemical maturation of the stored waste and the landfill site activity by determining the current phase of the landfill site lifetime. This was achieved by means of non-standard application of carbon stable isotopes for the assessment of the landfill activity combined with conventional methods for measuring COD, BOD, DOC, BOD/COD ratio, and H2S and O2 content in biogas. An analysis of carbon isotopic composition and COD, BOD, DOC of the leachate-contaminated groundwater and O2 concentration in biogas indicated that the landfill site was between the methanogenic phase and air intrusion phase. However, BOD/COD ratio and H2S concentration in the biogas suggested that the landfill site is still active and the wastes contain readily biodegradable organic matter. The impact of the landfill site on the environment seems quite significant. In this case, and in other situations when the impact of a landfill site on the environment is high after the post-closure stage, the monitoring period should be extended.
Dorota Porowska. Assessment of a degree of geochemical maturation and activity of a closed landfill site in Poland. Environmental Earth Sciences 2016, 75, 1 -8.
AMA StyleDorota Porowska. Assessment of a degree of geochemical maturation and activity of a closed landfill site in Poland. Environmental Earth Sciences. 2016; 75 (4):1-8.
Chicago/Turabian StyleDorota Porowska. 2016. "Assessment of a degree of geochemical maturation and activity of a closed landfill site in Poland." Environmental Earth Sciences 75, no. 4: 1-8.
Dorota Porowska. POSSIBILITY OF THE USING OF INORGANIC CARBON ISOTOPES IN ASSESSMENT OF SURFACE WATER AND GROUNDWATER CONTAMINANTIONS. Inżynieria Ekologiczna 2016, 172 -187.
AMA StyleDorota Porowska. POSSIBILITY OF THE USING OF INORGANIC CARBON ISOTOPES IN ASSESSMENT OF SURFACE WATER AND GROUNDWATER CONTAMINANTIONS. Inżynieria Ekologiczna. 2016; (49):172-187.
Chicago/Turabian StyleDorota Porowska. 2016. "POSSIBILITY OF THE USING OF INORGANIC CARBON ISOTOPES IN ASSESSMENT OF SURFACE WATER AND GROUNDWATER CONTAMINANTIONS." Inżynieria Ekologiczna , no. 49: 172-187.
Chemical and isotopic analyses of groundwater from piezometers located around a reclaimed landfill in Otwock (Poland) were performed in order to trace the origin of dissolved inorganic carbon (DIC) in the groundwater. Due to differences in the isotopic composition of carbon from different sources, an analysis of stable carbon isotopes in the groundwater, together with the Keeling plot approach and a two-component mixing model allow us to evaluate the relative contributions of carbon from these sources in the groundwater. In the natural (background) groundwater, DIC concentrations and the isotopic composition of DIC (δ(13)CDIC) comes from two sources: decomposition of organic matter and carbonate dissolution within the aquifer sediments, whereas in the leachate-contaminated groundwater, DIC concentrations and δ(13)CDIC values depend on the degradation of organic matter within the aquifer sediments and biodegradation of organic matter stored in the landfill. From the mixing model, about 4-54% of the DIC pool is derived from organic matter degradation and 96-46% from carbonate dissolution in natural conditions. In the leachate-contaminated groundwater, about 20-53% of the DIC is derived from organic matter degradation of natural origin and 80-47% from biodegradation of organic matter stored in the landfill. Partial pressure of CO2 (P CO2) was generally above the atmospheric, hence atmospheric CO2 as a source of carbon in DIC pool was negligible in the aquifer. P CO2 values in the aquifer in Otwock were always one to two orders of magnitude above the atmospheric P CO2, and thus CO2 escaped directly into the vadose zone.
Dorota Porowska. Determination of the origin of dissolved inorganic carbon in groundwater around a reclaimed landfill in Otwock using stable carbon isotopes. Waste Management 2015, 39, 216 -225.
AMA StyleDorota Porowska. Determination of the origin of dissolved inorganic carbon in groundwater around a reclaimed landfill in Otwock using stable carbon isotopes. Waste Management. 2015; 39 ():216-225.
Chicago/Turabian StyleDorota Porowska. 2015. "Determination of the origin of dissolved inorganic carbon in groundwater around a reclaimed landfill in Otwock using stable carbon isotopes." Waste Management 39, no. : 216-225.
Dorota Porowska. POSSIBILITY OF USING CARBON ISOTOPES IN THE ASSESSMENT OF THE POLLUTION OF GAS PHASE IN ENVIRONMENTAL RESEARCH. Inżynieria Ekologiczna 2015, 44, 68 -73.
AMA StyleDorota Porowska. POSSIBILITY OF USING CARBON ISOTOPES IN THE ASSESSMENT OF THE POLLUTION OF GAS PHASE IN ENVIRONMENTAL RESEARCH. Inżynieria Ekologiczna. 2015; 44 ():68-73.
Chicago/Turabian StyleDorota Porowska. 2015. "POSSIBILITY OF USING CARBON ISOTOPES IN THE ASSESSMENT OF THE POLLUTION OF GAS PHASE IN ENVIRONMENTAL RESEARCH." Inżynieria Ekologiczna 44, no. : 68-73.
Dorota Porowska. GROUNDWATER SAMPLING METHODOLOGY AND METHODS TO ELIMINATE THE MOST COMMON MISTAKES DURING THE FIELDWORK. Inżynieria Ekologiczna 2015, 42, 28 -35.
AMA StyleDorota Porowska. GROUNDWATER SAMPLING METHODOLOGY AND METHODS TO ELIMINATE THE MOST COMMON MISTAKES DURING THE FIELDWORK. Inżynieria Ekologiczna. 2015; 42 ():28-35.
Chicago/Turabian StyleDorota Porowska. 2015. "GROUNDWATER SAMPLING METHODOLOGY AND METHODS TO ELIMINATE THE MOST COMMON MISTAKES DURING THE FIELDWORK." Inżynieria Ekologiczna 42, no. : 28-35.