WIT Press


Remediation Of Trichloroethylene By Zero-valent Iron Permeable Reactive Barriers

Price

Free (open access)

Volume

70

Pages

10

Published

2004

Size

307 kb

Paper DOI

10.2495/BF040131

Copyright

WIT Press

Author(s)

M.C. Zanetti, S. Fiore & G. Genon

Abstract

Trichloroethylene (TCE), belonging to the class of Dense Non-Aqueous Phase Liquids (DNAPLs), is a contaminant which is very persistent and widespread in groundwater because of its massive industrial use in past decades (i.e. in the metallurgical, textile and dye production industries). Among the in situ remediation technologies for the recovery of groundwaters polluted by chlorinated solvents, zero-valent iron Permeable Reactive Barriers (PRBs) have a primary importance; this technique, developed in Canada in the nineties, is based on the reductive action of zero-valent iron in a dechlorination process. The PRB is set perpendicularly to the groundwater flow direction, and chlorinated solvents are converted to non-toxic products, such as alkanes and alkenes, through various reaction pathways. In this wo

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