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۱Kinetic Study of n–Hexane Biodegradation by an Isolated Fungal Consortium from a Biofilter
اطلاعات انتشار: هفتمین کنگره ملی مهندسی شیمی، سال
تعداد صفحات: ۸
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 previously had been 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 temperature and hexane concentration were studied. The hexane concentrationin liquid phase varied in the range of 5–25 mg\l and operating temperature altered between 25– 45°C in a central composite design (CCD) analysis. The optimum conditions for hexane biodegradation obtained at 36.5°C and 8.6 mg\L. The kinetic investigations at 25 and 40°Cpresented that a Haldane, Webb and Yano models could predict the biodegradation well with R2 value of more than 0.98. In addition, the affinity of fungal consortium to degrade hexane at 40°C was higher than degradation at 25°C. The kinetic parameters of Haldane model at 40°C were νmax= 3.57 (mg\gBiomass.h); KS=9.57(mg\L); KI=20.48(mg\L).<\div>
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