Oxidarea şi mineralizarea catecolului din soluţii apoase utilizând procese omogene [Articol]

dc.contributor.authorMocanu, Larisaro
dc.contributor.authorGonța, Mariaro
dc.date.accessioned2026-01-30T06:01:39Z
dc.date.issued2025
dc.description.abstractCatechol is widely used in industrial applications such as photographic de-velopers, lubricants, polymerization inhibitors, and pharmaceuticals. Due to its toxicity and persistence, its removal from wastewater is essential. This study investigated the degradation and mineralization of catechol using homogeneous advanced oxidation processes—specifical-ly, Fenton and Photo-Fenton. Key operational parameters, including pH, reagent concentra-tions, UV type, and molar ratios, were systematically optimized. Optimal performance was observed at pH 2.6-3.2, with 0.1 mM H2O2 and Fe2+, and a molar ratio of H2O2 : Fe2+ : catechol of 10 : 1 : 2. UV-C radiation significantly enhanced the Photo-Fenton process by promoting Fe²⁺ regeneration. Kinetic analysis showed pseudo-first-order behavior, with the highest rate constant (0.00347 min-1) and a degradation rate of 9.23·10-8 mol/L·s. The proposed degradati-on mechanism involves hydroxyl radical attack, ring cleavage, and mineralization to CO2 and H2O. Among the systems tested, the UV-C assisted Photo-Fenton process achieved the highest catechol removal and COD reduction. These results highlight the potential of homogeneous AOPs for efficient treatment of phenolic pollutants in industrial wastewater.en
dc.description.provenanceSubmitted by Ludmila Vedrascu (ludmila_vedrascu@yahoo.com) on 2026-01-30T06:01:39Z No. of bitstreams: 1 94_MOCANU Larisa.pdf: 577065 bytes, checksum: 884fba219bb60e2b5934baefa528573d (MD5)en
dc.description.provenanceMade available in DSpace on 2026-01-30T06:01:39Z (GMT). No. of bitstreams: 1 94_MOCANU Larisa.pdf: 577065 bytes, checksum: 884fba219bb60e2b5934baefa528573d (MD5) Previous issue date: 2025en
dc.description.sponsorshipLucrarea a fost elaborată în cadrul proiectului Identificarea Procedeelor Tehnologice de Tratare, Formare a Calității și Cantității Apelor și Cercetări Avansate în Chimia Computațională și Ecologică cu cifrul 010603.ro
dc.identifier.citationMOCANU, Larisa şi Maria GONȚA. Oxidarea şi mineralizarea catecolului din soluţii apoase utilizând procese omogene. In: Integrare prin cercetare şi inovare: conferinţa ştiinţifică naţională cu participare internaţională. Ştiinţe Exacte și ale naturii. Chișinău, 6-7 noiembrie 2025. Chișinău: CEP USM, 2025, pp. 722-729. ISBN 978-9975-62-989-8 (PDF). Disponibil: https://doi.org/10.59295/spd2025e.94ro
dc.identifier.isbn978-9975-62-989-8 (PDF)
dc.identifier.urihttps://doi.org/10.59295/spd2025e.94
dc.identifier.urihttps://msuir.usm.md/handle/123456789/19969
dc.language.isororo
dc.publisherCEP USM
dc.subjectcatecolro
dc.subjectcineticăro
dc.subjectmineralizarero
dc.subjectprocese Fenton și Foto-Fentonro
dc.titleOxidarea şi mineralizarea catecolului din soluţii apoase utilizând procese omogene [Articol]ro
dc.title.alternativeOXIDATION AND MINERALIZATION OF CATECHOL FROM AQUEOUS SOLUTIONS USING HOMOGENEOUS PROCESSESen
dc.typeArticle

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