Volumetric gas-liquid mass transfer coefficient in an external-loop airlift reactor with inserted membrane
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چکیده
منابع مشابه
Hydrodynamics and mass transfer inthree-phase airlift reactors for activated Carbon and sludge filtration
A bioreactor refers to any manufactured or engineered device that supports a biologically active environment. These kinds of reactors are designed to treat wastewater treatment. Volumetric mass transfer coefficient and the effect of superficial gas velocity, as the most important operational factor on hydrodynamics, in three-phase airlift reactors are investigated in this study. The experiments...
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متن کاملGas Hold-up Characteristics of an External Loop Airlift Contactor
Conventional airlift contactor (UT-ALC) was modified to improve its performance. The modified system (CDT-ALC) was tested for gas hold-up characteristics. Hydrodynamic environment depends on gas hold-up. New system reported 50 % higher gas hold-up. Linear relation between superficial gas velocity and fractional gas hold-up were developed from experimental data for both the reactors.
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In airlift reactors transport phenomena are achieved by pneumatic agitation and circulation occurs in a defined cyclic pattern through a loop. In the present work, the effect of geometrical relations on gas holdup and liquid velocity, and consequently on the gas-liquid mass transfer coefficient, was studied in a 6liter airlift bioreactor with AD/AR = 0.63; AD, downcomer cross-sectional area, an...
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ژورنال
عنوان ژورنال: Chemical Industry and Chemical Engineering Quarterly
سال: 2016
ISSN: 1451-9372,2217-7434
DOI: 10.2298/ciceq150622041k