Combined UV-biological degradation of PAHs
(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:
https://lup.lub.lu.se/record/141623
- author
- Guieysse, Benoit LU ; Viklund, Gunilla LU ; Toes, Ann-Charlotte LU and Mattiasson, Bo LU
- organization
- publishing date
- 2004
- 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
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Biotechnology (LTH) (011001037), Center for Chemistry and Chemical Engineering (011001000)
- id
- 9893a765-051e-49fe-8b2b-cea84588d764 (old id 141623)
- date added to LUP
- 2016-04-01 11:45:39
- date last changed
- 2022-03-28 02:37:12
@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}},
keywords = {{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}},
doi = {{10.1016/j.chemosphere.2004.01.021}},
volume = {{55}},
year = {{2004}},
}