کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
636987 1456145 2009 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of Streptomyces coelicolor development on the hydrodynamics of a vertically orientated capillary membrane gradostat reactor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
The effect of Streptomyces coelicolor development on the hydrodynamics of a vertically orientated capillary membrane gradostat reactor
چکیده انگلیسی

An empirical correlation for the effect of a Streptomyces coelicolor biofilm on hydraulic permeability is presented. This relation was based on a two-phase logistic fit of the biofilm growth kinetics, taking into account uneven growth of the biofilm. The model was applied to a vertically orientated, pressure-controlled, membrane gradostat reactor (MGR) operated in the dead-end mode. The permeability correlation developed was further used in the investigation of the effect of bacterial growth on velocity and pressure profiles of the nutrient solution in the lumen of the MGR. The velocity profiles emanating from the application of the model were in correspondence with the observed flux decline in the pressure-controlled MGRs. The hydrostatic pressure profiles pointed to the existence of a critical hydraulic permeability of the biofilm, below which there is recirculation of the nutrient solution back to the membrane lumen. Even at hydraulic permeabilities much higher than the predicted κcrit, this recirculation was marked by the existence of the secondary metabolite, actinorhodin, in the lumen of the MGR.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Membrane Science - Volume 333, Issues 1–2, 1 May 2009, Pages 79–87
نویسندگان
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