Bisphenol A (BPA) is an industrial pollutant considered as one of the major endocrine-disrupting chemicals found in natural waters. In the present study, the use of a commercial, air-stable, zero-valent iron (ZVI) powder, consisting of Fe0 surface stabilized nanoparticles was examined for the treatment of 20 mg/L, aqueous BPA solutions. The influence of pH (3, 5, 7), addition of hydrogen peroxide (HP) and persulfate (PS) oxidants (0.0, 1.25 and 2.5 mM) as well as temperature (25 and 50 °C) was studied for BPA treatment with 1 g/L ZVI. ZVI coupled with HP or PS provided an effective treatment system, which was based on rapid ZVI-mediated decomposition of the above-mentioned oxidants, resulting in complete BPA as well as significant total organic carbon (TOC) (88%) removals, in particular when PS was employed as the oxidant. Increasing the PS concentration and reaction temperature dramatically enhanced PS decomposition and BPA removal rates, whereas HP was not very effective in TOC removals and at elevated temperatures. According to the bioassays conducted with Vibrio fischeri and Pseudokirchneriella subcapitata, the acute toxicity of aqueous BPA fluctuated at first but decreased appreciably at the end of ZVI/PS treatment.
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Research Article|
April 08 2015
Treatment of aqueous bisphenol A using nano-sized zero-valent iron in the presence of hydrogen peroxide and persulfate oxidants Available to Purchase
B. Girit;
B. Girit
1Department of Environmental Engineering, School of Civil Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
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D. Dursun;
D. Dursun
1Department of Environmental Engineering, School of Civil Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
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T. Olmez-Hanci;
T. Olmez-Hanci
1Department of Environmental Engineering, School of Civil Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
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I. Arslan-Alaton
1Department of Environmental Engineering, School of Civil Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
E-mail: [email protected]
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Water Sci Technol (2015) 71 (12): 1859–1868.
Article history
Received:
January 22 2015
Accepted:
March 26 2015
Citation
B. Girit, D. Dursun, T. Olmez-Hanci, I. Arslan-Alaton; Treatment of aqueous bisphenol A using nano-sized zero-valent iron in the presence of hydrogen peroxide and persulfate oxidants. Water Sci Technol 1 June 2015; 71 (12): 1859–1868. doi: https://doi.org/10.2166/wst.2015.175
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