Methods of Soil Treatment

Two approaches are commonly employed to treat contaminated soil. The first involves a phase transfer. In this approach, the contaminant(s) is moved from one phase (either solid, liquid, or gas) into another. The second approach involves destruction or transformation of the contaminant(s). This approach is more advantageous because the contaminants are broken down into harmless products as opposed to being simply removed through phase transfer (e.g., from liquid phase to gaseous phase). 

The two soil treatment approaches can be utilized by incorporating a number of technologies, including (1) high-low temperature thermal treatments, (2) radio fre- 

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All ex situ soil treatment methods involve a two-step approach soil excavation and aboveground treatment of the excavated soil. The differences in the various ex situ excavation/treatment methods for soil remediation lie only in the methods of soil treatment aboveground, such as soil washing plus extraction, and slurry biodegradation. 

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