A study of external mass transfer effect on biodegradation of phenol using low‐density polyethylene immobilized Bacillus flexus GS1 IIT (BHU) in a packed bed bioreactor

2020 ◽  
Author(s):  
Ganesh Swain ◽  
Ravi Kumar Sonwani ◽  
Balendu Shekhar Giri ◽  
Ram Sharan Singh ◽  
Ravi Prakash Jaiswal ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
Transfer Effect ◽  
Low Density Polyethylene ◽  
Low Density ◽  
External Mass Transfer ◽  
Packed Bed Bioreactor ◽  
Mass Transfer Effect ◽  
Bacillus Flexus

Performance evaluation of a continuous packed bed bioreactor: Bio-kinetics and external mass transfer study

2020 ◽  
Vol 201 ◽  
pp. 110860 ◽  
Author(s):  
Ravi Kumar Sonwani ◽  
Balendu Shekhar Giri ◽  
Ravi Prakash Jaiswal ◽  
Ram Sharan Singh ◽  
Birendra Nath Rai
Keyword(s):  
Mass Transfer ◽  
Performance Evaluation ◽  
Packed Bed ◽  
External Mass Transfer ◽  
Packed Bed Bioreactor ◽  
Transfer Study

scholarly journals Gas-solid and gas-liquid mass transfer: Effect of turbulent Schmidt number

2007 ◽  
Vol 13 (3) ◽  
pp. 167-168 ◽  
Author(s):  
Aleksandar Dudukovic ◽  
Rada Pjanovic
Keyword(s):  
Mass Transfer ◽  
Eddy Viscosity ◽  
Schmidt Number ◽  
Mass Transfer Rate ◽  
Transfer Effect ◽  
Transfer Coefficients ◽  
Mass Transfer Effect ◽  
Liquid Mass ◽  
Turbulent Schmidt Number ◽  
Liquid Mass Transfer

The scope of this paper is to explain effect of eddy viscosity and turbulent Schmidt number on mass transfer rate. New, theoretically based correlation for gas-liquid mass transfer coefficients are proposed.

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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