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Docta Complutense author Merayo Cuevas, Noemí author Hermosilla Redondo, María Daphne author Negro Álvarez, Carlos Manuel author Blanco Suárez, María Ángeles 2023-06-20T03:48:58Z 2023-06-20T03:48:58Z 2013 Merayo, Noemí, et al. «On-Line FTIR as a Novel Tool to Monitor Fenton Process Behavior». Chemical Engineering Journal, vol. 232, octubre de 2013, pp. 519-26. DOI.org (Crossref), https://doi.org/10.1016/j.cej.2013.07.119 1385-8947 10.1016/j.cej.2013.07.119 https://hdl.handle.net/20.500.14352/44491 http://www.doi.org/10.1016/j.cej.2013.07.119 The efficiency of advanced oxidation processes is usually optimized by measuring the evolution of some water quality parameters sampling aliquots at pre-selected time intervals, such as particular undesired contaminants contents, or the reduction of 5 chemical oxygen demand and total organic carbon. Besides providing good information regarding overall treatment performance and dynamics, this methodology also implies large analytical time consumption, and does not offer the actual full sequence of compounds appearing and disappearing during oxidation. On-line Fourier transform infrared spectroscopy is herein reported as a very useful tool for this purpose. In particular, it was successfully applied to monitoring the Fenton’s oxidation of three model compounds (phenol, acetic acid, and oxalic acid) performed in continuous,12 providing precise control of the effect of reagents over time. Hydroxylation reactions 13 resulted in the formation of hydroquinone and catechol as the main aromatic by14 products being generated along the oxidation of phenol by the Fenton process. All phenolic substances (phenol, hydroquinone, benzoquinone, and catechol) were totally removed along the reaction. Carboxylic acids (oxalic and acetic mainly) were significantly present as final by-products of the oxidation process, highlighting their oxirecalcitrant behavior. On-line FTIR successfully enabled monitoring the Fenton process, and it provided a precise control of the effect of reagents along reaction time. Applications for a future on-line control of Fenton processes in industry may be developed in order to optimize the use of reagents and the potential combination with biological treatment stages; therefore reducing the operational cost of this advanced oxidation treatment. eng On-line FTIR as a novel tool to monitor Fenton process behavior journal article URL https://docta.ucm.es/bitstreams/6bb4b59d-5a49-4fc7-a87d-99b6ff271ba2/download File MD5 94e6270a5b64c92619f45717b0596f55 388597 application/pdf Online_FTIR.pdf URL https://docta.ucm.es/bitstreams/dc2374db-0e74-4bd6-93e5-947f44167db0/download File MD5 9ed4d7d02359f88601bc68823be4e857 46105 text/plain Online FTIR as a novel tool to monitor Fenton process behavior_Merayo_2013.pdf.txt URL https://docta.ucm.es/bitstreams/13b2dd5b-1ace-4517-956c-8a4727ab6bc8/download File MD5 9ed4d7d02359f88601bc68823be4e857 46105 text/plain Online_FTIR.pdf.txt