Mass transfer effects on biodegradation of methylene blue by immobilized cell in a packed bed bioreactor

2018 ◽  
Vol 14 (1) ◽  
pp. e2269
Author(s):  
Alireza Habibi ◽  
Khatere Narimani Rad
Keyword(s):  
Mass Transfer ◽  
Methylene Blue ◽  
Packed Bed ◽  
Immobilized Cell ◽  
Transfer Effects ◽  
Packed Bed Bioreactor

scholarly journals Pre-purification of Plantago lanceolata extracts with biologically active compounds using yeast cells

2018 ◽  
Vol 11 (2) ◽  
pp. 163-169
Author(s):  
Vladimír Štefuca ◽  
Lukáš Rada ◽  
Alžbeta Chochulová ◽  
Michal Rosenberg
Keyword(s):  
Mass Transfer ◽  
Plantago Lanceolata ◽  
Packed Bed ◽  
Point Of View ◽  
Production Costs ◽  
Biologically Active ◽  
Effectiveness Factor ◽  
Packed Bed Reactor ◽  
Yeast Cells ◽  
Immobilized Cell

AbstractLeaves of the plantPlantago lanceolatacontain many economically interesting bioactive compounds, among them aucubin and catalpol are the most attractive. However, soluble saccharides passing to water extracts during isolation complicate chromatographic purification of these compounds. Their degradation by microbial cells transforming, for example, glucose, fructose, or sucrose to ethanol could bring important production costs savings and improved final product quality. It has been shown that the best saccharide degradation in extracts is achieved with theSaccharomyces cerevisiaecells. The cells were very active also in their immobilized form and they were able to completely remove glucose from the extract within four hours in a packed bed reactor combined with a stirring system with infinite medium recirculation.A simple mathematical model involving reaction kinetics and mass transfer limitations in the cell particles was proposed for the evaluation of cell effectiveness in their immobilized form in term of effectiveness factor. Values of the effectiveness factor calculated from the model were far below 1, indicating strong mass transfer limitations of the reaction. The model is suitable for optimization of preparation of immobilized cell particles, mainly from the point of view of cell charge in particles.

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

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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