Biodesulfurization of gas oil using inorganic supports biomodified with metabolically active cells immobilized by adsorption

M. Alejandro Dinamarca, C. Ibacache-Quiroga, P. Baeza, S. Galvez, M. Villarroel, P. Olivero, J. Ojeda

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

52 Citas (Scopus)

Resumen

The immobilization of Pseudomonas stutzeri using adsorption on different inorganic supports was studied in relation to the number of adsorbed cells, metabolic activity and biodesulfurization (BDS). The electrophoretic migration (EM) measurements and Tetrazolioum (TTC) method were used to evaluate adsorption and metabolic activity. Results indicate that maximal immobilization was obtained with an initial load of 14 × 108 cells mL-1 for Al and Sep, whereas Ti requires 20 × 108 cells Ml-1. The highest interaction was observed in the P. stutzeri/Si and P. stutzeri/Sep biocatalysts. The IEP values and metabolic activities indicate that P. stutzeri change the surface of supports and maintains metabolic activity. A direct relation between BDS activity and the adsorption capacity of the bacterial cells was observed at the adsorption/desorption equilibrium level. The biomodification of inorganic supports by the adsorption process increases the bioavailability of sulphur substrates for bacterial cells, improving BDS activity.

Idioma originalInglés
Páginas (desde-hasta)2375-2378
Número de páginas4
PublicaciónBioresource Technology
Volumen101
N.º7
DOI
EstadoPublicada - abr. 2010
Publicado de forma externa

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