Groundwater protection from cadmium contamination by permeable reactive barriers.
This work studies the reliability of an activated carbon permeable reactive barrier in removing cadmium from a contaminated shallow aquifer. Laboratory tests have been performed to characterize the equilibrium and kinetic adsorption properties of the activated carbon in cadmium-containing aqueous solutions. A 2D numerical model has been used to describe pollutant transport within a groundwater and the pollutant adsorption on the permeable adsorbing barrier (PRB). In particular, it has been considered the case of a permeable adsorbing barrier (PAB) used to protect a river from a Cd(II) contaminated groundwater. Numerical results show that the PAB can achieve a long-term efficiency by preventing river pollution for several months.
Di Natale
F
F
Dipartimento di Ingegneria chimica, Università di Federico II, P.le Tecchio, 80-80125 Naples, Italy. fdinatal@unina.it
Di Natale
M
M
Greco
R
R
Lancia
A
A
Laudante
C
C
Musmarra
D
D
D000327:Adsorption; D002104:Cadmium / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D009566:Nitrates / Q000737:chemistry; D010539:Permeability; D013054:Spectrophotometry, Atomic; D013816:Thermodynamics; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000517:prevention & control*; D014881:Water Supply / Q000032:analysis*
D009566:Nitrates; D014874:Water Pollutants, Chemical; D002104:Cadmium; C031618:sodium nitrate