Oxidarea şi mineralizarea catecolului din soluţii apoase utilizând procese omogene [Articol]
| dc.contributor.author | Mocanu, Larisa | ro |
| dc.contributor.author | Gonța, Maria | ro |
| dc.date.accessioned | 2026-01-30T06:01:39Z | |
| dc.date.issued | 2025 | |
| dc.description.abstract | Catechol 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.provenance | Submitted 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.provenance | Made 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: 2025 | en |
| dc.description.sponsorship | Lucrarea 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.citation | MOCANU, 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.94 | ro |
| dc.identifier.isbn | 978-9975-62-989-8 (PDF) | |
| dc.identifier.uri | https://doi.org/10.59295/spd2025e.94 | |
| dc.identifier.uri | https://msuir.usm.md/handle/123456789/19969 | |
| dc.language.iso | ro | ro |
| dc.publisher | CEP USM | |
| dc.subject | catecol | ro |
| dc.subject | cinetică | ro |
| dc.subject | mineralizare | ro |
| dc.subject | procese Fenton și Foto-Fenton | ro |
| dc.title | Oxidarea şi mineralizarea catecolului din soluţii apoase utilizând procese omogene [Articol] | ro |
| dc.title.alternative | OXIDATION AND MINERALIZATION OF CATECHOL FROM AQUEOUS SOLUTIONS USING HOMOGENEOUS PROCESSES | en |
| dc.type | Article |