Field note: hydraulic containment of a BTEX plume using poplar trees.
Identifieur interne : 003436 ( Main/Curation ); précédent : 003435; suivant : 003437Field note: hydraulic containment of a BTEX plume using poplar trees.
Auteurs : Tanja Barac [Belgique] ; Nele Weyens ; Licy Oeyen ; Safiyh Taghavi ; Daniel Van Der Lelie ; Dirk Dubin ; Marco Spliet ; Jaco VangronsveldSource :
- International journal of phytoremediation [ 1522-6514 ] ; 2009.
Descripteurs français
- KwdFr :
- Dépollution biologique de l'environnement (MeSH), Dérivés du benzène (composition chimique), Mazout (MeSH), Polluants du sol (composition chimique), Polluants du sol (métabolisme), Populus (microbiologie), Populus (métabolisme), Racines de plante (effets des médicaments et des substances chimiques), Racines de plante (microbiologie), Racines de plante (métabolisme).
- MESH :
- composition chimique : Dérivés du benzène, Polluants du sol.
- effets des médicaments et des substances chimiques : Racines de plante.
- microbiologie : Populus, Racines de plante.
- métabolisme : Polluants du sol, Populus, Racines de plante.
- Dépollution biologique de l'environnement, Mazout.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Benzene Derivatives, Soil Pollutants.
- drug effects : Plant Roots.
- metabolism : Plant Roots, Populus, Soil Pollutants.
- microbiology : Plant Roots, Populus.
- Biodegradation, Environmental, Fuel Oils.
Abstract
In 1999, 275 poplar trees were planted on a field site near a car factory in order to install a bioscreen. The aim was to combine the biodegradation activities of poplar and its associated rhizosphere and endophytic microorganisms for containing a BTEX contaminated groundwater plume. This BTEX plume occurred as the result of leaking solvents and fuel storage tanks. Monitoring, conducted overa 6-year period (1999-2005) after the planting of the trees suggested that the poplar trees and their associated microorganisms had, once the tree roots reached the contaminated groundwater zone, an active role in the remediation of the BTEX plume, resulting in full containment of the contamination. Analysis of the microbial communities associated with poplar demonstrated that, once the poplar roots got in contact with the BTEX contaminated groundwater, enrichment occurred of both rhizosphere and endophytic bacteria that were able to degrade toluene. Interestingly, once the BTEX plume was remediated, the numbers of toluene degrading rhizosphere and endophytic bacteria decreased below the detection limit, indicating that their population resulted from selective enrichment by the presence of the contaminants.
DOI: 10.1080/15226510802655880
PubMed: 19810345
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pubmed:19810345Le document en format XML
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<term>Plant Roots (drug effects)</term>
<term>Plant Roots (metabolism)</term>
<term>Plant Roots (microbiology)</term>
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<term>Mazout (MeSH)</term>
<term>Polluants du sol (composition chimique)</term>
<term>Polluants du sol (métabolisme)</term>
<term>Populus (microbiologie)</term>
<term>Populus (métabolisme)</term>
<term>Racines de plante (effets des médicaments et des substances chimiques)</term>
<term>Racines de plante (microbiologie)</term>
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<term>Fuel Oils</term>
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<front><div type="abstract" xml:lang="en">In 1999, 275 poplar trees were planted on a field site near a car factory in order to install a bioscreen. The aim was to combine the biodegradation activities of poplar and its associated rhizosphere and endophytic microorganisms for containing a BTEX contaminated groundwater plume. This BTEX plume occurred as the result of leaking solvents and fuel storage tanks. Monitoring, conducted overa 6-year period (1999-2005) after the planting of the trees suggested that the poplar trees and their associated microorganisms had, once the tree roots reached the contaminated groundwater zone, an active role in the remediation of the BTEX plume, resulting in full containment of the contamination. Analysis of the microbial communities associated with poplar demonstrated that, once the poplar roots got in contact with the BTEX contaminated groundwater, enrichment occurred of both rhizosphere and endophytic bacteria that were able to degrade toluene. Interestingly, once the BTEX plume was remediated, the numbers of toluene degrading rhizosphere and endophytic bacteria decreased below the detection limit, indicating that their population resulted from selective enrichment by the presence of the contaminants.</div>
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