Permeable Adsorbing Barriers for groundwater remediation from hexavalent chrome pollution

Michele Di Natale, Roberto Greco and Dino Musmarra

International Journal of Environmental Technology and Management, 2007, vol. 7, issue 1/2, 39-55

Abstract: Chrome ions removal from aqueous solutions by adsorption onto an activated carbon (Aquacarb 207EAâ„¢ by Sutcliffe Carbon) and a South African coal char is illustrated. Different chrome concentrations, pH and salinity levels are tested. Experimental data are interpreted by means of a Langmuir approach-based model. Results show that a Permeable Adsorbing Barrier (PAB) made of Aquacarb 207EAâ„¢ can protect a shallow aquifer from topsoil Cr^(VI) leaching even during heavy rainfalls and that Cr^(VI) is desorbed in dry periods, when clean water crosses the PAB, without any dangerous release in the aquifer.

Keywords: groundwater remediation; heavy metals; permeable reactive barriers; adsorption; soil contamination; hexavalent chrome pollution; shallow aquifers; aquifer protection; leaching; environmental technology. (search for similar items in EconPapers)
Date: 2007
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