Vinasse photoreforming for hydrogen production using Pt/TiO₂ as catalyst under UV irradiation

Autor(es)

Silvaino, Patricia Ferreira ; Ferreira, Joao Coutinho ; Carminati, Saulo Amaral ; Vaz, Jorge Moreira ; Spinace, Estevam Vitorio

• Tipo de documento: Artigo Científico
• Fonte: RSC ADVANCES; v. 15, n. 8, p. 6-pg., 2025-02-19.

Resumo

Vinasse, a dark-colored aqueous byproduct of bioethanol production, contains a variety of organic compounds and inorganic salt ions. In this study, the photoreforming of vinasse was investigated using Pt/TiO2 as a catalyst under UV irradiation. The gaseous products generated were analyzed, revealing the formation of hydrogen (H2) along with other gases, including CO2, CH4, CO, C2H6, C2H4, C3H8, and C4H10. When using filtered vinasse, H2 and other gaseous products were produced solely through photolysis, even in the presence of the Pt/TiO2 photocatalyst. Notably, photocatalytic H2 production was observed when inorganic salt ions were removed from the vinasse, and a lower concentration of vinasse was employed in the reaction medium. (AU)

• Processo FAPESP: 21/01896-4 - Desenvolvimento de fotocatalisadores de TiO2/WO3 dopados para a conversão de metano a produtos de alto valor agregado acoplado com a evolução de hidrogênio da água
• Beneficiário: Saulo do Amaral Carminati
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado