Solar photocatalytic degradation of persistent pharmaceuticals at pilot-scale: Kinetics and characterization of major intermediate products

Radjenovic, Jelena, Sirtori, Carla, Petrovic, Mira, Barcelo, Damia and Malato, Sixto (2009) Solar photocatalytic degradation of persistent pharmaceuticals at pilot-scale: Kinetics and characterization of major intermediate products. Applied Catalysis B: Environmental, 89 1-2: 255-264. doi:10.1016/j.apcatb.2009.02.013


Author Radjenovic, Jelena
Sirtori, Carla
Petrovic, Mira
Barcelo, Damia
Malato, Sixto
Title Solar photocatalytic degradation of persistent pharmaceuticals at pilot-scale: Kinetics and characterization of major intermediate products
Journal name Applied Catalysis B: Environmental   Check publisher's open access policy
ISSN 0926-3373
1873-3883
Publication date 2009-07-03
Sub-type Article (original research)
DOI 10.1016/j.apcatb.2009.02.013
Volume 89
Issue 1-2
Start page 255
End page 264
Total pages 10
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Formatted abstract
The technical feasibility and performance of photocatalytic degradation of anti-inflammatory drug acetaminophen (ACTP) and β-blocker atenolol (ATL) have been studied in a well-defined system of a pilot-plant scale Compound Parabolic Collectors (CPCs) under natural illumination. Heterogeneous photocatalysis with titanium dioxide (TiO2) and homogeneous photocatalysis by photo-Fenton were investigated with two different matrices: distilled water and synthetic municipal wastewater treatment plant effluent (S.E.). The initial concentrations of the pharmaceuticals studied were 10 mg L−1, whereas the concentrations of the catalysts employed were 200 mg L−1 of TiO2 and 5 mg L−1 of iron. Total disappearance of the parent compounds and discreet mineralization were attained in all experiments. Furthermore, kinetic parameters, release of heteroatoms and formation of carboxylic acids are discussed. The main intermediate products of photocatalytic degradation of atelonol has been structurally elucidated by tandem mass spectrometry (MS2) experiments performed at quadrupole-time of flight (QqToF) mass analyzer coupled to ultra-performance liquid chromatograph (UPLC). Six transformation products were characterized, formed by consecutive attacks of hydroxyl (radical dotOH) radical in concomitance with the disappearance of the primary compound. The proposed TiO2 and photo-Fenton degradation route of ATL is reported for the first time.
Keyword Acetaminophen
Atenolol
Intermediate products
Solar TiO2 photocatalysis
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: ERA 2012 Admin Only
Advanced Water Management Centre Publications
 
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Created: Thu, 12 Jan 2012, 13:25:31 EST by Dr Jelena Radjenovic on behalf of Advanced Water Management Centre