Fate of trace organics in a wastewater effluent dependent stream

The Science of the Total Environment
Bingfeng DongR G Arnold

Abstract

Trace organic compounds (TOrCs) in municipal wastewater effluents that are discharged to streams are of potential concern to ecosystem and human health. This study examined the fate of a suite of TOrCs and estrogenic activity in water and sediments in an effluent-dependent stream in Tucson, Arizona. Sampling campaigns were performed during 2011 to 2013 along the Lower Santa Cruz River, where TOrCs and estrogenic activity were measured in aqueous (surface) and solid (riverbed sediment) phases. Some TOrCs, including contributors to estrogenic activity, were rapidly attenuated with distance of travel in the river. Those TOrCs that are not sufficiently attenuated and percolate to ground water have in common low biodegradation probabilities and low octanol-water distribution ratios. Independent experiments showed that attenuation of estrogenic compounds may be due in part to indirect photolysis caused by formation of organic radicals from sunlight absorption. Hydrophobic TOrCs may accumulate in riverbed sediments during dry weather periods, but riverbed sediment quality is periodically affected through storm-related scouring during periods of heavy rainfall and runoff. Taken together, evidence suggests that natural processes can att...Continue Reading

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Citations

May 18, 2016·Environmental Science and Pollution Research International·Caiyun SunYanan Chen
Jun 29, 2016·The Science of the Total Environment·Paul M BradleyDana W Kolpin
Jul 23, 2016·Chemosphere·Tianqi ZhangA Eduardo Sáez
Jun 22, 2017·Environmental Toxicology and Chemistry·Paul M BradleyKristin M Romanok
Nov 14, 2018·Environmental Management·Carmen G FranksStewart B Rood
Nov 24, 2018·The Science of the Total Environment·Paul M BradleyIan R Waite
May 8, 2018·The Science of the Total Environment·Rebecca H WeissingerPaul M Bradley
Mar 20, 2021·The Science of the Total Environment·Jesús Daniel Cardoso-VeraLeobardo Manuel Gómez-Oliván
Apr 18, 2021·Environmental Science and Pollution Research International·Drew E EppehimerMichael T Bogan

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