SciELO - Scientific Electronic Library Online

 
vol.36 número5The defouling of membranes using polymer beads containing magnetic micro particlesFunctionalised natural zeolite and its potential for treating drinking water containing excess amount of nitrate índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Articulo

Indicadores

Links relacionados

  • En proceso de indezaciónCitado por Google
  • En proceso de indezaciónSimilares en Google

Compartir


Water SA

versión On-line ISSN 1816-7950
versión impresa ISSN 0378-4738

Resumen

GUO, W; WANG, H; SHI, Y  y  ZHANG, G. Sonochemical degradation of the antibiotic cephalexin in aqueous solution. Water SA [online]. 2010, vol.36, n.5, pp.651-654. ISSN 1816-7950.

The degradation of cephalexin in aqueous solution under ultrasound irradiation was investigated. Biodegradability of the solution was evaluated by the BOD5/COD ratio, which was raised from zero to 0.36 after ultrasound treatment, indicating that the ultrasound irradiation process is a successful pre-treatment step to improve the biodegradability of cephalexin solution. The influences of ultrasound power and pH value on the degradation of cephalexin were studied. It was found that the optimal ultrasound power for cephalexin degradation in the system was 200 W and the rate of cephalexin degradation was maximal in the pH range of 6.5 to 8.5. The degradation kinetics of cephalexin in aqueous solution under various operational conditions was also investigated. It was found that the degradation of cephalexin follows a pseudo-first order kinetics.

Palabras clave : antibiotic; biodegradability; cephalexin; degradation; ultrasound.

        · texto en Inglés     · Inglés ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons