Title: Release of Metals from Metal-Amended Soil Treated with a Sulfosuccinamate Surfactant: Effects of Surfactant Concentration, Soil/Solution Ratio, and pH
Authors: Hernandez-Soriano, MC ×
Peña, Aranzazu
Mingorance, Maria Dolores #
Issue Date: 2010
Publisher: American Society of Agronomy
Series Title: Journal of Environmental Quality vol:39 issue:4 pages:1298-1305
Abstract: Anionic surfactants, mainly sulfosuccinamates, can be found in soils as the result of sludge application, wastewater irrigation, and remediation processes Relatively high concentrations of surfactants together with multimetals can represent an environmental risk A study was performed to assess the potential of the anionic surfactant Aerosol 22 (A22) for release of Cd, Cu, Pb, and Zn from a metal-amended soil representative of a Mediterranean area Metal desorption was performed by batch experiments and release kinetics were assessed. Response surface methodology was applied to determine the Influence of A22 concentration and the surfactant/soil ratio, as extraction key factors. An increase in solution/soil rario to 100 (mL g(-1)) caused higher metal release. Leaching predictions found Pb to have the lowest and Cd the highest hazard. Metal release was highly dependent on pH When extraction was made at pH less than 7, low or negligible amounts of metals were leached, whereas an increase to pH 7 caused desorption rates of 50 to 55% for Cd, Cu, and Zn hut only 35% for Pb. Complexed metal-carboxylic groups from A22 were mainly responsible for us higher extractive capacity, especially of Cd and Cu.
ISSN: 0047-2425
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Division Soil and Water Management
× corresponding author
# (joint) last author

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