CHAMPAIGN, Ill. — Wastewater from large dairy farms contains significant concentrations of estrogenic hormones that can persist for months or even years, researchers report in a new study. In the absence of oxygen, the estrogens rapidly convert from one form to another; this stalls their biodegradation and complicates efforts to detect them, the researchers found.
The study, led by scientists at the Illinois Sustainable Technology Center, is the first to document the unusual behavior of estrogens in wastewater lagoons. The study appears in the journal Environmental Science & Technology.
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