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Degradation of toxaphene in aged and freshly contaminated soil

Lacayo-Romero, M ; van Bavel, B and Mattiasson, Bo LU (2006) In Chemosphere 63(4). p.609-615
Abstract
Degradation of toxaphene in soil from both newly contaminated (from Sweden) and aged spills (from Nicaragua) were studied. The newly contaminated soil contained approximately 11 mg kg(-1) toxaphene while the aged Nicaraguan soil contained approximately 100 mg kg-1. Degradation was studied in anaerobic bioreactors, some of which were supplied with lactic acid and others with Triton (R) X-114. In this study we found that the lower isomers Parlar 11, 12 were degraded while the concentration of isomer Parlar 15 increased. This supported an earlier evaluation which indicated that less chlorinated isomers are formed from more heavily isomers. Lactic acid when added to the soil, interfere with the degradation of toxaphene. Lactic acid was added;... (More)
Degradation of toxaphene in soil from both newly contaminated (from Sweden) and aged spills (from Nicaragua) were studied. The newly contaminated soil contained approximately 11 mg kg(-1) toxaphene while the aged Nicaraguan soil contained approximately 100 mg kg-1. Degradation was studied in anaerobic bioreactors, some of which were supplied with lactic acid and others with Triton (R) X-114. In this study we found that the lower isomers Parlar 11, 12 were degraded while the concentration of isomer Parlar 15 increased. This supported an earlier evaluation which indicated that less chlorinated isomers are formed from more heavily isomers. Lactic acid when added to the soil, interfere with the degradation of toxaphene. Lactic acid was added; several isomers appeared to degrade rather slowly in newly contaminated Swedish soil. The Swedish soil, without any external carbon source, showed the slowest degradation rate of all the compounds studied. When Triton (R) X-114 at 0.4 mM was added, the degradation rate of the compounds increased. This study illustrates that biodegradation of toxaphene is a complex process and several parameters have to be taken into consideration. Degradation of persistent pollutants in the environment using biotechnology is dependent on bioavailability, carbon sources and formation of metabolites. (c) 2005 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
lactic acid, POPs, aged contaminated soil, biodegradation
in
Chemosphere
volume
63
issue
4
pages
609 - 615
publisher
Elsevier
external identifiers
  • wos:000237379500008
  • pmid:16213563
  • scopus:33645968385
ISSN
1879-1298
DOI
10.1016/j.chemosphere.2005.08.019
language
English
LU publication?
yes
id
4ef8587e-ec8d-4872-8d98-9043311dbc4e (old id 410161)
date added to LUP
2016-04-01 12:03:15
date last changed
2020-01-12 09:07:24
@article{4ef8587e-ec8d-4872-8d98-9043311dbc4e,
  abstract     = {Degradation of toxaphene in soil from both newly contaminated (from Sweden) and aged spills (from Nicaragua) were studied. The newly contaminated soil contained approximately 11 mg kg(-1) toxaphene while the aged Nicaraguan soil contained approximately 100 mg kg-1. Degradation was studied in anaerobic bioreactors, some of which were supplied with lactic acid and others with Triton (R) X-114. In this study we found that the lower isomers Parlar 11, 12 were degraded while the concentration of isomer Parlar 15 increased. This supported an earlier evaluation which indicated that less chlorinated isomers are formed from more heavily isomers. Lactic acid when added to the soil, interfere with the degradation of toxaphene. Lactic acid was added; several isomers appeared to degrade rather slowly in newly contaminated Swedish soil. The Swedish soil, without any external carbon source, showed the slowest degradation rate of all the compounds studied. When Triton (R) X-114 at 0.4 mM was added, the degradation rate of the compounds increased. This study illustrates that biodegradation of toxaphene is a complex process and several parameters have to be taken into consideration. Degradation of persistent pollutants in the environment using biotechnology is dependent on bioavailability, carbon sources and formation of metabolites. (c) 2005 Elsevier Ltd. All rights reserved.},
  author       = {Lacayo-Romero, M and van Bavel, B and Mattiasson, Bo},
  issn         = {1879-1298},
  language     = {eng},
  number       = {4},
  pages        = {609--615},
  publisher    = {Elsevier},
  series       = {Chemosphere},
  title        = {Degradation of toxaphene in aged and freshly contaminated soil},
  url          = {http://dx.doi.org/10.1016/j.chemosphere.2005.08.019},
  doi          = {10.1016/j.chemosphere.2005.08.019},
  volume       = {63},
  year         = {2006},
}