Simultaneous Degradation of Estrone, 17β-Estradiol and 17α-Ethinyl Estradiol in an Aqueous UV/H2O2 System
UV/H2O2, which is an advanced treatment technology used to reduce multiple contaminants, is effective in potable water treatment. Simultaneous degradation effects and kinetics of three types of coexisting micropollutant estrogens (steroid estrogens, SEs), including estrone (E1), 17β-estradiol (E2) a...
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doaj-3ee1d08343aa4b8d9f26883dcdd47af62020-11-25T00:25:31ZengMDPI AGInternational Journal of Environmental Research and Public Health1660-46012015-09-011210120161202910.3390/ijerph121012016ijerph121012016Simultaneous Degradation of Estrone, 17β-Estradiol and 17α-Ethinyl Estradiol in an Aqueous UV/H2O2 SystemXiaoyan Ma0Chao Zhang1Jing Deng2Yali Song3Qingsong Li4Yaping Guo5Cong Li6College of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Civil Engineering and Architecture, Zhejiang University of Technology, Hangzhou 310014, ChinaSchool of Civil Engineering and Architecture, Zhejiang University of Science and Technology, Hangzhou 310023, ChinaWater Resources and Environmental Institute, Xiamen University of Technology, Xiamen 361005, ChinaCollege of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaUV/H2O2, which is an advanced treatment technology used to reduce multiple contaminants, is effective in potable water treatment. Simultaneous degradation effects and kinetics of three types of coexisting micropollutant estrogens (steroid estrogens, SEs), including estrone (E1), 17β-estradiol (E2) and 17α-ethinyl estradiol (EE2), in deionized water were studied. Experiments were carried out with ultraviolet-C (UVC) radiation, together with hydrogen peroxide (H2O2), in a cylinder photoreactor. The results demonstrated that the degradation processes of all of the estrogens strongly fit first-order kinetics. Single solutions of E1, E2 and EE2 showed higher degradation rates and removal efficiencies under the same reaction conditions compared with those under mixed conditions. Coexisting combinations of estrogens were put into the UV/H2O2 system to estimate their possible competitive influences on each other by examining their removal efficiencies and reaction rate constant, k, values. E1 is predominantly reduced rapidly during the competition, while the presence of other estrogens has negligible impacts on E1; however, the degradation of E2 and EE2 is affected by the competitive background, not in relation to the types but to the existing amounts. In the UV/H2O2 system, photocatalysis of the estrogens can stably produce an intermediate X, with the highest quantity coming from E1, while considerably lower quantities are obtained from E2 and EE2.http://www.mdpi.com/1660-4601/12/10/12016UV/H2O2steroid estrogenscompetitive degradationphotocatalysiswater treatment |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiaoyan Ma Chao Zhang Jing Deng Yali Song Qingsong Li Yaping Guo Cong Li |
spellingShingle |
Xiaoyan Ma Chao Zhang Jing Deng Yali Song Qingsong Li Yaping Guo Cong Li Simultaneous Degradation of Estrone, 17β-Estradiol and 17α-Ethinyl Estradiol in an Aqueous UV/H2O2 System International Journal of Environmental Research and Public Health UV/H2O2 steroid estrogens competitive degradation photocatalysis water treatment |
author_facet |
Xiaoyan Ma Chao Zhang Jing Deng Yali Song Qingsong Li Yaping Guo Cong Li |
author_sort |
Xiaoyan Ma |
title |
Simultaneous Degradation of Estrone, 17β-Estradiol and 17α-Ethinyl Estradiol in an Aqueous UV/H2O2 System |
title_short |
Simultaneous Degradation of Estrone, 17β-Estradiol and 17α-Ethinyl Estradiol in an Aqueous UV/H2O2 System |
title_full |
Simultaneous Degradation of Estrone, 17β-Estradiol and 17α-Ethinyl Estradiol in an Aqueous UV/H2O2 System |
title_fullStr |
Simultaneous Degradation of Estrone, 17β-Estradiol and 17α-Ethinyl Estradiol in an Aqueous UV/H2O2 System |
title_full_unstemmed |
Simultaneous Degradation of Estrone, 17β-Estradiol and 17α-Ethinyl Estradiol in an Aqueous UV/H2O2 System |
title_sort |
simultaneous degradation of estrone, 17β-estradiol and 17α-ethinyl estradiol in an aqueous uv/h2o2 system |
publisher |
MDPI AG |
series |
International Journal of Environmental Research and Public Health |
issn |
1660-4601 |
publishDate |
2015-09-01 |
description |
UV/H2O2, which is an advanced treatment technology used to reduce multiple contaminants, is effective in potable water treatment. Simultaneous degradation effects and kinetics of three types of coexisting micropollutant estrogens (steroid estrogens, SEs), including estrone (E1), 17β-estradiol (E2) and 17α-ethinyl estradiol (EE2), in deionized water were studied. Experiments were carried out with ultraviolet-C (UVC) radiation, together with hydrogen peroxide (H2O2), in a cylinder photoreactor. The results demonstrated that the degradation processes of all of the estrogens strongly fit first-order kinetics. Single solutions of E1, E2 and EE2 showed higher degradation rates and removal efficiencies under the same reaction conditions compared with those under mixed conditions. Coexisting combinations of estrogens were put into the UV/H2O2 system to estimate their possible competitive influences on each other by examining their removal efficiencies and reaction rate constant, k, values. E1 is predominantly reduced rapidly during the competition, while the presence of other estrogens has negligible impacts on E1; however, the degradation of E2 and EE2 is affected by the competitive background, not in relation to the types but to the existing amounts. In the UV/H2O2 system, photocatalysis of the estrogens can stably produce an intermediate X, with the highest quantity coming from E1, while considerably lower quantities are obtained from E2 and EE2. |
topic |
UV/H2O2 steroid estrogens competitive degradation photocatalysis water treatment |
url |
http://www.mdpi.com/1660-4601/12/10/12016 |
work_keys_str_mv |
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