Journal
WATER AIR AND SOIL POLLUTION
Volume 194, Issue 1-4, Pages 23-30Publisher
SPRINGER INTERNATIONAL PUBLISHING AG
DOI: 10.1007/s11270-008-9689-9
Keywords
SDBS; marine sediment; adsorption; partition; adsorption isotherm
Funding
- National Natural Science Foundation of China [40676047]
- Taishan Mountain Scholar Construction Engineering Special Fund of Shandong Province, China
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The sorption behavior of sodium dodecylbenzene sulfonate (SDBS), an anionic surfactant, on marine sediments was systematically investigated. The experimental results showed that 100 min was required for the adsorption equilibrium. For the sediments treated by HCl and H2O, sorption behavior of SDBS was fit with linear isotherm very well over the concentration range studied at 298 K. The sorption occurred primarily due to partition function of hydrophobic chains into organic carbon of sediments. Sorption of SDBS on H2O2-treated sediments was satisfactorily fit with Freundlich isotherm model and mainly through surface function of clay minerals in the sediment. The sorption was favorably influenced by the increased salinity, deceased pH and decreased temperature of seawater.
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