BATCH SCALE STUDY OF PALLADIUM ENHANCED NANOSCALE ZERO VALENT IRON DECHLORINATION OF TETRACHLOROETHENE

Nanoscale zero valent iron (NZVI) may be able to rapidly dechlorinate and remediate chlorinated solvents in-situ. NZVI remedial applications have typically been limited to permeable reactive barriers (PRBs). Direct injection of NZVI into chlorinated solvent ground water contamination plumes may improve remedial effectiveness. NZVI mobility in the subsurface is typically limited due to colloidal movement through porous media. NZVI transport may be improved by palladium enhancement of NZVI. This study seeks to determine effectiveness of palladium enhanced NZVI under varying geochemical conditions and to establish parameters that may ultimately limit transport of palladium enhanced NZVI in the subsurface.