Performance of granular dead anaerobic sludge as permeable reactive barrier for containment of lead from contaminated groundwater

This study investigates the performance of granular dead anaerobic sludge (GDAS) bio-sorbent as permeable reactive barrier (PRB) in removing lead from a contaminated shallow groundwater. Batch tests have been performed to characterize the equilibrium sorption properties of the GDAS and sandy soil in...

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Bibliographic Details
Published in:Desalination and water treatment 2015-10, Vol.56 (2), p.327-337
Main Authors: Sulaymon, Abbas H., Faisal, Ayad A.H., Abd Ali, Ziad T.
Format: Article
Language:English
Subjects:
Barriers
Computer programs
Computer simulation
Contaminants
Finite element analysis
Granular dead anaerobic sludge
Groundwater
Groundwater pollution
Lead
Mathematical analysis
Mathematical models
Permeable reactive barrier
Permeable reactive barriers
Pollution prevention
Sandy soils
Sludge
Sorption
Transport
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Summary:This study investigates the performance of granular dead anaerobic sludge (GDAS) bio-sorbent as permeable reactive barrier (PRB) in removing lead from a contaminated shallow groundwater. Batch tests have been performed to characterize the equilibrium sorption properties of the GDAS and sandy soil in lead-containing aqueous solutions. A 1D advection–dispersion equation, solved by computer solutions Multiphysics 3.5a software which is based on finite element method, has been used to simulate the equilibrium transport of Pb+2 ions within groundwater. This equation has taken into account the pollutant sorption onto the GDAS and sandy soil which is performed by Langmuir equation. Numerical results proved that the PRB plays a potential role in the restriction of the contaminant plume migration. These results also show that the thicker PRB is better than the thinner ones in lead treatment and the barrier starts to saturate with contaminant as a function of the travel time. A good agreement between the predicted and experimental results was recognized with root mean square error not exceeded the 0.0499.
ISSN:1944-3986
1944-3994
1944-3986
DOI:10.1080/19443994.2014.942376