Photolysis and advanced oxidation treatment of estrogenic chemicals in tap water and treated sewage
DOI:
https://doi.org/10.15626/Eco-Tech.2007.089Keywords:
photolysis, estrogens, Electrical Energy per Order, AOP.Abstract
The removal efficiency by photolysis and advanced oxidation (AOP) of some estrogenic
compounds was investigated in tap water and biologically treated sewage. The compounds
investigated included parabens, industrial phenols, sunscreen chemicals and steroid estrogens.
Treatment experiments were performed using a UV lamp optimized for photochemical
treatment in a flow through set-up. The effect of different concentrations of H2O2 and
difference between tap water and treated sewage was investigated for all compounds.
The treatment effectiveness is evaluated based on the Electrical Energy per Order (EEO) (unit
kWh/111e3
), which is defined as the electrical energy consumed per unit volume of water treated
required for 90 % removal of the investigated compound.
It was found that the removal efficiency was better in tap water than in wastewater which is
due to the shadow effect from the inorganic and organic substance in the wastewater. Further,
it was found that the removal of all the compounds was dependent of the UV dose for both
treatment methods. The energy required for 90% removal of the compounds was between 28
kWh/111e3 ± 2.9 (butylparaben) and 1.2 kWh/ 111e3 (estrone) for the UY treatment. The AOP
results in a more unifom1 value of EEO, which is between 8. 7 kWh/m3 (bisphenol A and
benzophenone-7) and 1.8 kWh/m3 ( I 7a-ethynyl estradiol).
The removal at different concentration of H2O2 was investigated and it was found that
removal effectiveness increased with concentration until 60 mg/L, but decreased at I 00 mg/L,
which may be caused by H2O2 scavenging the HO'-radicals.
Metrics
References
Segner, H,, Caroll, K,, Fenske, M,, Janssen, C, Maack, G,, Pascoe, D,, Schafers, C, Vandenbergh, G,, Watts, M,, and Wenzel, A,, 2003, Identification of endocrinedisrupting effects in aquatic vertebrates and invertebrates: report from the European IDEA project, Ecotoxicology and Environmental Safety 54 (3 ), 302-314, https://doi.org/10.1016/S0147-6513(02)00039-8
Rosenfeldt, E, J_ and Linden, K, G, , 2004, Degradation of endocrine disrupting chemicals bisphenol a, ethinyl estradiol, and estradiol during uv photolysis and advanced oxidation processes, Environmental Science and Technology 38 (20), 5476-5483, https://doi.org/10.1021/es035413p
Chen, P,, Linden, K,, Hinton, D,, Kashiwada, S,, Rosenfeldt, E,, and Kullman, S, 2006, Biological assesesment of bisphenol a degradation in water following direct photolysis and uv advanced oxidation, Chemosphere 65 (7), 1094- 1102, https://doi.org/10.1016/j.chemosphere.2006.04.048
Neamtu, M_ and Frimmel, F,, 2006, Degradation of endocrine disrupting bisphenol A by 254nm irradiation in different water matrices and effect on yeast cells, Water Research 40 (20), 3745-3750, https://doi.org/10.1016/j.watres.2006.08.019
Bolton, J, R,, Bircher, K. G., Tumas, W., and Tolman, C, A., 2001. Figures-of-merit for the technical development and application of advanced oxidation technologies for both electric- and solar-driven systems, Pure and Applied Chemistry 73 (4), 627-638, https://doi.org/10.1351/pac200173040627
GraphPad Software Inc,, GraphPad Prism 5,0 - Regression Guide, http://www,graphpad,com/help/Prism5/, Septemper 18th, 2007,
Huber,MM,, Gi:ibel,A,, Joss,A,, Herrmann,N,, Li:iffler,D,, McArdell,CS., Reid,A,, Siegrist,H,, Ternes,T,A,, and von Gunten,U,, 2005, Oxidation of Phannaceuticals during Ozonation of Municipal Wastewater Effluentse: A Pilot Study, Environmental Science & Technology 39, 4290-4299, https://doi.org/10.1021/es048396s
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Copyright (c) 2007 Kamilla Hansen, Henrik R. Andersen, Tobias Hey, Anna Ledin
This work is licensed under a Creative Commons Attribution 4.0 International License.
