A study on control of contaminant transport through the soil using equal double sheet piles

Armanyous, Asaad M.; Ghoraba, Shimaa M.; Rashwan, I. M. H.; Dapaon, Mohamed A.

doi:10.1016/j.asej.2015.11.009

Cited by 10 publications

(11 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results of the current research proved consistent with several studies devoted to the use of barrier walls to investigate the contaminant fate and transport based on either experimental or numerical techniques (e.g., Armanyous et al., 2016; Basha et al., 2009; Mansour et al., 2018; Shaeshaa et al., 2018). This study, however, addressed appraising the integrated use of both techniques where the results agreed well.…”

Section: Discussionsupporting

confidence: 89%

“…Vertical sheet piles were simulated using the GEOSTUDIO 2004 (Basha, Al-Nimr, Rashwan, & Gabr, 2009) and SEEP/W and CTRAN/W (Eltarabily & Negm, 2015), considering point source pollution at a constant rate of two-dimensional flow in a homogeneous porous media. Equal double sheet piles at different distances between the two sheet piles under variable heads were studied by applying the MODFLOW and MT3DMS (Armanyous, Ghoraba, Rashwan, & Dapaon, 2016). Most of the results disclosed that the effect of the soil physical properties on the migration process is more significant compared to the varying heads.…”

Section: Introductionmentioning

confidence: 99%

“…Several laboratory studies used the sandbox device to validate and verify their numerical models (Armanyous et al, 2016;Basha et al, 2009), to estimate pollutant transport parameters for a tropical sand (Ojuri & Ola, 2010), to study the flow net, to estimate values of uplift pressure underneath a hydraulic structure, and to determine the best inclination angle of the cutoff (45°) in order to reduce both the uplift pressure and the quantity of seepage (Alghazali & Alnealy, 2015). A combination of flow barrier and freshwater injection in unconfined coastal aquifer systems, when simulated using the sandbox, proved valid to force the saltwater to retreat with a greater repulsion ratio than either of them separately (Armanuos, Ibrahim, Mahmood, Takakura, & Yoshimura, 2019).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

Mostafa

Gado

Masoud

et al. 2020

Water Environment Research

View full text Add to dashboard Cite

The groundwater contamination and its impacts on the hydrologic systems and society are critical environmental concerns in the world. This research presents insights from the numerical (SEEP/W and CTRAN/W) and the experimental (sandbox model) analyses of the use of double vertical barrier walls for groundwater protection. The main objective was to evaluate contaminant transport under the effect of several variables. The arrival time increases with increasing the distance between the pollutant source and the first wall, first wall depth of penetration, the distance between the two walls and also increases at smaller hydraulic head differences, and lower conductivities. Furthermore, using double barrier walls would significantly reduce contaminant concentration at the downstream area. This control is most significant when the depth of first wall penetration is larger than that of the second wall. Results proved consistent with several similar studies and advantageous over many of them by the integrated use of both techniques with more variable parameters evaluated. © 2020 Water Environment Federation • Practitioner points • The research will introduce insights from the effect of using double barrier walls on the hydraulic control of contaminant transport. • The effect of several variables on the contaminant arrival time and concentration is investigated. • Using double barrier walls has a significant impact on contamination transport through the soil. • This control is most significant when the penetration depth of the first wall is larger than that of the second.

show abstract

Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

Mostafa

Gado

Masoud

et al. 2020

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…Thus, an efficient tool to protect GW and SW resources from pollution is urgently needed. In this context, the hydraulic control of contaminant migration represents one of the most common tools for the management, planning, and protection of GW and SW resources (Armanyous et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Several physical techniques have been used to control (i.e., restrict, stop, contain, or redirect) the migration of contaminants through porous fields. In this respect, the effects of vertical barrier walls (BWs) and/or extraction wells on the hydraulic control of contaminated GW have been extensively investigated by many researchers (Armanyous et al, 2016;Basha et al, 2012;Guglielmetti and Butler, 1997;Nasr et al, 2003). However, despite the large number of reported studies, the process of hydraulically controlling the migration of contaminants through porous fields is still somewhat immature from an engineering perspective, as most of the abovementioned reports involved laboratory-scale experiments conducted under very limited conditions.…”

Section: Introductionmentioning

confidence: 99%

Retarding contaminant migration through porous media using inclined barrier walls

Allam

Helal

Mansour

2019

Journal of Hydrology and Hydromechanics

View full text Add to dashboard Cite

This study aims to assess the abilities of inclined barrier walls (BWs) to retard the migration of contaminants through porous media. Four cases of BW arrangements were considered, including a single inclined BW (BW1) and two adjacent BWs (BW1 and BW2) with different combinations of inclination ratios (i.e., I1 = θ1 /90° and I2 = θ2 /90°). Furthermore, the effect of the distance (L) between the contamination source and BW1 on the migration time (T) was evaluated. A numerical model (GeoStudio) containing two modules (SEEP/W and CTRAN/W) was used. The model proved its reliability to simulate contaminant migration through the porous media, where the normalized objective function values between the simulated and analytical results were 0.02 and 0.04 for the discharge of seepage and concentration of contamination, respectively. The results demonstrated that the migration time was strongly influenced by the inclination ratios of the BWs. Three-dimensional regression analysis was applied to demonstrate the combined effect of the inclination ratio, L and BW arrangements on T.

show abstract

Experimental evaluation of self‐remediation mechanism by groundwater flow in unconfined aquifers

Mostafazadeh

Kilanehei

Hassanlourad

2020

Water Environment Research

View full text Add to dashboard Cite

The main goal of this study is to investigate the effect of soil properties such as permeability on the dispersion and movement of a water dissolved contaminant in three types of soil in saturated and 2D conditions. The experimental modeling was conducted using a constructed sand box. In order to evaluate the effect of soils particle size on the distribution and self-remediation of the contaminant, three types of soil, as coarse, medium, and fine-grained sand were used. Results of experiments showed that, at the first 25% of the test time, the contaminated area reduction rate in all three specimens varies significantly, so that for the medium and coarse sand, it is 2.2 and 3 times that of fine sand, respectively. The contaminant width reduction at the first 25% of the test time was 5%, 6%, and 35% for the fine, medium, and coarse sand, respectively, while the contaminant length reduction was 13%, 18%, and 37% for the fine, medium, and coarse sand, respectively. In addition, by comparing the contaminant movement in the saturated and semi-saturated areas, it was observed that the longitudinal and transverse movement of the contaminant under the water level are almost 2.5 times of the semisaturated area. © 2020 Water Environment Federation • Practitioner points• Reduction rate of solution area in fine, medium and coarse-grained sample are nearly convex, linear and concave-shaped, respectively. • The remediation process in saturated zones is implemented in both directions with higher intensity in a shorter time than unsaturated zones. • In the strip formed plumes, the volume of the self-remediation is proportional to the time intervals during the test. • In the elliptic masses the self-purification amount is lower at the beginning, due to the small cross-section ending of the contamination mass.

show abstract

A study on control of contaminant transport through the soil using equal double sheet piles

Cited by 10 publications

References 4 publications

Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

Numerical and experimental analyses of the use of double vertical barrier walls for groundwater protection

Retarding contaminant migration through porous media using inclined barrier walls

Experimental evaluation of self‐remediation mechanism by groundwater flow in unconfined aquifers

Contact Info

Product

Resources

About