Preprint Article Version 1 This version is not peer-reviewed

Rotating Photodisc Reactor (RPR) Used in The Photodegradation of Pyridine Using Zinc Oxide as a Catalyst Doped with Aluminum Nanoparticles Irradiated with Natural Light

Carlos Montalvo Romero
* ,
Claudia Alejandra Aguilar-Ucán
ORCID logo ,
Edith Lemus
,
Rosa María Cerón-Bretón
,
Julia Griselda Ceron-Breton
,
Juan Carlos Robles Heredia
,
Alejandro Ruiz Marin
Version 1 : Received: 7 October 2024 / Approved: 8 October 2024 / Online: 9 October 2024 (03:16:01 CEST)

How to cite: Montalvo Romero, C.; Aguilar-Ucán, C. A.; Lemus, E.; Cerón-Bretón, R. M.; Ceron-Breton, J. G.; Robles Heredia, J. C.; Ruiz Marin, A. Rotating Photodisc Reactor (RPR) Used in The Photodegradation of Pyridine Using Zinc Oxide as a Catalyst Doped with Aluminum Nanoparticles Irradiated with Natural Light. Preprints 2024, 2024100598. https://doi.org/10.20944/preprints202410.0598.v1 Montalvo Romero, C.; Aguilar-Ucán, C. A.; Lemus, E.; Cerón-Bretón, R. M.; Ceron-Breton, J. G.; Robles Heredia, J. C.; Ruiz Marin, A. Rotating Photodisc Reactor (RPR) Used in The Photodegradation of Pyridine Using Zinc Oxide as a Catalyst Doped with Aluminum Nanoparticles Irradiated with Natural Light. Preprints 2024, 2024100598. https://doi.org/10.20944/preprints202410.0598.v1

Abstract

Pyridine was degraded in a rotating photodisc reactor (RPR) using zinc oxide (ZnO) doped with aluminum nanoparticles (ZnO-Al) as a catalyst and natural light lamps. The reactor disks, made of clay, have a surface area of 329.7209 m². The reactor was operated as a semi-batch system, handling a volume of 14.8 L and a hydraulic residence time (HRT) of 72 hours at 54 rpm with a constant flow rate. The results indicated an average degradation of 50.6% after an HRT of 72 hours, with a maximum degradation of 62%. Characterization results confirmed the effectiveness of the doping process, showing an aluminum concentration of 4.11% by mass in the catalyst, as determined by X-ray techniques. Overall, the doping process proved effective for the zinc oxide catalyst, as evidenced by a reduction in the catalyst bandgap from 3.37 eV for undoped ZnO to 3.08 eV for the doped version, making it sufficiently active under natural light.

Keywords

Pyridine; rotating photodisc reactor (RPR); zinc oxide; aluminum

Subject

Environmental and Earth Sciences, Water Science and Technology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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