Analysis on the Degradation of Environmental Estrogen 17β-estradiol by Ultraviolet(UV) Light-activated Sodium Persulfate

doi:10.12068/j.issn.1005-3026.2016.06.025

Abstract

Abstract: The problem of environmental estrogens caused wide spread concern in natural water， using low pressure mercury lamps activated sodium persulfate (PS) composite system to degrade 17β-estradiol (E2)of residual in the water which is a typical environmental estrogens. The effect of different initial pH， sodium persulfate concentration， common anions(Cl^-，HCO^-₃，NO^-₃) on degradation of E2 and the mechanism of reaction kinetics were investigated. The results showed that the degradation of E2 by UV/PS system follows pseudo-first-order kinetic model and the optimum pH is 7.0， the removal of E2 increases with adding the sodium persulfate concentration， the environmental anion may promote the degradation of E2. It is demonstrated that the principal free radical is·SO^-₄ in the system. This study provides a strong theoretical basis for UV/PS advanced oxidation degradation of environmental estrogen.

Key words: ultraviolet, sulfate radical, 17β-estradiol, impact factors, mechanism

CLC Number:

X131.2

GUO Hong-guang， LIU Yang， ZHANG Yong-li. Analysis on the Degradation of Environmental Estrogen 17β-estradiol by Ultraviolet(UV) Light-activated Sodium Persulfate[J]. Journal of Northeastern University Natural Science, 2016, 37(6): 880-885.

References

[1]Liu Z，Kanjo Y，Mizutani S.Removal mechanisms for endocrine disrupting compounds (EDCs) in waste water treatment — physical means，biodegradation，and chemical advanced oxidation:a review ［J］.Science of the Total Environment，2009，407(2):731-748.
[2]Fowler P A，Bellingham M，Sinclair K D，et al.Impact of endocrine-disrupting compounds (EDCs) on female reproductive health ［J］.Molecular and Cellular Endocrinology，2012，355(2):231-239.
[3]Andersen H，Siegrist H，Halling-Srensen B，et al.Fate of estrogens in a municipal sewage treatment plant［J］.Environmental Science & Technology，2003，37(18):4021-4026.
[4]Ahmad M，Teel A L，Watts R J.Mechanism of persulfate activation by phenols［J］.Environmental Science & Technology，2013，47(11):5864-5871.
[5]郭洪光，高乃云，张永丽，等.热激活过硫酸盐降解水中典型氟喹诺酮抗生素分析［J］.四川大学学报(工程科学版)，2015，47(2):191-197.(Guo Hong-guang，Gao Nai-yun，Zhang Yong-li，et al.Analysis on the degradation of typical fluoyoquinolone in the water by thermally actived persulfate［J］.Journal of Sichuan University (Engineering Science Edition)，2015，47(2):191-197.)
[6]Yu C，Wu C，Ho T，et al.Decolorization of C.I.reactive black 5 in UV/TiO₂，UV/oxidant and UV/TiO₂/oxidant systems:a comparative study［J］.Chemical Engineering Journal，2010，158(3):578-583.
[7]Kwon M，Kim S，Yoon Y，et al.Comparative evaluation of ibuprofen removal by UV/H₂O₂ and UV/S₂O^2-8 processes for wastewater treatment［J］.Chemical Engineering Journal，2015，269(1):379-390.
[8]高乃云，朱延平，谈超群，等.热激活过硫酸盐氧化法降解敌草隆［J］.华南理工大学学报(自然科学版)，2013，41(12):36-42.(Gao Nai-yun，Zhu Yan-ping，Tan Chao-qun，et al.Degradation of diuron via heat-activated persulfate oxidation［J］.Journal of South China University of Technology(Natural Science Edition)，2013，41(12):36-42.)
[9]Liang C，Wang Z，Bruell C J.Influence of pH on persulfate oxidation of TCE at ambient temperatures ［J］.Chemosphere，2007，66(1):106-113.
[10]Wicktor F，Donati A，Herrmann H，et al.Laser based spectroscopic and kinetic investigations of reactions of the Cl atom with oxygenated hydrocarbons in aqueous solution［J］.Physical Chemistry Chemical Physics，2003，5(12):2562-2572.
[11]Criquet J，Leitner N K V.Degradation of acetic acid with sulfate radical generated by persulfate ions photolysis ［J］.Chemosphere，2009，77(2):194-200.
[12]Ghauch A，Tuqan A M.Oxidation of bisoprolol in heated persulfate/H₂O systems:kinetics and products［J］.Chemical Engineering Journal，2012，183:162-171.
[13]Peternel I，Grcic I，Koprivanac N.Degradation of reactive azo dye by UV/peroxodisulfate system:an experimental design approach［J］.Reaction Kinetics，Mechanisms and Catalysis，2010，100(1):33-44.
[14]Liu X，Fang L，Zhou Y，et al.Comparison of UV/PDS and UV/H₂O₂ processes for the degradation of atenolol in water［J］.Journal of Environmental Sciences，2013，25(8):1519-1528.
[15]Liang C，Su H.Identification of sulfate and hydroxyl radicals in thermally activated persulfate［J］.Industrial & Engineering Chemistry Research，2009，48(11):5558-5562.