Mechanochemical Treatment of Contaminated Marine Sediments for PCB Degradation
F. Cangialosi, G. Intini, L. Liberti, D. Lupo, M. Notarnicola and T. Pastore
Department Environmental Engineering and Sustainable Development, Technical University of Bari,
v.le Turismo 8, 74100 Taranto (Italy)
E-mail: f.cangialosi@poliba.it
Pages: 147-156
Abstract
Results of a laboratory investigation aimed at determining technical efficiency as well as kinetics of chemical degradation of PCBs contaminating marine sediments by mechanochemical treatment with NaBH4 are presented. Optimization of operating conditions allowed PCBs degradation to be achieved in very effective (>98 %) and fast (<30 min) manner. A kinetic approach to PCBs degradation accounting for variation of reaction rates for different PCB congeners was developed and a mathematical model useful for scaling-up MC treatment was convincingly achieved.
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