Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 278, Issue -, Pages 16-24Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2014.05.078
Keywords
Estrone (E1); Secondary effluent; AOP; Total organic carbon; Yeast estrogen screen assay
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Funding
- Natural Sciences and Engineering Research Council (NSERC)
- Trojan Technologies, Inc., Canada
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A comprehensive study was conducted to determine the relative efficacy of various advanced oxidation processes such as O-3, H2O2, UV, and combinations of UV/O-3, UV/H2O2 for the removal of estrone (E1) from pure water and secondary effluent. In addition to the parent compound (El) removal, performance of the advanced oxidation processes was characterized using removal of total organic carbon (TOC), and estrogenicity of the effluent. Although E1 removal was high for all the AOPs, intermediates formed were more difficult to degrade leading to slow TOC removal. Energy calculations and cost analysis indicated that, although UV processes have low electricity cost, ozonation is the least cost option ($ 0.34/1000 gallons) when both capital and operating costs were taken into account. Ozonation also is superior to the other tested AOPs due to higher removal of TOC and estrogenicity. The rate of E1 removal decreased linearly with the background TOC in water, however, E1 degradation in the secondary effluent from a local wastewater treatment plant was not affected significantly due to the low COD values in the effluent. (C) 2014 Elsevier B.V. All rights reserved.
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