Nitrogen transformation and transport modeling in groundwater aquifers

Lee, Mee-Sun; Lee, Kang‐Kun; Hyun, Y.; Clement, T. Prabhakar; Hamilton, David P.

doi:10.1016/j.ecolmodel.2005.07.013

Cited by 108 publications

(72 citation statements)

References 33 publications

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“…Hydrogeochemical characterization of aquifers as a basis for simulating groundwater composition, weathering, retention processes, and transport could improve the above models; an example is the recent aquifer typology map for 11 European countries (Wendland et al, 2008). Further improvements include the description of the processing of nutrients and of labile dissolved organic C (e.g., Jardine et al, 1992;Lee et al, 2006) and particulate organic C and pyrite in order to estimate the availability of electron donors for the denitrification process. Continued N loading of groundwater could ultimately lead to depletion of the sediment of electron donors such as pyrite and a more limited attenuation of nitrate in groundwater .…”

Section: A F Bouwman Et Al: Nutrient Dynamics Transfer and Retentmentioning

confidence: 99%

Nutrient dynamics, transfer and retention along the aquatic continuum from land to ocean: towards integration of ecological and biogeochemical models

et al. 2013

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Abstract. In river basins, soils, groundwater, riparian zones and floodplains, streams, rivers, lakes and reservoirs act as successive filters in which the hydrology, ecology and biogeochemical processing are strongly coupled and together act to retain a significant fraction of the nutrients transported. This paper compares existing river ecology concepts with current approaches to describe river biogeochemistry, and assesses the value of these concepts and approaches for understanding the impacts of interacting global change disturbances on river biogeochemistry. Through merging perspectives, concepts, and modeling techniques, we propose integrated model approaches that encompass both aquatic and terrestrial components in heterogeneous landscapes. In this model framework, existing ecological and biogeochemical concepts are extended with a balanced approach for assessing nutrient and sediment delivery, on the one hand, and nutrient in-stream retention on the other hand.

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Section: A F Bouwman Et Al: Nutrient Dynamics Transfer and Retentmentioning

confidence: 99%

Nutrient dynamics, transfer and retention along the aquatic continuum from land to ocean: towards integration of ecological and biogeochemical models

et al. 2013

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“…Ammoniacal nitrogen has a potential to act as one of the dominant environmental pollutants produced from landfills containing putrescible waste and hence poses problems for the management of all landfills. It has frequently been described as the most common pollutant of groundwater, emanating from landfills at concentrations of greater magnitude than emission of other nitrogen forms (N-NO 3 , and N-NO 2 ) [7,[23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Ammonium Concentration and Migration in Groundwater in the Vicinity of Waste Management Site Located in the Neighborhood of Protected Areas of Warsaw, Poland

2016

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Abstract:The purpose of the present paper is to assess groundwater contamination by ammonium originating from the waste management site (including composting plant and the landfill) located in the vicinity of protected areas. In this paper, the impact of urban and industrial facilities adjacent to the landfill is also investigated. The analysis of ammonium concentration was carried out for selected piezometers and then the monitoring and laboratory tests results were referred to the Polish standards of groundwater quality. The content of the paper discusses the changes of ammonium concentration in time and space and presents potential reasons for these changes, especially resulting from the construction of the vertical bentonite barrier. The results show the significant decrease of ammonium concentration and progressive improvement of water quality observed in almost every piezometer after a few years since the vertical barrier has been installed. Furthermore, the paper provides statistical analyses of groundwater monitoring data from the period 1998-2015 in order to control the groundwater quality and assess the movement of contamination plume in the landfill area.

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“…Additionally, in case of Nitrogen gas saturation in the groundwater, it tends to migrate out of the saturated zone. In spite of the fact that denitrification takes place in saturated zone under anoxic conditions, oxic denitrification has been also observed (Lee et al 2006). In this case study, because of continuous discharge of wastewater for several decades, physical properties of this soil are different from a soil sample in an undisturbed area.…”

Section: Introductionmentioning

confidence: 75%

Assessment of nitrate contamination in unsaturated zone of urban areas: The case study of Tehran, Iran

Niasar

Ataie-Ashtiani

2008

Environ Geol

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Modeling fate of nitrogen in unsaturated and saturated zone is a complex process, which requires detailed geochemical data. Complexities of the process as well as data insufficiencies are two major issues, which make quantitative assessment of the problem more complicated. In this work, a lumped-parameter model (LPM) is proposed that has been evaluated for a data-limited case to study temporal and steady-state behavior of Nitrate and Ammonium in unsaturated zone. The concentration of components in the model are assumed as the depth-averaged concentrations, and dispersive fluxes have been neglected. The case study area is Tehran City aquifer, which is highly contaminated by domestic wastewater discharge into the groundwater. Three sources for Nitrogen contamination have been studied, namely domestic wastewater, park/recreational applications, and wet deposition. Results show that Nitrate production in the first few meters (\5 m) is quite large. To compare the model results with the measurements, error estimation analysis based on Vornoi map has been fulfilled. Finally, it is shown that there is a fairly good correlation coefficient between simulation and measurements, which approves the validity of the LPM.

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Nitrogen transformation and transport modeling in groundwater aquifers

Cited by 108 publications

References 33 publications

Nutrient dynamics, transfer and retention along the aquatic continuum from land to ocean: towards integration of ecological and biogeochemical models

Nutrient dynamics, transfer and retention along the aquatic continuum from land to ocean: towards integration of ecological and biogeochemical models

Ammonium Concentration and Migration in Groundwater in the Vicinity of Waste Management Site Located in the Neighborhood of Protected Areas of Warsaw, Poland

Assessment of nitrate contamination in unsaturated zone of urban areas: The case study of Tehran, Iran

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