Sorption of 17β-Estradiol and 17α-Ethinylestradiol by Colloidal

Richard H. Lindberg,, Ulrika Olofsson,, Per Rendahl,, Magnus I. Johansson,, Mats Tysklind, and, Barbro A. V. Andersson. Behavior of Fluoroquinolones a...
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Environ. Sci. Technol. 2004, 38, 3322-3329

Sorption of 17β-Estradiol and 17r-Ethinylestradiol by Colloidal Organic Carbon Derived from Biological Wastewater Treatment Systems R. DAVID HOLBROOK, NANCY G. LOVE, AND JOHN T. NOVAK* Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061

Sorption coefficients (Kcoc) between 17β-estradiol (E2), 17R-ethinylestradiol (EE2) and size-fractionated colloidal organic carbon (COC) derived from two biological wastewater treatment facilities were quantified by fluorescence quenching. The two wastewater treatment systems included a full-scale activated sludge system (FSAS) and a membrane bioreactor (MBR). The Kcoc coefficients were highly variable and ranged between (