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dc.rights.licenseRestricted to current Rensselaer faculty, staff and students. Access inquiries may be directed to the Rensselaer Libraries.
dc.contributorNyman, Marianne
dc.contributorKilduff, James
dc.contributorZimmie, T. F.
dc.contributor.authorBliss, Samantha N.
dc.date.accessioned2021-11-03T08:55:41Z
dc.date.available2021-11-03T08:55:41Z
dc.date.created2018-02-21T13:07:20Z
dc.date.issued2017-12
dc.identifier.urihttps://hdl.handle.net/20.500.13015/2108
dc.descriptionDecember 2017
dc.descriptionSchool of Engineering
dc.description.abstractThe 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.
dc.description.abstractThe persistence of synthetic estrogen compounds, β-estradiol and 17α-ethynylestradiol, in aquatic ecosystems is important to understand due to the tendency of these compounds to bio-accumulate in fatty animal tissues. Bioaccumulation affects reproductive potential in aquatic organisms and poses immune and endocrine system hazards to humans consuming affected-animal food products and water from sources with incomplete treatment. A fifteen-week bench-scale laboratory study was performed to assess the viability and efficiency of using a constructed wetland system with floating macrophyte plant species as a treatment alternative to traditional mechanical and chemical processes. One goal of this study was to isolate three plant species Eichhornia crassipes (water hyacinth), Pistia stratiotes (water cabbage), and Lemna minor (duckweed) along with a composite sediment media (gravel, sand, and silty-clay layers) and quantify the removal efficiency and final concentrations of selected contaminant compounds in system sample water.
dc.language.isoENG
dc.publisherRensselaer Polytechnic Institute, Troy, NY
dc.relation.ispartofRensselaer Theses and Dissertations Online Collection
dc.subjectEnvironmental engineering
dc.titleDetermination of the capability of constructed wetland components to remove 17α-ethynylestradiol and β-estradiol from wastewater
dc.typeElectronic thesis
dc.typeThesis
dc.digitool.pid178738
dc.digitool.pid178739
dc.digitool.pid178740
dc.rights.holderThis electronic version is a licensed copy owned by Rensselaer Polytechnic Institute, Troy, NY. Copyright of original work retained by author.
dc.description.degreeMS
dc.relation.departmentDept. of Civil and Environmental Engineering


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