000267087 001__ 267087
000267087 005__ 20190626075536.0
000267087 022__ $$a0263-8762
000267087 022__ $$a1744-3563
000267087 02470 $$a000465049200026$$2isi
000267087 0247_ $$a10.1016/j.cherd.2019.02.015$$2doi
000267087 037__ $$aARTICLE
000267087 245__ $$aPhotocatalytic degradation of binary and ternary mixtures of antibiotics: reactive species investigation in pilot scale
000267087 260__ $$c2019$$aRugby$$bINST CHEMICAL ENGINEERS
000267087 269__ $$a2019-04-01
000267087 336__ $$aJournal Articles
000267087 520__ $$aThe present study investigates the photocatalytic degradation of three quinolone antibiotics (i.e., Flumequine (FLU), Oxolinic Acid (OA) and Nalidixic Acid (NA)) in mono-, binary and ternary compound systems. The closed-loop step photo-reactor and TiO2 impregnated on cellulosic paper as supported photo-catalyst in presence of UV light irradiation were used. The degradation of FLU occurred within 4 h. A 65.4% mineralization of OA was observed in a mono-compound system, due to the fast conversion of these main by-products formed. Besides, the investigation of the contribution of free radicals revealed the involvement of hole (h(+)), O-2(center dot-), but mainly "OH on the degradation of OA. The second-order kinetic rate constants calculated relative to the contribution of (OH)-O-center dot radicals on the degradation of OA was 4.03 x 10(9) M(-1)s(-1), whereas for that of NA was 4.42 x 10(9) M(-1)s(-1), thus underscoring that (OH)-O-center dot coproduct is the primary reactive species implicated in the photocatalytic degradation of these compounds on TiO2/cellulosic paper catalysts. The mono-compound system shows a higher degradation rate compared to multi-compound system (binary and ternary) which explained by the competitive adsorption of antibiotics on the available active sites of photocatalyst surface. Overall, the constant photocatalytic rates are higher following this order: mono compound system > ternary mixture >binary mixture. The catalyst was characterized by mean of FTIR, HR-TEM and XRD. The SiO2-binder role was discussed in details based on the atomic distribution of elements on the cellulose fibers as shown by the EDS atomic mapping. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
000267087 650__ $$aEngineering, Chemical
000267087 650__ $$aEngineering
000267087 6531_ $$aantibiotic mixture
000267087 6531_ $$aphotocatalytic degradation
000267087 6531_ $$amono-compound system
000267087 6531_ $$abinary/temary compounds system
000267087 6531_ $$aradical scavengers
000267087 6531_ $$asurface characterization
000267087 6531_ $$adielectric barrier discharge
000267087 6531_ $$awaste-water
000267087 6531_ $$aphotochemical fate
000267087 6531_ $$aadvanced oxidation
000267087 6531_ $$arisk-assessment
000267087 6531_ $$atio2
000267087 6531_ $$akinetics
000267087 6531_ $$aremoval
000267087 6531_ $$aphotodegradation
000267087 6531_ $$apharmaceuticals
000267087 700__ $$aZeghioud, Hichem
000267087 700__ $$aKamagate, Mahamadou
000267087 700__ $$aCoulibaly, Lassina Sandotin
000267087 700__ $$aRtimi, Sami$$0247403$$g216848
000267087 700__ $$aAssadi, Aymen Amine
000267087 773__ $$j144$$q300-309$$tChemical Engineering Research & Design
000267087 8560_ $$fsami.rtimi@epfl.ch
000267087 909C0 $$yApproved$$pGPAO$$xU12575$$msami.rtimi@epfl.ch$$zBorel, Alain$$0252422
000267087 909CO $$particle$$ooai:infoscience.epfl.ch:267087$$pSB
000267087 961__ $$apierre.devaud@epfl.ch
000267087 973__ $$aEPFL$$sPUBLISHED$$rREVIEWED
000267087 980__ $$aARTICLE
000267087 980__ $$aWoS
000267087 981__ $$aoverwrite