Biodegradation of fluorene by neoteric LDPE immobilized Pseudomonas pseudoalcaligenes NRSS3 in a packed bed bioreactor and analysis of external mass transfer correlation

2019 ◽  
Vol 77 ◽  
pp. 106-112 ◽  
Author(s):  
R.K. Sonwani ◽  
B.S. Giri ◽  
T. Das ◽  
R.S. Singh ◽  
B.N. Rai
Keyword(s):  
Mass Transfer ◽  
Packed Bed ◽  
External Mass Transfer ◽  
Packed Bed Bioreactor ◽  
Pseudomonas Pseudoalcaligenes ◽  
Mass Transfer Correlation

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 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.

Influence of the liquid-phase mass transfer on the performance of a packed-bed bioreactor for wastewater treatment

2001 ◽  
Vol 78 (3) ◽  
pp. 231-238 ◽  
Author(s):  
Arnaldo Sarti ◽  
Lorena Grein Tavares Vieira ◽  
Eugenio Foresti ◽  
Marcelo Zaiat
Keyword(s):  
Mass Transfer ◽  
Wastewater Treatment ◽  
Liquid Phase ◽  
Packed Bed ◽  
Packed Bed Bioreactor ◽  
Liquid Phase Mass Transfer
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