The International Information Center for Geotechnical Engineers

Soil Remediation Techniques: Examination of In Situ Chemical Oxidation


5. Advantages of ISCO Technique

In situ chemical oxidation can be advantageous in multiple aspects dependending on the site being remediated. It can be applied to eliminate a wide variety of contaminants including aqueous, sorbed, and non-aqueous contaminants. Since this process is relatively fast and can occur in situ, it can be at a lower cost than other remedial technologies because there is no need for the removal of soil. ISCO has the ability to enhance mass transfer such as through heat from H2O2 reactions. This generated heat can increase reaction rates, and microbial activity and therefore efficiency. These characteristics make this method useful and highly advantageous for large areas. 

Since ISCO does not generate large amounts of waste, this reduces contaminant exposure, time, and costs because disposal or treatment is minimal (Interstate Technology and Regulatory Council, 2005).  ISCO technology is favorable over other remedial techniques in that it can be effective in treated Chlorinated Alkenes and chlorinated phenols, soil with low oxidant demand, and aerobic aquifers, all of which can be a problem for technologies requiring reducing conditions. 


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