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Sorption kinetics of naphthalene and phenanthrene in loess soils

An, T; Chen, H; Zhan, HY; Zhu, K and Berndtsson, Ronny LU (2005) In Environmental Geology 47(4). p.467-474
Abstract
A laboratory study was executed to investigate the effect of surfactants to enhance sorption of polycyclic aromatic hydrocarbon (PAH) contaminants in loess soil. Phenanthrene and naphthalene were chosen as organic contaminant indicators in loess soil modi. fied by the cation surfactant hexadecyltrimethylammonium (HDTMA) bromide. The kinetic behavior of sorption during transport in natural and modified loess soil was studied. The results indicated that sorption rate in the cation surfactant modified loess soils was at least 3 times faster than that of the natural soil. A first-order kinetics model fitted the sorption data well for both soils. The sorption rates of the two organic compounds were related to their primary residual quantity on... (More)
A laboratory study was executed to investigate the effect of surfactants to enhance sorption of polycyclic aromatic hydrocarbon (PAH) contaminants in loess soil. Phenanthrene and naphthalene were chosen as organic contaminant indicators in loess soil modi. fied by the cation surfactant hexadecyltrimethylammonium (HDTMA) bromide. The kinetic behavior of sorption during transport in natural and modified loess soil was studied. The results indicated that sorption rate in the cation surfactant modified loess soils was at least 3 times faster than that of the natural soil. A first-order kinetics model fitted the sorption data well for both soils. The sorption rates of the two organic compounds were related to their primary residual quantity on the soils. The experiments showed that sorption amounts approached constant values approximately within 30 and 90 min for naphthalene and phenanthrene at 298-318 K, respectively. The rate constants, however, displayed negative correlation with increasing temperature. With changing temperature, the activation energy was calculated at -6.196-1.172 kJ/ mol for naphthalene and) 28.86-15.70 kJ/ mol for phenanthrene at 298-318 K. The results can be used to predict the sorption kinetics of phenanthrene and naphthalene in loess soils, and in a wider perspective, be used to better understand the transport of petroleum contaminants in the soil environment. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
sorption, phenanthrene, naphthalene, loess soils, vontamination, China, kinetics
in
Environmental Geology
volume
47
issue
4
pages
467 - 474
publisher
Springer
external identifiers
  • wos:000226972400002
  • scopus:14644399867
ISSN
0943-0105
DOI
10.1007/s00254-004-1163-4
language
English
LU publication?
yes
id
893e750e-cad2-43c0-a3c7-0aa1cedcd469 (old id 253766)
date added to LUP
2007-08-24 11:15:45
date last changed
2017-07-02 04:15:24
@article{893e750e-cad2-43c0-a3c7-0aa1cedcd469,
  abstract     = {A laboratory study was executed to investigate the effect of surfactants to enhance sorption of polycyclic aromatic hydrocarbon (PAH) contaminants in loess soil. Phenanthrene and naphthalene were chosen as organic contaminant indicators in loess soil modi. fied by the cation surfactant hexadecyltrimethylammonium (HDTMA) bromide. The kinetic behavior of sorption during transport in natural and modified loess soil was studied. The results indicated that sorption rate in the cation surfactant modified loess soils was at least 3 times faster than that of the natural soil. A first-order kinetics model fitted the sorption data well for both soils. The sorption rates of the two organic compounds were related to their primary residual quantity on the soils. The experiments showed that sorption amounts approached constant values approximately within 30 and 90 min for naphthalene and phenanthrene at 298-318 K, respectively. The rate constants, however, displayed negative correlation with increasing temperature. With changing temperature, the activation energy was calculated at -6.196-1.172 kJ/ mol for naphthalene and) 28.86-15.70 kJ/ mol for phenanthrene at 298-318 K. The results can be used to predict the sorption kinetics of phenanthrene and naphthalene in loess soils, and in a wider perspective, be used to better understand the transport of petroleum contaminants in the soil environment.},
  author       = {An, T and Chen, H and Zhan, HY and Zhu, K and Berndtsson, Ronny},
  issn         = {0943-0105},
  keyword      = {sorption,phenanthrene,naphthalene,loess soils,vontamination,China,kinetics},
  language     = {eng},
  number       = {4},
  pages        = {467--474},
  publisher    = {Springer},
  series       = {Environmental Geology},
  title        = {Sorption kinetics of naphthalene and phenanthrene in loess soils},
  url          = {http://dx.doi.org/10.1007/s00254-004-1163-4},
  volume       = {47},
  year         = {2005},
}