Geotechnical behaviour of low-permeability soils in surfactant-enhanced electrokinetic remediation.

摘要: Electrokinetic processes provide the basis of a range very interesting techniques for remediation polluted soils. These consist application current field in soil that develops different transport mechanisms capable mobilizing several types pollutants. However, use these could generate nondesirable effects related to geomechanical behavior soil, reducing effectiveness processes. In case soils with plasticity index higher than 35, an excessive shrinkage can be observed test. For this reason, continued evaporation takes place sample top lead development cracks, distorting electrokinetic regime, and consequently, operation. On other hand, when analyzing silty soils, surroundings injection surfactant wells, high seepages generated give rise piping article methods are described allow reduction, or even eliminate, both problems.