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Title

KINETIC STUDY OF N-HEXANE BIODEGRADATION BY AN ISOLATED FUNGAL CONSORTIUM FROM A BIOFILTER

Pages

 Start Page 71 | End Page 81

Abstract

 The KINETIC study of a pollutant BIODEGRADATION is considered as one of the main steps in characterization of a biofilter performance. In this research, an unidentified fungal consortium which had been previously isolated from a compost biofilter treating N-HEXANE and toluene vapors was used to remove N-HEXANE in a batch system. To specify the ability of the isolated fungi, the effect of operating TEMPERATURE and pollutant concentration on the removal process were studied. The hexane concentration in liquid phase varied in the range of 5-25 mg/L and TEMPERATURE altered between 25-45oC in a central composite design analysis. The optimum conditions for hexane BIODEGRADATION obtained at 36.5oC and 8.6 mg/L. The KINETIC investigations at 25 and 40oC presented that Haldane, Webb and Yano models could predict the BIODEGRADATION well with R2> 0.98. The KINETIC parameters of Haldane model at 40oC were Vmax=3.57 (mg/gBiomass.h), Ks=9.57 mg/L, and K1=20.48 mg/L.

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