2003
DOI: 10.1111/j.1745-6584.2003.tb02383.x
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Long‐Term Performance of Permeable Reactive Barriers Using Zero‐Valent Iron: Geochemical and Microbiological Effects

Abstract: Geochemical and microbiological factors that control long-term performance of subsurface permeable reactive barriers were evaluated at the Elizabeth City, North Carolina, and the Denver Federal Center, Colorado, sites. These ground water treatment systems use zero-valent iron filings (Peerless Metal Powders Inc.) to intercept and remediate chlorinated hydrocarbon compounds at the Denver Federal Center (funnel-and-gate system) and overlapping plumes of hexavalent chromium and chlorinated hydrocarbons at Elizabe… Show more

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Cited by 210 publications
(179 citation statements)
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“…Although encouraging treatment efficiency has been documented (Gu et al, 1998;Morrison et al, 2001;Su and Puls, 2003), reactions between ZVI and groundwater constituents causing ZVI corrosion and subsequent secondary mineral precipitation contribute to long term performance reduction of ZVI PRBs (Liang et al, 2003;Slater and Binley, 2003;Wilkin et al, 2003;Jin Suk et al, 2009). Carbonate minerals (often precipitated concurrent with iron oxides (Mackenzie et al, 1999;Phillips et al, 2000;Liang et al, 2003)), are known to significantly impact ZVI reactivity and hydraulic efficiency in systems with frequently encountered high carbonate groundwater conditions through surface passivation and pore clogging (Agrawal and Tratnyek, 1996;Phillips et al, 2000;Liang et al, 2003;Slater and Binley, 2003;Wilkin et al, 2003;Jeen et al, 2006;Jeen et al, 2007;Jin Suk et al, 2009). …”
Section: Introductionmentioning
confidence: 99%
“…Although encouraging treatment efficiency has been documented (Gu et al, 1998;Morrison et al, 2001;Su and Puls, 2003), reactions between ZVI and groundwater constituents causing ZVI corrosion and subsequent secondary mineral precipitation contribute to long term performance reduction of ZVI PRBs (Liang et al, 2003;Slater and Binley, 2003;Wilkin et al, 2003;Jin Suk et al, 2009). Carbonate minerals (often precipitated concurrent with iron oxides (Mackenzie et al, 1999;Phillips et al, 2000;Liang et al, 2003)), are known to significantly impact ZVI reactivity and hydraulic efficiency in systems with frequently encountered high carbonate groundwater conditions through surface passivation and pore clogging (Agrawal and Tratnyek, 1996;Phillips et al, 2000;Liang et al, 2003;Slater and Binley, 2003;Wilkin et al, 2003;Jeen et al, 2006;Jeen et al, 2007;Jin Suk et al, 2009). …”
Section: Introductionmentioning
confidence: 99%
“…Calcite precipitation in porous media has broad applications in geotechnical engineering for soil strengthening (DeJong et al 2006(DeJong et al , 2010Whiffin et al 2007) and in environmental studies for the sequestration of heavy metals (Sturchio et al 1997;Cheng et al 1999), radionuclides (Fujita et al 2004;Mitchell & Ferris 2005), and CO 2 in geological formations Xu et al 2003). However, calcite precipitation can also have undesirable effects such as the decrease of the permeability of reactive barriers for the remediation of aquifers (Wilkin et al 2003;Scheibe et al 2006;Jeen et al 2007).…”
Section: Introductionmentioning
confidence: 99%
“…Such a situation may be encountered in a reactive permeable walls as the hydraulic conductivity decreases as result of mineral precipitations. 29,30 Effect of the additives in open systems Figure 2 summarizes the results of the U release from the rock for 70 days in the airhomogenised batch experiments for systems I (reference), IV (dolomite) and V (pyrite) (see Tab 2). The results can be summarized as follows:…”
Section: Effect Of the Additives In Closed Systemsmentioning
confidence: 99%