Determination of the capability of constructed wetland components to remove 17α-ethynylestradiol and β-estradiol from wastewater

Bliss, Samantha N.
Thumbnail Image
Other Contributors
Nyman, Marianne
Kilduff, James
Zimmie, T. F.
Issue Date
Environmental engineering
Terms of Use
This electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
Full Citation
The removal was quantified over fifteen weeks from a set starting concentration of approximately 10 mg/L (concentration known) combined β-estradiol and 17α-ethynylestradiol contained in a batch reactor system. Another goal was to identify and quantify residual β-estradiol and 17α-ethynylestradiol in the plant tissue and sediment media at the conclusion of the study using solvent extraction methods. Results indicated that each plant species and the sediment media were responsible for a reduction in combined estrogen concentration over time. Removal efficiency data over time and final concentrations of combined estrogen consistently placed the duckweed plant (96.4 % removal) ahead of water hyacinth (72.2 % removal), water cabbage (34.6 % removal), and finally sediment media for rate of removal (8.7 % removal) and overall reduction of contaminant concentration. Extraction data for both plant material and sediment media suggested the attenuation of estrogenic compounds in a non-degraded state throughout the study. This research project presents the approach used to better understand unique removal capabilities of each selected component of constructed wetland design. Additionally, included discussion offers points of consideration regarding sustaining living plant systems in the laboratory as well as a proposed expanded scope of work for future researchers.
December 2017
School of Engineering
Dept. of Civil and Environmental Engineering
Rensselaer Polytechnic Institute, Troy, NY
Rensselaer Theses and Dissertations Online Collection
Restricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.