Buscar

Estamos realizando la búsqueda. Por favor, espere...

Peracetic acid-enhanced photocatalytic and sonophotocatalytic inactivation of E. coli in aqueous suspensions

Abstract: BACKGROUND: Although chlorination is an effective and widely employed method of water disinfection, it suffers serious drawbacks such as the formation of toxic chlorinated by-products. Therefore, other disinfection technologies have been researched and developed, including advanced oxidation. RESULTS: The efficacy of heterogeneous photocatalysis and sonophotocatalysis induced by UV-A irradiation and low frequency (24-80 kHz) ultrasound irradiation in the presence of TiO2 as the photocatalyst and peracetic acid (PAA) as an additional disinfectant to inactivate E. coli in sterile water was evaluated. PAA-assisted UV-A/TiO2 photocatalysis generally leads to nearly complete E. coli inactivation in 10-20 min of contact time with the extent of inactivation depending on the photocatalyst type and loading (in the range 100-500 mg L-1) and PAA concentration (in the range 0.5-2 mg L-1). The simultaneous application of ultrasound and UV-A irradiation in the presence of TiO2 and PAA prompted further E. coli inactivation. CONCLUSIONS: The proposed advanced disinfection technology offers complete E. coli inactivation at short treatment times and low PAA doses.

 Autoría: Drosou C., Coz A., Xekoukoulotakis N., Moya A., Vergara Y., Mantzavinos D.,

 Fuente: Journal of Chemical Technology and Biotechnology, 2010, 85(8), 1049-1053

 Editorial: Wiley-Blackwell

 Fecha de publicación: 01/08/2010

 Nº de páginas: 5

 Tipo de publicación: Artículo de Revista

 DOI: 10.1002/jctb.2396

 ISSN: 0268-2575,1097-4660

 Url de la publicación: https://doi.org/10.1002/jctb.2396

Autoría

DROSOU, CATHERINE

NIKOLAOS XEKOUKOULOTAKIS

MOYA, ARMANDO

VERGARA LARRAYAD, YOLANDA

DIONISSIOS MANTZAVINOS