000220248 001__ 220248
000220248 005__ 20190604054707.0
000220248 0247_ $$2doi$$a10.1016/j.jenvman.2016.07.004
000220248 022__ $$a0301-4797
000220248 02470 $$2ISI$$a000403864500011
000220248 037__ $$aARTICLE
000220248 245__ $$aIohexol degradation in wastewater and urine by UV-based Advanced Oxidation Processes (AOPs): Process modeling and by-products identification
000220248 260__ $$bElsevier$$c2017$$aLondon
000220248 269__ $$a2017
000220248 300__ $$a12
000220248 336__ $$aJournal Articles
000220248 520__ $$aIn this work, an Iodinated Contrast Medium (ICM), Iohexol, was subjected to treatment by 3 Advanced Oxidation Processes (AOPs) (UV, UV/H2O2, UV/H2O2/Fe2+). Water, wastewater and urine were spiked with Iohexol, in order to investigate the treatment efficiency of AOPs. A tri-level approach has been deployed to assess the UV-based AOPs efficacy. The treatment was heavily influenced by the UV transmittance and the organics content of the matrix, as dilution and acidification improved the degradation but iron/H2O2 increase only moderately. Furthermore, optimization of the treatment conditions, as well as modeling of the degradation was performed, by step-wise constructed quadratic or product models, and determination of the optimal operational regions was achieved through desirability functions. Finally, global chemical parameters (COD, TOC and UV-Vis absorbance) were followed in parallel with specific analyses to elucidate the degradation process of Iohexol by UV-based AOPs. Through HPLC/MS analysis the degradation pathway and the effects the operational parameters were monitored, thus attributing the pathways the respective modifications. The addition of iron in the UV/H2O2 process inflicted additional pathways beneficial for both Iohexol and organics removal from the matrix.
000220248 6531_ $$aIodinated Contrast Media
000220248 6531_ $$aWastewater treatment
000220248 6531_ $$aUrine purification
000220248 6531_ $$aModeling and optimization
000220248 6531_ $$aDegradation pathway
000220248 6531_ $$aAdvanced Oxidation Process
000220248 700__ $$0247901$$g229180$$aGiannakis, Stefanos
000220248 700__ $$0248388$$g251155$$aJovic, Milica
000220248 700__ $$0244747$$g207324$$aGasilova, Natalia
000220248 700__ $$aPastor Gelabert, Miquel
000220248 700__ $$aSchindelholz, Simon
000220248 700__ $$aFurbringer, Jean-Marie
000220248 700__ $$0242739$$g105258$$aGirault, Hubert
000220248 700__ $$0240005$$g106159$$aPulgarin, César
000220248 773__ $$j195$$tJournal of Environmental Management$$q174-185
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000220248 8564_ $$uhttps://infoscience.epfl.ch/record/220248/files/1-s2.0-S0301479716304418-main.pdf$$zPublisher's version$$s2491436$$yPublisher's version
000220248 909C0 $$xU10100$$0252090$$pLEPA
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000220248 909CO $$qGLOBAL_SET$$pSB$$particle$$ooai:infoscience.tind.io:220248
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000220248 937__ $$aEPFL-ARTICLE-220248
000220248 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000220248 980__ $$aARTICLE