Advanced

Combined UV-biological degradation of PAHs

Guieysse, Benoit LU ; Viklund, Gunilla LU ; Toes, Ann-Charlotte LU and Mattiasson, Bo LU (2004) In Chemosphere 55(11). p.1493-1499
Abstract
The UV-photolysis of PAHs was tested in silicone oil and tetradecane. In most cases, the degradation of a pollutant provided within a mixture was lower than when provided alone due to competitive effects. With the exception of anthracene, the larger pollutants (4- and 5-rings) were always degraded first, proving that UV-treatment preferentially acts on large PAHs and thereby provides a good complement to microbial degradation. UV-photolysis was also found to be suitable for treatment of soil extract from contaminated soils. The feasibility of UV-biological treatment was demonstrated for the removal of a mixture of phenanthrene and pyrene in silicone oil. UV-irradiation of the silicone oil led to 83% pyrene removal but no phenanthrene... (More)
The UV-photolysis of PAHs was tested in silicone oil and tetradecane. In most cases, the degradation of a pollutant provided within a mixture was lower than when provided alone due to competitive effects. With the exception of anthracene, the larger pollutants (4- and 5-rings) were always degraded first, proving that UV-treatment preferentially acts on large PAHs and thereby provides a good complement to microbial degradation. UV-photolysis was also found to be suitable for treatment of soil extract from contaminated soils. The feasibility of UV-biological treatment was demonstrated for the removal of a mixture of phenanthrene and pyrene in silicone oil. UV-irradiation of the silicone oil led to 83% pyrene removal but no phenanthrene photodegradation. Subsequent treatment of the oil in a two-phases partitioning bioreactor (TPPB) system inoculated with Pseudomonas sp. was followed by complete phenanthrene biodegradation but no further pyrene removal. Totally, the combined process allowed 92% removal of the PAH mixture. Further work should focus on characterizing the photoproducts formed and studying the influence of the solvent on the photodegradation process. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Photolysis, Photodegradation, Biodegradation, Two-phase partitioning bioreactor, Biphasic
in
Chemosphere
volume
55
issue
11
pages
1493 - 1499
publisher
Elsevier
external identifiers
  • wos:000231278500007
  • pmid:15099729
  • scopus:1942522063
ISSN
1879-1298
DOI
10.1016/j.chemosphere.2004.01.021
language
English
LU publication?
yes
id
9893a765-051e-49fe-8b2b-cea84588d764 (old id 141623)
date added to LUP
2007-07-02 10:43:14
date last changed
2017-09-24 03:31:22
@article{9893a765-051e-49fe-8b2b-cea84588d764,
  abstract     = {The UV-photolysis of PAHs was tested in silicone oil and tetradecane. In most cases, the degradation of a pollutant provided within a mixture was lower than when provided alone due to competitive effects. With the exception of anthracene, the larger pollutants (4- and 5-rings) were always degraded first, proving that UV-treatment preferentially acts on large PAHs and thereby provides a good complement to microbial degradation. UV-photolysis was also found to be suitable for treatment of soil extract from contaminated soils. The feasibility of UV-biological treatment was demonstrated for the removal of a mixture of phenanthrene and pyrene in silicone oil. UV-irradiation of the silicone oil led to 83% pyrene removal but no phenanthrene photodegradation. Subsequent treatment of the oil in a two-phases partitioning bioreactor (TPPB) system inoculated with Pseudomonas sp. was followed by complete phenanthrene biodegradation but no further pyrene removal. Totally, the combined process allowed 92% removal of the PAH mixture. Further work should focus on characterizing the photoproducts formed and studying the influence of the solvent on the photodegradation process.},
  author       = {Guieysse, Benoit and Viklund, Gunilla and Toes, Ann-Charlotte and Mattiasson, Bo},
  issn         = {1879-1298},
  keyword      = {Photolysis,Photodegradation,Biodegradation,Two-phase partitioning bioreactor,Biphasic},
  language     = {eng},
  number       = {11},
  pages        = {1493--1499},
  publisher    = {Elsevier},
  series       = {Chemosphere},
  title        = {Combined UV-biological degradation of PAHs},
  url          = {http://dx.doi.org/10.1016/j.chemosphere.2004.01.021},
  volume       = {55},
  year         = {2004},
}