Experimental and simulation study of the restoration of a thallium (I)-contaminated aquifer by Permeable Adsorptive Barriers (PABs)

The Science of the Total Environment
Giovanni Francesco SantonastasoDino Musmarra

Abstract

Permeable Adsorptive Barriers (PABs), filled with a commercial activated carbon, are tested as a technique for the remediation of a thallium (I)-contaminated aquifer located in the south of Italy. Thallium adsorption capacity of the activated carbon is experimentally determined through dedicated laboratory tests, allowing to obtain the main modelling parameters to describe the adsorption phenomena within the barrier. A 2D numerical model, solved by using a finite element approach via COMSOL Multi-physics®, is used to simulate the contaminant transport within the aquifer and for the PAB design. Investigations are carried out on an innovative barrier configuration, called Discontinuous Permeable Adsorptive Barrier (PAB-D). In addition, an optimization procedure is followed to determine the optimum PAB-D parameters, and to evaluate the total costs of the intervention. A PAB-D made by an array of wells having a diameter of 1.5m and spaced at a distance of 4m from each other, is shown to be the most cost-effective of those tested, and ensures the aquifer restoration within 80years. The simulation outcomes demonstrate that the designed PAB-D is an effective tool for the remediation of the aquifer under analysis, since the contaminant...Continue Reading

Citations

Feb 26, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Simeone ChianeseStefano Salvestrini
Apr 9, 2020·Nanomaterials·Fabian Arias AriasLorenzo S Caputi
Mar 23, 2019·Materials·Ewelina Weidner, Filip Ciesielczyk
Oct 18, 2020·International Journal of Environmental Research and Public Health·Mir Waqas AlamMohd Farhan
Aug 21, 2021·Journal of Hazardous Materials·Jinni YaoHongxia Liu

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