Thermal desorption is a physical separation process that does not involve the thermo-destruction of organic compounds but rather their volatilisation from the contaminated materials (soil, sludge, sediment).
The contaminated terrain is heat-treated, at temperatures of between 200°C and 600°C, to convert the water and the organic pollutants it contains into gaseous form. Subsequently, the now-airborne contaminants are then transported to a special treatment section with the application of either a gas or a vacuum system.
Source: Courtesy of Ambiente, an Eni Group Company

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