Vine-pruning waste derived catalyst for ibuprofen degradation from water through ozonation

Autor(es)

Nieto-Sandoval, Julia ; Cavalcante, Rodrigo P. ; Bayarri, Bernardi ; Sans, Carmen

• Tipo de documento: Artigo Científico
• Fonte: Chemical Engineering Science; v. 311, p. 7-pg., 2025-06-01.

Resumo

This work aimed to valorize vine shoots, for water treatment applications by investigating hydrochar materials in catalytic ozonation. For this purpose, a vine-pruning waste derived catalyst was synthesized via hydrothermal treatment at 200 degrees C, previous a cobalt impregnation step. The catalytic ozonation of the pharmaceutical ibuprofen showed 47 % higher degradation rate than single ozonation. However, the catalytic efficiency was reduced increasing the catalyst dose due to dissolved organic matter released during reaction. To address this issue, several chemical post-treatments were tested without effectiveness. Nevertheless, in the presence of a posttreated pyrolyzed catalyst at 550 degrees C (0.25 g/L), 86 % ibuprofen removal within just 1 min was achieved using 5 mg/L of ozone. The increase in BET surface area and the adsorption of ibuprofen on the material observed suggest a synergistic effect of both processes. Additionally, the effectiveness of the system was confirmed in a real aqueous matrix. (AU)

• Processo FAPESP: 23/02506-0 - O papel dos íons metálicos na remoção de contaminantes recalcitrantes de preocupação emergente por ozonização catalítica
• Beneficiário: Rodrigo Pereira Cavalcante
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 19/26210-8 - Investigação da contribuição dos processos oxidativos avançados no tratamento multibarreira de efluentes biotratados
• Beneficiário: Rodrigo Pereira Cavalcante
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado