Adsorption of dibenzothiophene on marine sediments treated by a sequential procedure
- Ocean Univ. of Qingdao (China). Coll. of Chemistry and Chemical Engineering
The sorption behavior of dibenzothiophene on marine sediments treated by a sequential procedure was investigated. Sorption isotherms for dibenzothiophene on both no treatment and NaOAc-HOAc treatment sediments were all linear. Differences in K{sub p}`s between no-treatment and NaOAc-HOAc treatment sediments were mainly the result of differences in organic carbon content. Nonlinear adsorption isotherms of dibenzothiophene were observed on the sediments treated with H{sub 2}O{sub 2} and could be described by the Freundlich equation. Nonlinear isotherms suggested that the sorption mechanism was a heterogeneous adsorption process occurring on the surfaces of the residual organic matter and the bare inorganic minerals in the sediment. A linear correlation was found between the Freundlich constant K and the residual organic carbon. In addition, the clay content in the sediment also had a significant effect on the residual organic carbon content and the Freundlich constant K. Differences in the isotherms of dibenzothiophene between the H{sub 2}O{sub 2} treatment sediments and the no or NaOAc-HOAc treatment sediments indicated that the sorption was strongly influenced by the change in composition as well as by the percentage of organic matter in the sediments.
- OSTI ID:
- 533092
- Journal Information:
- Journal of Colloid and Interface Science, Journal Name: Journal of Colloid and Interface Science Journal Issue: 2 Vol. 192; ISSN 0021-9797; ISSN JCISA5
- Country of Publication:
- United States
- Language:
- English
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