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- Title
Sediment–Water Interactions of Bisphenol A Under Simulated Marine Conditions.
- Authors
Tian, Chong; Wang, Jiang-tao; Song, Xing-liang
- Abstract
The sorption behavior of bisphenol A (BPA) on marine sediments treated using different methods was investigated in batch equilibrium experiments. Adsorption isotherms were well fitted to Freundlich model and the model parameters, KF and n, had been evaluated. When temperature decreased from 308 to 288 K, Freundlich constant ( KF) increased about 200%. KF increased by approximately 92.6% with increase of salinity from 1:2 artificial seawater (1:2 ASW) to ASW conditions. The plateau sorption capacity was around 0.8579 mg/g in the pH range 7.46--8.34, whereas the adsorption capacity decreased from 0.8579 to 0 mg/g when pH from 8.34 to 8.91, suggesting that the undissociated species were adsorbed more readily and that electrostatic repulsion may inhibit sorption as pH increases. The increase of KF value between the two media from natural seawater to ASW was around 25.3%, indicating the presence of dissolved organic matter appeared to have a significant effect on sorption. Mineral surface of sediment, together with microporosity of sediment, showed to be primarily responsible for the sorption of BPA.
- Subjects
BISPHENOL A; BIOAVAILABILITY; ENDOCRINE disruptors; MARINE sediments; SEDIMENT analysis; ABSORPTION; SOIL absorption &; adsorption; SIMULATION methods &; models
- Publication
Water, Air & Soil Pollution, 2009, Vol 199, Issue 1-4, p301
- ISSN
0049-6979
- Publication type
Article
- DOI
10.1007/s11270-008-9879-5