Surface Catalyzed Oxidative Oligomerization of 17β-Estradiol by Fe³⁺-Saturated Montmorillonite

Environmental Science & Technology, Journal Year: 2014, Volume and Issue: 49(2), P. 956 - 964

Published: Dec. 12, 2014

With widespread detection of endocrine disrupting compounds including hormones in wastewater, there is a need to develop cost-effective remediation technologies for their removal from wastewater. Previous research has shown that Fe3+-saturated montmorillonite effective quickly transforming phenolic organic such as pentachlorophenol, acids, and triclosan via surface-catalyzed oligomerization. However, little known about its effectiveness reaction mechanisms when reacting with hormones. In this study, the kinetics catalyzed 17β-estradiol (βE2) transformation was investigated. The products were identified using liquid chromatography coupled mass spectrometry, structures further confirmed computational approach. Rapid βE2 presence an aqueous system detected. disappearance follows first-order kinetics, while overall catalytic second-order estimated rate constant 200 ± 24 (mmol βE2/g mineral)−1 h–1. half-life be 0.50 0.06 h. oligomers found major exposed montmorillonite. About 98% transformed into which are >107 times less water-soluble than and, therefore, much bioavailable mobile then βE2. formed settled phase not accumulated on sites interlayer surfaces montmorillonite, reason observed >84% efficiency even after five consecutive usages same results study clearly demonstrated great potential used material efficient

Language: Английский

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A critical review on the distribution and ecological risk assessment of steroid hormones in the environment in China

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 786, P. 147452 - 147452

Published: April 30, 2021

Language: Английский

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The Environmental and Health Impacts of Steroids and Hormones in Wastewater Effluent, as Well as Existing Removal Technologies: A Review

Ecologies, Journal Year: 2022, Volume and Issue: 3(2), P. 206 - 224

Published: June 12, 2022

Micro-pollutants especially estrogens, progesterone, androgens, glucocorticoids, and growth hormones, are biological chemical impurities that find their way into natural aquatic environments in trace quantities (ng/L), possess a significant disturbance by impacting human life. Due to the progress analysis detection techniques, these elements have been observed quantified several studies. However, as result of limited methods management technology, adverse effects micro-pollutants surface coastal water is largely unknown. For this study, compounds hormones selected according high frequent value environmental waters. The concentration steroid ranges from 0.1–196 ng/L (estrogens), less than 0.1 439 (progesterone), 0.06–86 ± 2 (androgens), 433 (glucocorticoids), 26.6 ng/g 100 (growth hormones), percentage removal efficiency varies 10% 99%, measurement was found be very low. Here, we report future studies necessary detect entry routes water, well explore technological approaches which able resolve issue permanently.

Language: Английский

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Occurrence and removal of micropollutants in full-scale aerobic, anaerobic and facultative wastewater treatment plants in Brazil

Journal of Environmental Management, Journal Year: 2021, Volume and Issue: 287, P. 112286 - 112286

Published: March 9, 2021

Language: Английский

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Removal of emerging contaminants in conventional and advanced biological wastewater treatment plants in India-a comparison of treatment technologies

Environmental Research, Journal Year: 2022, Volume and Issue: 218, P. 115012 - 115012

Published: Dec. 9, 2022

Language: Английский

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