The possible application of two environmental remediation technologies – soil washing and photocatalysis – to remove and decompose various aromatic pollutants present in excavated soils of a contaminated industrial site has been investigated. Aqueous solutions containing the non-ionic surfactant Brij 35 were used to extract the contaminants from the soil samples. The photocatalytic treatment of the obtained washing wastes, performed in the presence of TiO2 suspensions irradiated with simulated sunlight, showed a slow abatement of the toxic compounds due to the relevant concentrations of organics in the waste. A neat improvement of the process performances, obtained by operating in the presence of added potassium peroxydisulfate, suggests a feasible treatment route.

Removal and degradation of aromatic compounds from a highly polluted site by coupling soil washing with photocatalysis

FABBRI, DEBORA;BIANCO PREVOT, Alessandra;ZELANO, Vincenzo;GINEPRO, Marco;PRAMAURO, Edmondo
2008

Abstract

The possible application of two environmental remediation technologies – soil washing and photocatalysis – to remove and decompose various aromatic pollutants present in excavated soils of a contaminated industrial site has been investigated. Aqueous solutions containing the non-ionic surfactant Brij 35 were used to extract the contaminants from the soil samples. The photocatalytic treatment of the obtained washing wastes, performed in the presence of TiO2 suspensions irradiated with simulated sunlight, showed a slow abatement of the toxic compounds due to the relevant concentrations of organics in the waste. A neat improvement of the process performances, obtained by operating in the presence of added potassium peroxydisulfate, suggests a feasible treatment route.
CHEMOSPHERE
71
59
65
FABBRI D; BIANCO PREVOT A; ZELANO V; GINEPRO M; PRAMAURO E.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2318/104388
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