New Gaussian Plume Equation for the Impacts of Dust Storms on Radionuclide Transport

Al-Zghoul, Bashar M.; Abu-El-Sha’r, Wa’il Y.

doi:10.4209/aaqr.2019.09.0433

Cited by 4 publications

(3 citation statements)

References 27 publications

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“…Migration of colloidal particles, which typically range in size from 10 nm to 10 μm, within the subsurface environment is a topic of significant interest. Important examples include the transport of pathogens (e.g., viruses and bacteria), heavy metals (e.g., lead, mercury, and cadmium), organic colloids (e.g., pesticides, herbicides, and pharmaceuticals), and engineered nanoparticles (ENPs) through groundwater, as it can impact water quality and human health (Al‐Zghoul & Abu‐El‐Sha'r, 2020; Deb & Chakma, 2022; Klaine et al., 2008; Petosa et al., 2010). Transport of colloids relative to other substances is complex due to a variety of physio‐chemical interactions between the colloids and porous media surfaces that can cause particles to be retained on solid boundaries.…”

Section: Introductionmentioning

confidence: 99%

Effects of Initial Injection Condition on Colloid Retention

Al‐Zghoul,

Volponi,

Johnson

et al. 2024

Water Resources Research

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This study investigates the impact of initial injection conditions on colloid transport and retention in porous media. Employing both uniform and flux‐weighted distributions for the initial colloid locations, the research explores diverse flow scenarios, ranging from simple Poiseuille flow to more complex geometries. The results underscore the pivotal role the injection mode plays on the shape of colloid retention profiles (RPs), particularly those that display anomalous non‐exponential decay with distance. Broadly, uniform injection yields multi‐exponential profiles, while flux‐weighted injection can lead to nonmonotonic profiles in certain conditions. The study identifies preferential flow paths as a key factor in producing nonmonotonic RPs. Notably, variations in fluid velocity, colloid size, and ionic strength affect attachment rates near the inlet but do not significantly alter the qualitative transition between multi‐exponential and nonmonotonic profiles. The study emphasizes that the chosen injection mode dictates retention profile shapes, highlighting its crucial role in porous media colloid transport. These insights provide a possible partial explanation of previously observed anomalous transport behaviors, urging consideration of injection conditions in interpretations of experiments, where they can be difficult to accurately control and measure with high precision.

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Section: Introductionmentioning

confidence: 99%

Effects of Initial Injection Condition on Colloid Retention

Al‐Zghoul,

Volponi,

Johnson

et al. 2024

Water Resources Research

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“…It has been shown that in large-scale nuclear accidents, the most important thing is the correct assessment of doses and classification of victims [3]. In this regard, studies on modeling and assessment of contamination zones during radioactive exposure are important [4][5][6][7][8][9]. In the work [4], pollution modeling was carried out using the European Union nuclear emergency response system RODOS and CALPUFF model, as well as the Weather Research and Forecasting model.…”

Section: Introductionmentioning

confidence: 99%

Assessment of radioactive contamination level of environment in case of accident at nuclear power plant

Biliaiev

Русакова

Dziuba

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The accidents at nuclear power plants pose a particular threat to the population and the environment. Accidental emissions at nuclear power plants can cause long-term radioactive pollution of the environment, and the elimination of such pollution can take years. For practice, it is very important to predict the intensity and size of radioactive contamination zones for various scenarios of extreme situations at the nuclear power plants. Such a forecast will identify the most vulnerable areas and develop a response strategy to the situation that has arisen. A numerical model has been built that allows to quickly predict the scale of radioactive contamination of the territory during an emergency release at a nuclear power plant. The model is based on the application of implicit difference schemes for the numerical integration of the equation of convective-diffusion transport of impurities in the atmosphere. The developed model is characterized by the calculation speed. The results of the computational experiment are presented.

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“…But in practice, predicting of dust pollution zones of atmospheric air is carried out for convection conditions. It is also important to note that the methods of calculating the concentration fields of impurities used in practice are developed specifically for such weather conditions -for example, the Gaussian model or the OND-86 model [1,2,[7][8][9][10]. But it is known that in adverse weather conditions -during IOP Publishing doi:10.1088/1755-1315/1156/1/012016 2 inversion, the surface layer of the atmosphere have the highest concentrations of impurities [1].…”

Section: Introductionmentioning

confidence: 99%

Prediction of atmospheric air pollution near a coal stack in adverse weather conditions

Biliaieva

Berlov

Kozachyna

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Coal piles on the territory of enterprises are long-term sources of dust pollution of atmospheric air. Forecasting the level of dust pollution of the air for such objects is carried out, as a rule, for convection conditions. But during inversion, very high concentrations of dust can occur on industrial sites. The task of assessing the level of dust pollution of atmospheric air at an industrial site during dust emission in conditions of inversion from a coal stack is considered. A three-dimensional equation of convective-diffusion dispersion of contamination in atmospheric air, compatible with the approach of Prof. Berliand M. on determining the value of the vertical diffusion coefficient in the surface layer of the atmosphere for the case of inversion, to model dispersion of dust from a coal stack under inversion conditions is used. Numerical integration of the modeling equation of convective-diffusion transport of contamination is carried out on the basis of the splitting method compatible with the use of a locally one-dimensional finite-difference scheme. The results of a computational experiment to determine dust pollution zones at the Prydniprovsk thermal power station are presented.

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New Gaussian Plume Equation for the Impacts of Dust Storms on Radionuclide Transport

Cited by 4 publications

References 27 publications

Effects of Initial Injection Condition on Colloid Retention

Effects of Initial Injection Condition on Colloid Retention

Assessment of radioactive contamination level of environment in case of accident at nuclear power plant

Prediction of atmospheric air pollution near a coal stack in adverse weather conditions

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