Hydrodynamic Decontamination of Groundwater and Soils Using ZVI

Polluted aquifers can be decontaminated using either ZVI (zero valent iron) permeable reactive barriers (PRB) or injected ZVI. The placement of within the aquifer may take several decades to remediate contaminant plume. Remediation is further complicated by acting as an adsorbent remove some pollutants, while for other it acts a remediation catalyst. This study investigates alternative decontamination approach PRB construction n-Fe0 injection. reconstructs potentiometric surface containing contaminant. reconstruction confines plume stationary, doughnut shaped hydrodynamic mound. Contaminated water from mound abstracted, decontaminated, and then reinjected, until all confined decontaminated. At this point, allowed dissipate into surrounding aquifer. evaluated potential use in treating following: (i) immiscible liquid plumes; (ii) miscible ionic solute (iii) naturally contaminated soils; (iv) salinized soils. results indicate that approach, when compared with injection accelerate decontamination, reducing overall amount required.