Browse

Role of Nanoporosity and Hydrophobicity in Sequestration and Bioavailability: Tests with Model Solids

Cited 185 time in Web of Science Cited 198 time in Scopus
Authors
Alexander, Martin; Nam, Kyoungphile
Issue Date
1998-01-01
Publisher
American Chemical Society
Citation
Environ. Sci. Technol. 32 (1998), pp. 71–74.
Abstract
Phenanthrene was rapidly and extensively mineralized by a bacterium in the presence of glass or polystyrene beads with no pores, silica beads with 2.5−15 nm pores, 3-aminopropyl-bonded silica beads with 6-nm pores, and diatomite beads with 5.4 μm pores. These beads sorbed 10−99% of the compound in 15 h, but 48−100% of the sorbed hydrocarbon was desorbed in 240 h. Although little phenanthrene was desorbed from octadecyl-bonded silica beads with 6-nm pores, the hydrocarbon was rapidly and extensively degraded. In contrast, the bacterium mineralized <7% of the phenanthrene sorbed to polystyrene beads with 5- or 300−400-nm pores, and little of the compound was desorbed. These findings are consistent with the hypothesis that sequestration and reduced bioavailability occur when hydrophobic compounds enter into nanopores having hydrophobic surfaces.
ISSN
0013-936X (print)
1520-5851 (online)
Language
English
URI
https://hdl.handle.net/10371/8706
DOI
https://doi.org/10.1021/es9705304
Files in This Item:
There are no files associated with this item.
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Civil & Environmental Engineering (건설환경공학부)Journal Papers (저널논문_건설환경공학부)
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse