Irreversible adsorption-desorption of hydrophobic organic contaminants in a simulated colloidal sediment
Conference
·
OSTI ID:126438
- Rice Univ., Houston, TX (United States)
The adsorption-desorption of hydrophobic organic chemicals plays an important role in fate and transport. Many mechanisms have been proposed to explain the slow release or irreversible fraction which is observed in many sediment/soil systems. However, the complexity of soils and sediments produces a wide variation in sorption capacity and desorption behavior. The desorption of many systems is effected by the solution composition such as ionic strength. Two explanations are re arrangement of the soil particle or perhaps even a change in the organic carbon phase. For this reason a surrogate colloidal sediment is produced to determine the cause of a slow release or presence of an irreversible fraction. The surrogate is composed of colloidal anatase coated with an anionic surfactant (sodium dodecyl-benzenesulphonate) present as admicelles on the surface. From this system the existence of an irreversible fraction can be determined as well as insight into its cause.
- OSTI ID:
- 126438
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Irreversible adorption-desorption of PCB from a natural and simulated sediment
Irreversible adsorption of PCB to natural and simulated sediment
Irreversible adsorption/desorption of Naphthalene to lula sediments
Conference
·
Tue Oct 01 00:00:00 EDT 1996
·
OSTI ID:370236
Irreversible adsorption of PCB to natural and simulated sediment
Conference
·
Sat Dec 30 23:00:00 EST 1995
·
OSTI ID:455287
Irreversible adsorption/desorption of Naphthalene to lula sediments
Conference
·
Tue Oct 01 00:00:00 EDT 1996
·
OSTI ID:370234