Surfactant assisted removal of Cu(II), Cd(II) and Pb(II) from contaminated soils

Abstract

The study deals with the removal of residual contaminants Cu(II), Cd(II) and Pb(II) from soil using surfactants sodium dodecyl sulfate (SDS), sodium dioctyl sulfosuccinate, and Triton x-100. Surfactants were used with and without chelating agent ethylenediaminetetraacetic acid (EDTA). SDS (10 mM) was the most effective surfactant for removing metals. Replacing distilled water with SDS enhanced metal removal by the factor of 5.5, 28.8, and 29.1 for Cu(II), Cd(II), and Pb(II), respectively. SDS with EDTA was efficient in removing metals. Interaction of metal ions with respect to adsorption and desorption were also studied.

Phytoremediation as a green and sustainable prospective method for heavy metal contamination: a review

“…183 Researchers have documented the use of SDS, a widely available surfactant, in the eld of soil contamination remediation. 184 When herbaceous plants are used in an SDSstrengthening phytoremediation procedure in conjunction with soil ooding, 185 HMs including Cu, Zn, Pb, and Cd become more soluble. Aer receiving SDS treatment, Althaea rosea 186 and Calendula officinalis 182 both accumulated more Cd in their roots and shoots.…”

Assisting Phytoremediation of Heavy Metals Using Chemical Amendments

“…SDS is a surfactant that is most commonly used in detergents, but it can also be used for heavy metal and organic contaminant remediation from soil [34]. SDS can ameliorate solubilities of various hydrocarbons and heavy metals such as zinc, cadmium, lead, and copper, making their removal easier, both in phytoremediation trails involving herbaceous species [78] and soil flushing [79]. Surfactants contain a hydrophobic portion that has less affinity for aqueous solutions, and the hydrophilic polar portion, which has a higher affinity for aqueous solutions.…”