Combined effects of external mass transfer and biodegradation rates on removal of phenol by immobilized Ralstonia eutropha in a packed bed reactor

2008 ◽  
Vol 151 (1) ◽  
pp. 9-16 ◽  
Author(s):  
Ozlem Tepe ◽  
Arzu Y. Dursun
Keyword(s):  
Mass Transfer ◽  
Ralstonia Eutropha ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Combined Effects ◽  
External Mass Transfer

Biodegradation of Methyl Orange by alginate-immobilized Aeromonas sp. in a packed bed reactor: external mass transfer modeling

2014 ◽  
Vol 37 (11) ◽  
pp. 2149-2162 ◽  
Author(s):  
Mathur Nadarajan Kathiravan ◽  
Siluvai Antony Praveen ◽  
Geun Ho Gim ◽  
Gui Hawn Han ◽  
Si Wouk Kim
Keyword(s):  
Mass Transfer ◽  
Methyl Orange ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
External Mass Transfer ◽  
Mass Transfer Modeling

scholarly journals EXTERNAL MASS TRANSFER MODEL FOR DEGRADATION OF SIMULATED TEXTILE EFFLUENT IN PACKED BED REACTOR

2019 ◽  
Vol 14 (01) ◽  
pp. 254-260
Author(s):  
S. Rengadurai ◽  
B. Preetha ◽  
A. Ashok Kumar ◽  
K. Manikandan ◽  
P. Elavarasan
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Textile Effluent ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
External Mass Transfer ◽  
External Mass Transfer Model

scholarly journals External Mass Transfer Model for Hydrogen Peroxide Decomposition by Terminox Ultra Catalase in a Packed-Bed Reactor

2017 ◽  
Vol 38 (2) ◽  
pp. 307-319 ◽  
Author(s):  
Ireneusz Grubecki
Keyword(s):  
Mass Transfer ◽  
Reaction Rate ◽  
Packed Bed ◽  
Transfer Model ◽  
Mass Transfer Model ◽  
External Mass Transfer ◽  
Hydrogen Peroxide Decomposition ◽  
Reaction Rate Constants ◽  
Peroxide Decomposition ◽  
External Mass Transfer Model

Abstract It is known that external diffusional resistances are significant in immobilized enzyme packed-bed reactors, especially at large scales. Thus, the external mass transfer effects were analyzed for hydrogen peroxide decomposition by immobilized Terminox Ultra catalase in a packed-bed bioreactor. For this purpose the apparent reaction rate constants, kP, were determined by conducting experimental works at different superficial velocities, U, and temperatures. To develop an external mass transfer model the correlation between the Colburn factor, JD, and the Reynolds number, Re, of the type JD = K Re(n-1) was assessed and related to the mass transfer coefficient, kmL. The values of K and n were calculated from the dependence (am kp-1 - kR-1) vs. Re-1 making use of the intrinsic reaction rate constants, kR, determined before. Based on statistical analysis it was found that the mass transfer correlation JD = 0.972 Re-0.368 predicts experimental data accurately. The proposed model would be useful for the design and optimization of industrial-scale reactors.

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