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Phytoremediation of Methyl Tertiary‐Butyl Ether
Encyclopedia entry

Phytoremediation of Methyl Tertiary‐Butyl Ether

S.K Winnike‐McMillan, Q Zhang, L. C Davis, L. E Erickson and J. L Schnoor
Water Encyclopedia, pp.385-397
John Wiley & Sons, Inc
04/15/2005
DOI: 10.1002/047147844X.gw2209

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Abstract

The capability of plants to remediate methyl tertiary‐butyl ether (MTBE) at contaminated sites is promising to the point that at least one field test is underway and others anticipated. Both hybrid poplar (Populus deltoides × Populus nigra ‘DN34’ ‘Imperial Carolina’) cuttings and alfalfa (Medicago sativa) facilitate the removal of MTBE from saturated soil in the laboratory. The primary removal of MTBE is by soil volatilization facilitated by plant transpiration. Very little of the contaminant is metabolized or accumulated in laboratory studies. The MTBE that volatilizes and the small amount that diffuses from stems or transpires through leaves do not represent a risk in the atmosphere due to the rapid dispersion and degradation. Despite the different behavior of MTBE in groundwater, plants, and the atmosphere, concurrent phytoremediation of gasoline spills containing MTBE and other contaminants is expected to be very useful in the future.
Ground Water Hydrology

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