Field evidence for flow reduction through a zero-valent iron permeable reactive barrier

Richard Johnson, R. B. Thoms, R. O'Brien Johnson, T. Krug

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The combination of detailed multilevel ground water geochemistry samples, a natural-gradient tracer test, minislug tests, and a numerical flow and transport model was used to examine flow through a zero-valent iron permeable reactive barrier (PRB) installed to remove explosives from ground water. After 20 months of operation, the PRB continued to completely remove explosives from the ground water flowing through it. However, the data indicate that a portion of ground water flow was being diverted beneath the PRB. Ground water geochemistry was significantly altered by the PRB, and concentrations of some ions, including sulfate, carbonate, and calcium, were substantially reduced due to precipitation. Field data and numerical model results indicate that, after 20 months of operation, flow through the PRB was reduced to approximately one-third of its expected value.

Original languageEnglish (US)
Pages (from-to)47-55
Number of pages9
JournalGround Water Monitoring and Remediation
Volume28
Issue number3
DOIs
StatePublished - Jun 2008

Fingerprint

Groundwater geochemistry
reactive barrier
Groundwater
Iron
iron
Groundwater flow
groundwater
Data structures
Numerical models
Carbonates
Calcium
explosive
geochemistry
Ions
groundwater flow
calcium
tracer
sulfate
carbonate
ion

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Field evidence for flow reduction through a zero-valent iron permeable reactive barrier. / Johnson, Richard; Thoms, R. B.; O'Brien Johnson, R.; Krug, T.

In: Ground Water Monitoring and Remediation, Vol. 28, No. 3, 06.2008, p. 47-55.

Research output: Contribution to journalArticle

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