Modelling the adsorption kinetics of erythromycin onto neutral and anionic resins.
Bioprocess Biosyst Eng
; 26(1): 49-55, 2003 Nov.
Article
em En
| MEDLINE
| ID: mdl-14505163
ABSTRACT
In this study the selective adsorption method was chosen to enable the recovery of erythromycin. The following sorbents were tested neutral resins (XAD-4, XAD-7 and XAD-16) and an anionic resin (IRA-410). A mathematical kinetic model for the adsorption of erythromycin against time, on XAD-4, XAD-7 and XAD-16 resins, is proposed. Both Freundlich and Langmuir models showed a good fit for the sorbents XAD-7 and IRA-410 resins. The highest adsorption efficiency was observed when synthetic neutral resin, XAD-7 and XAD-16, were used. The estimated affinity and concentration factors show that the neutral resins tested are adequate for the selective adsorption of erythromycin. The estimated values of enthalpy and free energy of adsorption, lower than 12 kJ mol(-1) and -2 kJ mol(-1), respectively, indicate that a physiosorption process occurred.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ultrafiltração
/
Eritromicina
/
Resinas de Troca Aniônica
/
Modelos Químicos
Tipo de estudo:
Evaluation_studies
/
Prognostic_studies
Idioma:
En
Revista:
Bioprocess Biosyst Eng
Assunto da revista:
BIOTECNOLOGIA
/
ENGENHARIA BIOMEDICA
Ano de publicação:
2003
Tipo de documento:
Article
País de afiliação:
Portugal