Advanced

Desorption kinetics studies on PAH-contaminated soil under varying temperatures

Enell, Anja LU ; Reichenberg, Fredrik LU ; Ewald, Göran LU and Warfvinge, Per LU (2005) In Chemosphere 61(10). p.1529-1538
Abstract
The purpose of this study was to investigate the effect of temperature on the release of polycyclic aromatic hydrocarbons (PAHs) from aged contaminated soil. The release of fluorene, phenanthrene, anthracene, fluoranthene and pyrene at 7, 15, 18 and 23 °C was studied using a column leaching method with a hydraulic retention time of 0.5 h. As the temperature declined from 23 to 7 °C the concentrations decreased by a factor of 11–12 for all the studied compounds except for anthracene, which only decreased by a factor 7. Rate constants at maximum release rate at the four studied temperatures were assessed. From temperature dependence studies, apparent activation energies of desorption, , were calculated. -values appeared to be in the range of... (More)
The purpose of this study was to investigate the effect of temperature on the release of polycyclic aromatic hydrocarbons (PAHs) from aged contaminated soil. The release of fluorene, phenanthrene, anthracene, fluoranthene and pyrene at 7, 15, 18 and 23 °C was studied using a column leaching method with a hydraulic retention time of 0.5 h. As the temperature declined from 23 to 7 °C the concentrations decreased by a factor of 11–12 for all the studied compounds except for anthracene, which only decreased by a factor 7. Rate constants at maximum release rate at the four studied temperatures were assessed. From temperature dependence studies, apparent activation energies of desorption, , were calculated. -values appeared to be in the range of 105–137 kJ mol−1 for the studied PAHs and increased with the LeBas molar volume of the compounds. The increase of with increased molecular size indicates stronger sorption with increased hydrophobicity of the compounds. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Chemosphere
volume
61
issue
10
pages
1529 - 1538
publisher
Elsevier
external identifiers
  • pmid:15982715
  • wos:000234078600017
  • scopus:27944497792
ISSN
1879-1298
DOI
10.1016/j.chemosphere.2005.04.092
language
English
LU publication?
yes
id
6eaa54af-4b38-477e-8604-9647c6882c44 (old id 156461)
date added to LUP
2007-06-25 10:43:28
date last changed
2017-09-10 03:52:21
@article{6eaa54af-4b38-477e-8604-9647c6882c44,
  abstract     = {The purpose of this study was to investigate the effect of temperature on the release of polycyclic aromatic hydrocarbons (PAHs) from aged contaminated soil. The release of fluorene, phenanthrene, anthracene, fluoranthene and pyrene at 7, 15, 18 and 23 °C was studied using a column leaching method with a hydraulic retention time of 0.5 h. As the temperature declined from 23 to 7 °C the concentrations decreased by a factor of 11–12 for all the studied compounds except for anthracene, which only decreased by a factor 7. Rate constants at maximum release rate at the four studied temperatures were assessed. From temperature dependence studies, apparent activation energies of desorption, , were calculated. -values appeared to be in the range of 105–137 kJ mol−1 for the studied PAHs and increased with the LeBas molar volume of the compounds. The increase of with increased molecular size indicates stronger sorption with increased hydrophobicity of the compounds.},
  author       = {Enell, Anja and Reichenberg, Fredrik and Ewald, Göran and Warfvinge, Per},
  issn         = {1879-1298},
  language     = {eng},
  number       = {10},
  pages        = {1529--1538},
  publisher    = {Elsevier},
  series       = {Chemosphere},
  title        = {Desorption kinetics studies on PAH-contaminated soil under varying temperatures},
  url          = {http://dx.doi.org/10.1016/j.chemosphere.2005.04.092},
  volume       = {61},
  year         = {2005},
}