@misc{10481/88227,
year = {2018},
month = {2},
url = {https://hdl.handle.net/10481/88227},
abstract = {Degradation and mineralization of ibuprofen (IBU) were investigated using Ultraviolet (UV) Light Emitting Diodes (LEDs) in TiO2 photocatalysis. Samples of ultrapure water (UP) and a secondary treated effluent of a municipal wastewater treatment plant (WWTP), both spiked with IBU, as well as a highly concentrated IBU (230 mg L−1) pharmaceutical industry wastewater (PIWW), were tested in the TiO2/UV-LED system. Three operating parameters, namely, pH, catalyst load and number of LEDs were optimized. The process efficiency was evaluated in terms of IBU removal using high performance liquid chromatography (HPLC) and ultra-high performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS). Additionally, the mineralization was investigated by determining the dissolved organic carbon (DOC) content. The chemical structures of transformation products were proposed based on the data obtained using liquid chromatography with a high resolution mass spectrometer ion trap/time-of-flight (LC-MS-IT-TOF). A possible pathway of IBU degradation was accordingly suggested. Bioassays were performed using the marine bacterium Vibrio fischeri to evaluate the potential acute toxicity of original and treated wastewaters. TiO2 heterogeneous photocatalysis was efficient to remove IBU from UP and from PIWW, and less efficient in treating the wastewater from the municipal WWTP. The acute toxicity decreased by ca. 40% after treatment, regardless of the studied matrix.},
organization = {Financial support for this work was provided by project “AIProcMat@N2020 – Advanced Industrial Processes and Materials for a Sustainable Northern Region of Portugal 2020”, with the reference NORTE-01-0145-FEDER-000006, supported by Norte Portugal Regional Operational Programme (NORTE 2020), under the Portugal 2020 Partnership Agreement, through the European Regional Development Fund (ERDF) and of Project POCI-01-0145-FEDER-006984 – Associate Laboratory LSRE-LCM funded by ERDF through COMPETE2020 – Programa Operacional Competitividade e Internacionalização (POCI) – and by national funds through FCT - Fundação para a Ciência e a Tecnologia. LMPM and AMTS acknowledge the FCT Investigator program (IF/01248/2014 and IF/01501/2013, respectively), with financing from the European Social Fund and the Human Potential Operational Program. ARR and NFFM acknowledge the research grants from FCT (Ref. SFRH/BPD/101703/2014 and PD/BD/114318/2016, respectively), with financing from the European Social Fund and the Human Potential Operational Programme. NJ acknowledges the support of the Tunisian Ministry of Higher Education and Scientific Research and Sfax University in the form of an International Travel Grant, which enabled him to perform this work. The authors are grateful to Dr. Sven Vedder (Shimadzu Europa) for the LC-MS-IT-TOF analyses},
publisher = {Elsevier},
keywords = {Ibuprofen},
keywords = {TiO2},
keywords = {Municipal wastewater},
keywords = {Pharmaceutical industry},
keywords = {UV-LEDs},
keywords = {Acute toxicity},
title = {Heterogeneous photocatalytic degradation of ibuprofen in ultrapure water, municipal and pharmaceutical industry wastewaters using a UV-LEDs/TiO2 system},
doi = {10.1016/j.cej.2017.10.045},
author = {Jallouli, Nabil and Pastrana Martínez, Luisa María and Ribeiro, Ana R. and Moreira, Nuno F.F. and Faria, Joaquim L. and Hentani, Olfa and Silva, Adrián M.T. and Ksibi, Mohamed},
}