PoplarV1, Main, Exploration, bibRecord, 004647

The potential for phytoremediation of MTBE.

Identifieur interne : 004647 ( Main/Exploration ); précédent : 004646; suivant : 004648

The potential for phytoremediation of MTBE.

Auteurs : E. Rubin [États-Unis] ; A. Ramaswami

Source :

Water research [ 0043-1354 ] ; 2001.

RBID : pubmed:11268857

Descripteurs français

KwdFr :
- Arbres (MeSH), Culture hydroponique (MeSH), Dépollution biologique de l'environnement (MeSH), Polluants chimiques de l'eau (analyse), Polluants chimiques de l'eau (métabolisme), Purification de l'eau (méthodes), Rosales (métabolisme), Éthers méthyliques (analyse), Éthers méthyliques (métabolisme).
MESH :
- analyse : Polluants chimiques de l'eau, Éthers méthyliques.
- métabolisme : Polluants chimiques de l'eau, Rosales, Éthers méthyliques.
- méthodes : Purification de l'eau.
- Arbres, Culture hydroponique, Dépollution biologique de l'environnement.

English descriptors

KwdEn :
- Biodegradation, Environmental (MeSH), Hydroponics (MeSH), Methyl Ethers (analysis), Methyl Ethers (metabolism), Rosales (metabolism), Trees (MeSH), Water Pollutants, Chemical (analysis), Water Pollutants, Chemical (metabolism), Water Purification (methods).
MESH :
- chemical , analysis : Methyl Ethers, Water Pollutants, Chemical.
- chemical , metabolism : Methyl Ethers, Water Pollutants, Chemical.
- metabolism : Rosales.
- methods : Water Purification.
- Biodegradation, Environmental, Hydroponics, Trees.

Abstract

This paper examines the potential for phytoremediation of MTBE, a gasoline additive that has become a prevalent and persistent groundwater pollutant, due to its' non-sorbing and non-reactive nature in water. A novel experimental design is developed to measure plant uptake and transpiration of MTBE from hydroponic systems, separating these processes from passive volatilization of the chemical. Plant uptake experiments indicate 30% reduction in MTBE mass in water over a 1-week period by small poplar saplings, at both high (1600 ppb) and low (300 ppb) MTBE concentrations. Active plant uptake of MTBE was approximately double that achieved by passive volatilization through a balsa wood control. MTBE was detected in biomass at the 100-ppb level, confirming passage of MTBE through the plant. A mass balance indicated that MTBE was largely untransformed during transport through the small poplar saplings to air. The high degree of MTBE removal achieved by small plants over a short period of time indicates great potential for successful phytoremediation of subsurface MTBE plumes using poplar trees. The fraction of MTBE removed from the hydroponic systems correlated well with volume of water transpired by the plants; the correlation enabled computation of the MTBE transpiration stream concentration factor of approximately 1, an important parameter for the design of engineered MTBE phytoremediation systems.

DOI: 10.1016/s0043-1354(00)00555-8
PubMed: 11268857

Affiliations:

États-Unis

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Le document en format XML

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<term>Methyl Ethers (metabolism)</term>
<term>Rosales (metabolism)</term>
<term>Trees (MeSH)</term>
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<term>Polluants chimiques de l'eau (métabolisme)</term>
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<term>Éthers méthyliques (analyse)</term>
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<front><div type="abstract" xml:lang="en">This paper examines the potential for phytoremediation of MTBE, a gasoline additive that has become a prevalent and persistent groundwater pollutant, due to its' non-sorbing and non-reactive nature in water. A novel experimental design is developed to measure plant uptake and transpiration of MTBE from hydroponic systems, separating these processes from passive volatilization of the chemical. Plant uptake experiments indicate 30% reduction in MTBE mass in water over a 1-week period by small poplar saplings, at both high (1600 ppb) and low (300 ppb) MTBE concentrations. Active plant uptake of MTBE was approximately double that achieved by passive volatilization through a balsa wood control. MTBE was detected in biomass at the 100-ppb level, confirming passage of MTBE through the plant. A mass balance indicated that MTBE was largely untransformed during transport through the small poplar saplings to air. The high degree of MTBE removal achieved by small plants over a short period of time indicates great potential for successful phytoremediation of subsurface MTBE plumes using poplar trees. The fraction of MTBE removed from the hydroponic systems correlated well with volume of water transpired by the plants; the correlation enabled computation of the MTBE transpiration stream concentration factor of approximately 1, an important parameter for the design of engineered MTBE phytoremediation systems.</div>
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<Abstract><AbstractText>This paper examines the potential for phytoremediation of MTBE, a gasoline additive that has become a prevalent and persistent groundwater pollutant, due to its' non-sorbing and non-reactive nature in water. A novel experimental design is developed to measure plant uptake and transpiration of MTBE from hydroponic systems, separating these processes from passive volatilization of the chemical. Plant uptake experiments indicate 30% reduction in MTBE mass in water over a 1-week period by small poplar saplings, at both high (1600 ppb) and low (300 ppb) MTBE concentrations. Active plant uptake of MTBE was approximately double that achieved by passive volatilization through a balsa wood control. MTBE was detected in biomass at the 100-ppb level, confirming passage of MTBE through the plant. A mass balance indicated that MTBE was largely untransformed during transport through the small poplar saplings to air. The high degree of MTBE removal achieved by small plants over a short period of time indicates great potential for successful phytoremediation of subsurface MTBE plumes using poplar trees. The fraction of MTBE removed from the hydroponic systems correlated well with volume of water transpired by the plants; the correlation enabled computation of the MTBE transpiration stream concentration factor of approximately 1, an important parameter for the design of engineered MTBE phytoremediation systems.</AbstractText>
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The potential for phytoremediation of MTBE.

The potential for phytoremediation of MTBE.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki