Research Progress of Surfactants Remediation in Contaminated Soils

Eluent selection is the restrictive element in the leaching and extraction restoration techniques. Surfactant as a kind of eluent, it received extensive attention for removing organic pollutants and heavy metals at the same time. Numerous studies had shown that surfactant can remove pollutants from the soil effectively. It has a better removal effect on soil organic matter and heavy metals. Function of surfactant for remediation of non-aqueous phase liquids (NAPLs) are mainly reflected in the Surfactant reduces the liquid - solid tension, when the concentration increased to above the critical micelle concentration, organic in the surfactant solution greatly improved and the pollutants cleared away, while ion exchange, chemical complexation and sorption are function of surfactants for remediation of soils contaminated by heavy metals.