Ground water remediation of chromium using zero-valent iron in a permeable reactive barrier
A series of laboratory experiments were performed to elucidate the chromium transformation and precipitation reactions caused by the corrosion of zero-valent iron in water-based systems. Reaction rates were determined for chromate reduction in the presence of different types of iron and in systems with iron mixed with aquifer materials. Various geochemical parameters were measured to confirm the proposed reactions. Laboratory experiments were scaled up to pilot and full-scale field demonstrations. Intensive geochemical sampling in the field tests corroborate laboratory results and successfully demonstrate the effectiveness of this innovative in situ approach to remediate chromate-contaminated ground water using a permeable reactive barrier composed of zero-valent iron.
- Research Organization:
- National Risk Management Research Lab., Ada, OK (United States); Powell and Associates Science Services, Las Vegas, NV (United States); Waterloo Univ. Ontario (Canada)
- OSTI ID:
- 643171
- Report Number(s):
- PB-98-155088/XAB; EPA-600/A-98/108; TRN: 82290773
- Resource Relation:
- Other Information: PBD: 1998
- Country of Publication:
- United States
- Language:
- English
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