LNAPL saturation distribution under the influence of water table fluctuations using simplified image analysis method

Alazaiza, Motasem Y. D.; Ramli, Harris; Copty, Nadım K.; Sheng, Tan; Aburas, Maher Milad

doi:10.1007/s10064-019-01655-3

Cited by 21 publications

(13 citation statements)

References 28 publications

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“…Furthermore, sampling only offers information from one or a few chosen locations. Alazaiza et al [18] developed the SIAM to observe the saturation distributions of LNAPL and water in the partially saturated sand column under complex conditions in this study. The SIAM's theory is based on the Beer-Lambert law of light transmittance, which assumes a linear relationship between the average optical density, LNAPL, and water saturation (S o and S w , respectively).…”

Section: Simplified Image Analysismentioning

confidence: 99%

“…Experiments on the behavior of immiscible fluids in soils have been conducted by a number of researchers [15][16][17][18]. For monitoring fluid properties and movement in soil and groundwater, non-invasive techniques such as gamma ray, X-ray attenuation, and electrical conductivity probes have been used [19,20].…”

Section: Introductionmentioning

confidence: 99%

“…Although these studies have provided useful information on the fate and transport of NAPLs in porous media, they have some drawbacks, the most notable of which is that they do not allow for the observation of fluid migration under dynamic conditions and across the entire domain of interest [2,7]. Image analysis approaches such as light propagation visualization, light reflection method, spectral image analysis method, and simplified image analysis method (SIAM) have gained more attention from researchers because of the limitations [16,18,21].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, they observed that the capillary fringe thickness was depressed due to the influence of both infiltration and LNAPL volume. Alazaiza et al [18] applied the simplified image analysis method (SIAM) to investigate the saturation distributions of the LNAPL and water in the entire domain the influence of water table fluctuations. The authors concluded that the SIAM technique is an accurate and cost-effective tool for the visualization of the time-dependent NAPL/water movement in laboratory-scale experiments and quantifying dynamic changes in fluid saturation in porous media.…”

Section: Introductionmentioning

confidence: 99%

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Diesel Migration and Distribution in Capillary Fringe Using Different Spill Volumes via Image Analysis

Alazaiza

Maskari

Albahansawi

et al. 2021

Fluids

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Laboratory-scale column experimSents were conducted to assess the impact of different LNAPL volumes on LANPL migration behavior in capillary zone in porous media. Three different volumes of diesel (50 mL, 100 mL, and 150 mL) were released in different experiments using a 1D rectangular column filled with natural sand. The water table was set at 29 cm from the bottom of the column. The image analysis results provided quantitative time-dependent data on the LNAPL distribution through the duration for the experiments. Results demonstrated that the higher diesel volume (150 mL) exhibited the faster LNAPL migration through all experiments. This observation was due to the high volume of diesel as compared to other cases which provides high pressure to migrate deeper in a short time. In all experiments, the diesel migration was fast during the first few minutes of observation and then, the velocity was decreased gradually. This is due to pressure exerted by diesel in order to allow the diesel to percolate through the sand voids. Overall, this study proved that the image analysis can be a good and reliable tool to monitor the LNAPL migration in porous media.

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Section: Simplified Image Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Diesel Migration and Distribution in Capillary Fringe Using Different Spill Volumes via Image Analysis

Alazaiza

Maskari

Albahansawi

et al. 2021

Fluids

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“…The application of image analysis techniques can allow us to have a view of the behavior of the injected particles and it can also allow for the application of the basic principles of dispersion theory for a quantitative and not only qualitative evaluation of the macroproperties of the motion of the ensemble in a saturated porous medium with known characteristics. In recent years, several laboratory experiments have used image analysis (IA) techniques that permit, through the use of specific procedures, the assessment of parameters such as velocity and distribution in the test section without the use of invasive instruments [33,[44][45][46][47][48][49][50]. This paper, therefore, submits a specific procedure, performed and calibrated ad hoc, with the aim of obtaining information about mobility (path and velocity v x and v y ) using distribution curves representing the behavior in time of injected nZVI plume.…”

Section: Introductionmentioning

confidence: 99%

Mobility of nZVI in a Reconstructed Porous Media Monitored by an Image Analysis Procedure

Andrei

Sappa

Boni

et al. 2021

Water

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Zero-valent iron nanoparticle (nZVI) technology has been found to be promising and effective for the remediation of soils or groundwater. However, while nanoparticles are traveling through porous media, they can rapidly aggregate, causing their settling and deposition. When nZVI are injected in the groundwater flow, the behavior (mobility, dispersion, distribution) is unknown in groundwater, causing the use of enormous quantities of them if used at the field scale. In this paper, a laboratory experiment was carried out with groundwater flow in a two-dimensional, laboratory-scale tank to assess the nanoparticle behavior by means of an image analysis procedure. A solution of zero-valent iron nanoparticles, Nanofer 25S particles, were used and glass beads were utilized as porous medium. The laboratory experiment included the use of a digital camera for the acquisition of the images. The image analysis procedure was used to assess the behavior of nZVI plume. A calibration procedure and a mass balance were applied to validate the proposed image analysis procedure, with the hypothesis that nanoparticles would be uniformly distributed in the third dimension of the tank (thickness). The results show that the nanoparticles presented small dispersive effects and the motion was strongly influenced from the higher weight of them with respect to the water. Therefore, the results indicate that nanoparticles have an own motion not strongly influenced by the fluid flow but more determined from the injection phase and gravity. The statistical elaborations show that the nZVI plume did not respond to the classical mechanisms of the dispersion.

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A Review on Simplified Image Analysis Method for Measuring LNAPL Saturation Under Groundwater Table Fluctuation

Almaliki,

Ramli

2024

Lecture Notes in Civil Engineering

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LNAPL saturation distribution under the influence of water table fluctuations using simplified image analysis method

Cited by 21 publications

References 28 publications

Diesel Migration and Distribution in Capillary Fringe Using Different Spill Volumes via Image Analysis

Diesel Migration and Distribution in Capillary Fringe Using Different Spill Volumes via Image Analysis

Mobility of nZVI in a Reconstructed Porous Media Monitored by an Image Analysis Procedure

A Review on Simplified Image Analysis Method for Measuring LNAPL Saturation Under Groundwater Table Fluctuation

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