Photodegradation of 17α-ethynylestradiol in aqueous solution exposed to a high-pressure mercury lamp (250 W)

摘要

The photodegradation of 17α-ethynylestradiol (EE_2) induced by high-pressure mercury lamp (w>313, 250 W) in aqueous solution of EE_2 was investigated initially. The affecting factors on the photodegradation were studied and described in details, such as EE_2 initial concentration, Fe~(3+), algae, exposure time, and so on. The concentration of EE_2 in distilled water was mainly determined using fluorescence spectrophotometer. The photodegradation of EE_2 in aqueous solution exposed to high-pressure mercury lamp was evident and could be accelerated by Fe~(3+) or algae (e.g. Anabaena cylindrica) in general. With the algae concentration increasing, photodegradation rate increased. In this paper, the mechanism of photocatalytic degradation of EE_2 by Fe~(3+) or algae is discussed primarily.