Tags

Type your tag names separated by a space and hit enter

Photocatalytic degradation of carbamazepine and three derivatives using TiO₂ and ZnO: effect of pH, ionic strength, and natural organic matter.
Sci Total Environ. 2014 Mar 15; 475:16-22.ST

Abstract

Removal of pharmaceuticals (PhCs) by photocatalysis is a promising avenue in water treatment. The efficiency of these treatments on PhC derivatives compared to their parent molecules remains poorly documented. The present study investigates the efficiency of photodegradation catalyzed by TiO₂ and ZnO nanoparticles on the removal of carbamazepine (CBZ) and three of its derivatives; carbamazepine epoxide (CBZ-E), acridine (AI), and acridone (AO). The effects of environmental parameters such as pH, ionic strength, and natural organic matter content on photodegradation efficiency (transformation after 6h and kinetics) were tested. We report that the efficiency of the catalysts (TiO2 and ZnO) can be very different when comparing CBZ and its derivatives (CBZ-E, AI and AO). TiO₂ was more efficient than ZnO at degrading CBZ and CBZ-E. For AI and AO, no significant differences were observed between the two catalysts. We also report that environmental parameters have contrasting effects on the efficiency of the photodegradation of CBZ compared to its derivatives. Changing pH and organic matter content had the most contrasted effects; the photodegradation of CBZ and CBZ-E was significantly affected by pH (especially in presence of TiO₂ NPs) and by the presence of natural organic matter. In contrast, the photodegradation of AI and AO was not affected by pH and organic matter. Only the photodegradation of CBZ was clearly affected by IS and solely at very high IS (1M). Overall, our results highlight that TiO₂ and ZnO catalysts present contrasted efficiency on the removal of CBZ when compared to its derivatives (CBZ-E, AI and AO). Our results also show that the effect of environmental parameters on the efficiency of the photodegradation of CBZ derivatives cannot be predicted based on the behavior of the parent molecule (CBZ).

Authors+Show Affiliations

Department of Chemistry, Université de Sherbrooke, 2500 Boul. de l'Université, Sherbrooke, (Qc) J1K 2R1, Canada.Department of Chemistry, Université de Sherbrooke, 2500 Boul. de l'Université, Sherbrooke, (Qc) J1K 2R1, Canada.Department of Chemistry, Université de Sherbrooke, 2500 Boul. de l'Université, Sherbrooke, (Qc) J1K 2R1, Canada.Department of Chemistry, Université de Sherbrooke, 2500 Boul. de l'Université, Sherbrooke, (Qc) J1K 2R1, Canada.Department of Chemistry, Université de Sherbrooke, 2500 Boul. de l'Université, Sherbrooke, (Qc) J1K 2R1, Canada. Electronic address: Jean-Philippe.Bellenger@USherbrooke.ca.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24423939

Citation

Haroune, Lounes, et al. "Photocatalytic Degradation of Carbamazepine and Three Derivatives Using TiO₂ and ZnO: Effect of pH, Ionic Strength, and Natural Organic Matter." The Science of the Total Environment, vol. 475, 2014, pp. 16-22.
Haroune L, Salaun M, Ménard A, et al. Photocatalytic degradation of carbamazepine and three derivatives using TiO₂ and ZnO: effect of pH, ionic strength, and natural organic matter. Sci Total Environ. 2014;475:16-22.
Haroune, L., Salaun, M., Ménard, A., Legault, C. Y., & Bellenger, J. P. (2014). Photocatalytic degradation of carbamazepine and three derivatives using TiO₂ and ZnO: effect of pH, ionic strength, and natural organic matter. The Science of the Total Environment, 475, 16-22. https://doi.org/10.1016/j.scitotenv.2013.12.104
Haroune L, et al. Photocatalytic Degradation of Carbamazepine and Three Derivatives Using TiO₂ and ZnO: Effect of pH, Ionic Strength, and Natural Organic Matter. Sci Total Environ. 2014 Mar 15;475:16-22. PubMed PMID: 24423939.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytic degradation of carbamazepine and three derivatives using TiO₂ and ZnO: effect of pH, ionic strength, and natural organic matter. AU - Haroune,Lounes, AU - Salaun,Maria, AU - Ménard,Alain, AU - Legault,Claude Y, AU - Bellenger,Jean-Philippe, Y1 - 2014/01/11/ PY - 2013/10/23/received PY - 2013/12/06/revised PY - 2013/12/22/accepted PY - 2014/1/16/entrez PY - 2014/1/16/pubmed PY - 2014/9/11/medline KW - Carbamazepine KW - Derivatives KW - Environmental parameters KW - Nanoparticles KW - Photocatalysis SP - 16 EP - 22 JF - The Science of the total environment JO - Sci Total Environ VL - 475 N2 - Removal of pharmaceuticals (PhCs) by photocatalysis is a promising avenue in water treatment. The efficiency of these treatments on PhC derivatives compared to their parent molecules remains poorly documented. The present study investigates the efficiency of photodegradation catalyzed by TiO₂ and ZnO nanoparticles on the removal of carbamazepine (CBZ) and three of its derivatives; carbamazepine epoxide (CBZ-E), acridine (AI), and acridone (AO). The effects of environmental parameters such as pH, ionic strength, and natural organic matter content on photodegradation efficiency (transformation after 6h and kinetics) were tested. We report that the efficiency of the catalysts (TiO2 and ZnO) can be very different when comparing CBZ and its derivatives (CBZ-E, AI and AO). TiO₂ was more efficient than ZnO at degrading CBZ and CBZ-E. For AI and AO, no significant differences were observed between the two catalysts. We also report that environmental parameters have contrasting effects on the efficiency of the photodegradation of CBZ compared to its derivatives. Changing pH and organic matter content had the most contrasted effects; the photodegradation of CBZ and CBZ-E was significantly affected by pH (especially in presence of TiO₂ NPs) and by the presence of natural organic matter. In contrast, the photodegradation of AI and AO was not affected by pH and organic matter. Only the photodegradation of CBZ was clearly affected by IS and solely at very high IS (1M). Overall, our results highlight that TiO₂ and ZnO catalysts present contrasted efficiency on the removal of CBZ when compared to its derivatives (CBZ-E, AI and AO). Our results also show that the effect of environmental parameters on the efficiency of the photodegradation of CBZ derivatives cannot be predicted based on the behavior of the parent molecule (CBZ). SN - 1879-1026 UR - https://www.unboundmedicine.com/medline/citation/24423939/Photocatalytic_degradation_of_carbamazepine_and_three_derivatives_using_TiO₂_and_ZnO:_effect_of_pH_ionic_strength_and_natural_organic_matter_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0048-9697(13)01587-8 DB - PRIME DP - Unbound Medicine ER -