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The fate of estrogenic hormones in an engineered treatment wetland with dense macrophytes

Water Environment Research

By:
and
DOI: 10.2175/106143005X41582

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Abstract

Recently, the estrogenic hormones 17??-estradiol (E2) and 17??-ethinyl estradiol (EE2) have been detected in municipal wastewater effluent and surface waters at concentrations sufficient to cause feminization of male fish. To evaluate the fate of steroid hormones in an engineered treatment wetland, lithium chloride, E2, and EE 2 were added to a treatment wetland test cell. Comparison of hormone and tracer data indicated that 36% of the E2 and 41% of the EE 2 were removed during the cell's 84-h hydraulic retention time (HRT). The observed attenuation was most likely the result of sorption to hydrophobic surfaces in the wetland coupled with biotransformation. Sorption was indicated by the retardation of the hormones relative to the conservative tracer. Biotransformation was indicated by elevated concentrations of the E2 metabolite, estrone. It may be possible to improve the removal efficiency by increasing the HRT or the density of plant materials.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
The fate of estrogenic hormones in an engineered treatment wetland with dense macrophytes
Series title:
Water Environment Research
DOI:
10.2175/106143005X41582
Volume
77
Issue:
1
Year Published:
2005
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Water Environment Research
First page:
24
Last page:
31
Number of Pages:
8