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ISCO'S LONG-TERM IMPACT ON AQUIFER CONDITIONS AND MICROBIAL ACTIVITY
Citation:
LUHRS, R. C., R. W. LEWIS, AND S. G. HULING. ISCO'S LONG-TERM IMPACT ON AQUIFER CONDITIONS AND MICROBIAL ACTIVITY. Presented at 11th International Conference on Advanced Oxidation Technologies for Treatment of Water, Air, and Soil, Chicago, IL, October 23 - 27, 2005.
Impact/Purpose:
To inform the public.
Description:
Potential for lasting negative environmental effects has clouded remediation programs using permanganate and other oxidants. A major concern about using In-Situ Chemical Oxidation (ISCO) for remediation of CVOCs is that application of strong oxidants to subsurface systems may permanently inhibit the native microbial populations and hinder long-term biodegradation of contaminants after oxidation injections were completed. This is an important concern because natural attenuation is anticipated to play an important role with any in-situ technology, including ISCO. ISCO using permanganate has been deployed at numerous sites since its earliest application in the late 1990’s. While many laboratory and field studies have examined the short-term effects of these oxidation treatments on the aquifer, few have evaluated the long-term effects.