Impact of water quality on removal of carbamazepine in natural waters by N-doped TiO photo-catalytic thin film surfaces
Avisar, D, Horovitz, I, Mamane, H, Lozzi, L, Ruggieri, F, Baker, M and Abel, M-L (2013) Impact of water quality on removal of carbamazepine in natural waters by N-doped TiO photo-catalytic thin film surfaces Journal of Hazardous Materials, 244-24. pp. 463-471.
Impact of water quality on TiON Photo- Final 1.pdf
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Photocatalytic experiments on the pharmaceutical pollutant carbamazepine (CBZ) were conducted using sol-gel nitrogen-doped TiO-coated glass slides under a solar simulator. CBZ was stable to photodegradation under direct solar irradiation. No CBZ sorption to the catalyst surface was observed, as further confirmed by surface characterization using X-ray photoelectron spectroscopic analysis of N-doped TiO surfaces. When exposing the catalyst surface to natural organic matter (NOM), an excess amount of carbon was detected relative to controls, which is consistent with NOM remaining on the catalyst surface. The catalyst surface charge was negative at pH values from 4 to 10 and decreased with increasing pH, correlated with enhanced CBZ removal with increasing medium pH in the range of 5-9. A dissolved organic carbon concentration of 5mg/L resulted in ∼20% reduction in CBZ removal, probably due to competitive inhibition of the photocatalytic degradation of CBZ. At alkalinity values corresponding to CaCO addition at 100mg/L, an over 40% decrease in CBZ removal was observed. A 35% reduction in CBZ occurred in the presence of surface water compared to complete suppression of the photocatalytic process in wastewater effluent. © 2012 Elsevier B.V.
|Divisions :||Faculty of Engineering and Physical Sciences > Mechanical Engineering Sciences|
|Date :||5 January 2013|
|Identification Number :||https://doi.org/10.1016/j.jhazmat.2012.09.058|
|Additional Information :||NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Hazardous Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hazardous Materials 244-245, January 2013, DOI 10.1016/j.jhazmat.2012.09.058.|
|Depositing User :||Symplectic Elements|
|Date Deposited :||09 Aug 2013 08:14|
|Last Modified :||07 Jun 2015 01:35|
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