| Texto completo | |
| Autor(es): |
Reis, Roberta Y. N.
;
Rodriguez-Gomez, Alberto
;
Mascaro, Lucia H.
;
Rodrigo, Manuel A.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CHEMICAL ENGINEERING JOURNAL; v. 522, p. 22-pg., 2025-08-21. |
| Resumo | |
The increasing demand for efficient and sustainable solutions in wastewater treatment and clean energy generation has driven the advancement of photoelectrocatalysis (PhEC), emerging as a promising alternative technology. This study presents the design, development, and validation of a novel photoelectrochemical reactor (E3L-PECR), engineered through 3D printing to optimize faradaic and energy efficiencies in degrading recalcitrant organic pollutants. The reactor was coupled with a Ti-WO3 photoanode and evaluated under distinct LED irradiation conditions. Despite its lower energy consumption, high-brightness (HB) LEDs exhibited reduced photoelectrochemical performance. High-power (HP) LEDs provided superior photocurrent densities (1.65 mA cm- 2 at 0.7 V vs Ag/AgCl) and 4-nitrophenol (4-NP) removal efficiency (90 % in 120 min), along with enhanced coulombic efficiency. A heat dissipation system was necessary for the operation of HP LEDs. The optimized PhEC conditions resulted in effective 4-NP degradation, the generation of short-chain organic acids, and a 65 % reduction in phytotoxicity, as supported by radical scavenger analysis. The Ti-WO3 electrode demonstrated good stability across five reuse cycles. Overall, the E3L-PECR photoelectroreactor represents a significant advancement in PhEC reactor design, offering high efficiency, reduced environmental impact, and the potential for scalable applications in water treatment. (AU) | |
| Processo FAPESP: | 13/07296-2 - CDMF - Centro de Desenvolvimento de Materiais Funcionais |
| Beneficiário: | Elson Longo da Silva |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |
| Processo FAPESP: | 17/11986-5 - Geração e Armazenamento de Novas Energias: trazendo desenvolvimento tecnológico para o país |
| Beneficiário: | Ana Flávia Nogueira |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 23/03168-1 - Desenvolvimento e estudo de reator fotoeletrocatalítico aplicado para a degradação de compostos farmacêuticos |
| Beneficiário: | Roberta Yonara Nascimento Reis |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |
| Processo FAPESP: | 21/11326-0 - Estudo de fotoeletrodos de cobre e óxido de cobre para tratamentos de águas residuais após a pandemia do COVID-19 |
| Beneficiário: | Roberta Yonara Nascimento Reis |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |