Question

A team of environmentalists are removing volatile organic pollutants from soil by circulating air through the soil using pipes. Which remediation method are they using? A)air sparging B)natural attenuation C)soil vapor extraction D)bioventing
E)bioremediation

Answer 1

Answer: C) soil vapor extraction

Soil vapor extraction is the relevant approach that uses vacuum pressure to evaporate and remove the volatile and semi volatile organic contaminants present in the soil. The gas that evaporate from the soil is either treated so that it does not cause any ill effect to the environment or completely destroyed. It is a soil remediation process.