Fernández-Alvarez Paula, Le Noir Mathieu, Guieysse Benoit
Department of Biotechnology, Lund University, P.O. Box 124, 22100 Lund, Sweden.
J Hazard Mater. 2009 Apr 30;163(2-3):1107-12. doi: 10.1016/j.jhazmat.2008.07.085. Epub 2008 Jul 26.
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), 17beta-estradiol (E2) and ethinylestradiol (EE2) using either UVC (254 nm) or UV-vis. A MIP synthesized with E2 as template was then tested for the extraction of this compound from a 2 microg/L loaded aqueous solution. E2 was recovered by 73+/-11% and 46+/-13% 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.
本研究提出了一种再生分子印迹聚合物（MIPs）的方法，该聚合物用于从水性废水中选择性去除内分泌干扰化合物。再生基于紫外线照射下的溶剂萃取，以再生聚合物和溶剂，同时破坏污染物。选择丙酮作为使用UVC（254 nm）或紫外可见光谱照射雌酮（E1）、17β-雌二醇（E2）和乙炔雌二醇（EE2）的最佳溶剂。然后测试了以E2为模板合成的MIP从2μg/L负载水溶液中萃取该化合物的性能。在用丙酮进行单步洗脱后，分别从MIP和在相同条件下合成的非印迹对照聚合物中回收了73±11%和46±13%的E2。辐照后的聚合物和丙酮可重复用于额外的萃取-再生循环，且未显示出容量下降。
