Photoactivation and photoregeneration of TiO2/PAC mixture applied in suspension in water treatments: approach to a real application

Moles, S. (Universidad de Zaragoza) ; Berges, J. ; Ormad, M.P. (Universidad de Zaragoza) ; Nieto-Monge, M.J. (Universidad de Zaragoza) ; Gómez, J. ; Mosteo, R. (Universidad de Zaragoza)

Resumen: The process TiO2/PAC/UV-vis has been under study and compared with the isolated treatments of adsorption and photocatalysis determining possible synergies between adsorption and photocatalysis of target antibiotics: amoxicillin, enrofloxacin, sulfadiazine, and trimethoprim. The characterization of the TiO2/PAC mixture was carried out via FESEM and FTIR. Moreover, a kinetic study has been performed. The effect of UV-vis radiation and the type of matrix was analyzed in TiO2/PAC/UV-vis process. The performance of this treatment has been monitored during three cycles, evaluating also the regeneration of TiO2/PAC mixture by UV-vis light. TiO2/PAC/UV-vis process allowed the removal of the antibiotics in the range 90–100% (an average removal of 93% of the initial concentration) after 60 min of treatment. However, only amoxicillin showed a significant synergy applying TiO2/PAC/UV-vis process. Regarding matrix effect, no influence of the matrix type (ultrapure water or treated wastewater) was observed. Since PAC tends to be deactivated gradually, the TiO2/PAC/UV-vis process performance decreases after each cycle in a 15% average. Finally, regeneration via UV-vis light started to be effective after a total of 4 h of regeneration.

Idioma: Inglés

DOI: 10.1007/s11356-021-12542-4

Año: 2021

Publicado en: Environmental Science and Pollution Research (2021), [13 pp]
ISSN: 0944-1344

Factor impacto JCR: 5.19 (2021)

Categ. JCR: ENVIRONMENTAL SCIENCES rank: 87 / 279 = 0.312 (2021) - Q2 - T1

Factor impacto CITESCORE: 6.6 - Medicine (Q1) - Environmental Science (Q1)

Factor impacto SCIMAGO: 0.831 - Environmental Chemistry (Q1) - Pollution (Q1) - Health, Toxicology and Mutagenesis (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/B43-20R
Financiación: info:eu-repo/grantAgreement/EUR/INTERREG-POCTEFA/OUTBIOTICS-EFA183/16

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Tecnologi. Medio Ambiente (Dpto. Ing.Quím.Tecnol.Med.Amb.)