Photocatalytic (UV-A/TiO2) degradation and photolytic (UV-A) degradation of steroid hormones: norethisterone and danazol in aqueous medium
نویسندگان
چکیده
In this paper, the photocatalytic (UV-A/TiO2) degradation of two steroid hormones: norethisterone and danazol in aqueous medium has been studied using immobilized titanium dioxide as photocatalyst. The photolytic degradation (degradation without photocatalyst) of the two hormones was also investigated. UV-A irradiation was provided by black light lamp 18 W. The photocatalytic and photolytic degradation of investigated steroid hormones demonstrated first-order kinetics. The effect of H2O2 has been investigated. It was found that the high concentrations of H2O2 had an adverse effect on photocatalytic reaction, presumably due to excessive oxidant scavenging radicals and other reactive species. Results clearly demonstrate the efficiency of the photocatalytic and photolytic degradation in the elimination of norethisterone and danazol in aqueous medium.
منابع مشابه
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