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Assessments of the Efficacy of a Long-Term Application of a Phytoremediation System Using Hybrid Poplar Trees at Former Oil Tank Farm Sites

Assessments of the Efficacy of a Long-Term Application of a Phytoremediation System Using Hybrid Poplar Trees at Former Oil Tank Farm Sites

Ahmed S El-Gendy, Sotero Svingos, Donald Brice, Joel H Garretson, Jerald Schnoor

Water Environ Res. 2009 May;81(5):486-98.

PMID: 19472940

Abstract:

A poplar tree-phytoremediation system was installed at former refinery and tank farm sites in Cabin Creek, West Virginia, to cleanup petroleum-contaminated-soils and groundwater. Groundwater and soils in both sites were sampled and analyzed on a regular basis to monitor changes in contaminant concentration since 1999. The concentration of benzene, toluene, ethylbenzene, xylene, and gasoline range organics (GRO) decreased an average of 81%, 90%, 67%, 78%, and 82%, respectively, in the lower soil horizons and 34%, 84%, 12%, 19%, and 59%, respectively, in groundwater. In addition, concentrations of oxygen, methane, and carbon dioxide in soil gas demonstrated that tree roots dewatered soils and allowed penetration of oxygen deep into the soil profile, creating necessary conditions for rhizosphere bioremediation. Although required clean-up time can limit phytoremediation, it has proven to be a cost-effective strategy for site improvement if imminent pathways for human exposure and risk are not an issue.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AS2121295	Gasoline Range Organics (GRO)			Price

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