Abstract: This study presents a method to regenerate molecularly imprinted polymers (MIPs) used for the selective removal of endocrine disrupting compounds from aqueous effluents. Regeneration was based on solvent extraction under UV irradiation to regenerate the polymer and the solvent while destroying the contaminants. Acetone was selected as the best solvent for irradiation of estrone (E1), 17β-estradiol (E2) and ethinylestradiol (EE2) using either UVC (254ánm) or UV-vis. A MIP synthesized with E2 as template was then tested for the extraction of this compound from a 2áμg/L loaded aqueous solution. E2 was recovered by 73á¦á11% and 46á¦á13% from the MIPs and a non-imprinted control polymer synthesized under the same conditions, respectively, after a single step elution with acetone. The irradiated polymers and acetone were reused for an additional extraction-regeneration cycle and showed no capacity decrease
Template and target information: endocrine disrupters, 17β-estradiol, estrogens
Author keywords: endocrine disrupters, estrogens, Photodegradation, molecular imprinting, Trace contaminants