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Article

N-Doped TiO2-Coated Ceramic Membrane for Carbamazepine Degradation in Different Water Qualities

1
The Water Research Center, School of Earth Sciences, Faculty of Exact Sciences, Tel Aviv University, Tel Aviv 69978, Israel
2
Department of Physical and Chemical Sciences, University of L’Aquila, Via Vetoio, I-67100 L’Aquila, Italy
3
The Surface Analysis Laboratory, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
4
School of Mechanical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv 69978, Israel
*
Author to whom correspondence should be addressed.
Nanomaterials 2017, 7(8), 206; https://doi.org/10.3390/nano7080206
Received: 31 May 2017 / Revised: 21 July 2017 / Accepted: 28 July 2017 / Published: 31 July 2017
(This article belongs to the Special Issue Nanomaterials for Water Treatment)
The photocatalytic degradation of the model pollutant carbamazepine (CBZ) was investigated under simulated solar irradiation with an N-doped TiO2-coated Al2O3 photocatalytic membrane, using different water types. The photocatalytic membrane combines photocatalysis and membrane filtration in a single step. The impact of each individual constituent such as acidity, alkalinity, dissolved organic matter (DOM), divalent cations (Mg2+ and Ca2+), and Cl on the degradation of CBZ was examined. CBZ in water was efficiently degraded by an N-doped TiO2-coated Al2O3 membrane. However, elements added to the water, which simulate the constituents of natural water, had an impact on the CBZ degradation. Water alkalinity inhibited CBZ degradation mostly due to increase in pH while radical scavenging by carbonate was more dominant at higher values (>200 mg/L as CaCO3). A negative effect of Ca2+ addition on photocatalytic degradation was found only in combination with phosphate buffer, probably caused by deposition of CaHPO4 or CaHPO4·2H2O on the catalyst surface. The presence of Cl and Mg2+ ions had no effect on CBZ degradation. DOM significantly inhibited CBZ degradation for all tested background organic compounds. The photocatalytic activity of N-doped TiO2-coated Al2O3 membranes gradually decreased after continuous use; however, it was successfully regenerated by 0.1% HCl chemical cleaning. Nevertheless, dissolution of metals like Al and Ti should be monitored following acid cleaning. View Full-Text
Keywords: photocatalytic membrane; N-doped TiO2; water treatment; water quality; radical scavenging; membrane regeneration photocatalytic membrane; N-doped TiO2; water treatment; water quality; radical scavenging; membrane regeneration
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MDPI and ACS Style

Luster, E.; Avisar, D.; Horovitz, I.; Lozzi, L.; Baker, M.A.; Grilli, R.; Mamane, H. N-Doped TiO2-Coated Ceramic Membrane for Carbamazepine Degradation in Different Water Qualities. Nanomaterials 2017, 7, 206. https://doi.org/10.3390/nano7080206

AMA Style

Luster E, Avisar D, Horovitz I, Lozzi L, Baker MA, Grilli R, Mamane H. N-Doped TiO2-Coated Ceramic Membrane for Carbamazepine Degradation in Different Water Qualities. Nanomaterials. 2017; 7(8):206. https://doi.org/10.3390/nano7080206

Chicago/Turabian Style

Luster, Enbal, Dror Avisar, Inna Horovitz, Luca Lozzi, Mark A. Baker, Rossana Grilli, and Hadas Mamane. 2017. "N-Doped TiO2-Coated Ceramic Membrane for Carbamazepine Degradation in Different Water Qualities" Nanomaterials 7, no. 8: 206. https://doi.org/10.3390/nano7080206

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