Continuous, real-time monitoring of the oxygen uptake rate (OUR) in animal cell bioreactors

1994 ◽  
Vol 44 (8) ◽  
pp. 983-990 ◽  
Author(s):  
Sung-jin Yoon ◽  
Konstantin B. Konstantinov
Keyword(s):  
Oxygen Uptake ◽  
Real Time ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Animal Cell ◽  
Real Time Monitoring ◽  
Animal Cell Bioreactors

A new method for on-line measurement of the volumetric oxygen uptake rate in membrane aerated animal cell cultures

2000 ◽  
Vol 78 (2) ◽  
pp. 139-147 ◽  
Author(s):  
Paul Ducommun ◽  
Pierre-Alain Ruffieux ◽  
Maria-Pilar Furter ◽  
Ian Marison ◽  
Urs von Stockar
Keyword(s):  
Oxygen Uptake ◽  
Cell Cultures ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Animal Cell ◽  
New Method ◽  
Line Measurement ◽  
Animal Cell Cultures ◽  
On Line

Real-time biomonitoring of oxygen uptake rate and biochemical oxygen demand using a novel optical biogas respirometric system

2021 ◽  
Vol 277 ◽  
pp. 111467
Author(s):  
Fida Hussain ◽  
Hye-Weon Yu ◽  
Kangmin Chon ◽  
Yong-Gu Lee ◽  
Heonseop Eom ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Real Time ◽  
Biochemical Oxygen Demand ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Oxygen Demand

Dissolved Oxygen Control Based on Real Time Oxygen Uptake Rate Estimation

2010 ◽  
Vol 2010 (8) ◽  
pp. 7400-7408 ◽  
Author(s):  
Gregory Duffy ◽  
Steven Kestel ◽  
Matthew Gray ◽  
George Lee ◽  
Tilo Stahl ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Dissolved Oxygen ◽  
Real Time ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Oxygen Control ◽  
Rate Estimation ◽  
Dissolved Oxygen Control

Exposure to degraded coral habitat depresses oxygen uptake rate during exercise of a juvenile reef fish

Coral Reefs ◽  
2021 ◽  
Author(s):  
Adam T. Downie ◽  
Caroline M. Phelps ◽  
Rhondda Jones ◽  
Jodie L. Rummer ◽  
Douglas P. Chivers ◽  
...  
Keyword(s):  
Oxygen Uptake ◽  
Reef Fish ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Juvenile Reef Fish

Mass transfer impacts in flocculent and granular biomass from SBR systems

2004 ◽  
Vol 50 (10) ◽  
pp. 203-212 ◽  
Author(s):  
D. Gapes ◽  
B.-M. Wilén ◽  
J. Keller
Keyword(s):  
Mass Transfer ◽  
Particle Size ◽  
Oxygen Uptake ◽  
Activated Sludge ◽  
Uptake Rate ◽  
Oxygen Uptake Rate ◽  
Batch Reactor ◽  
Average Particle Size ◽  
Gas Analysis ◽  
Average Particle

An experimental study was conducted to describe mass transfer impacts within nitrifying aggregates sourced from sequencing batch reactor (SBR) activated sludge systems. Flocculent and granular sludge with high nitrification activity was obtained in two laboratory SBR systems, supplied with a synthetic, ammonium-based feed. The flocculent biomass was fractionated using a sieving procedure, in order to obtain biomass fractions with different particle size distributions. The oxygen uptake rate (OUR) response to changes in dissolved oxygen concentration was measured under highly controlled conditions in a titrimetric and off-gas analysis (TOGA) sensor, and the results used to assess mass transfer effects. As the average particle size of the biomass increased, mass transfer limitations were found to increase significantly. Empirically fitted, apparent KS,O2 values were demonstrated to be highly dependent on particle size, and reflect the mass transfer limitations occurring in the aggregates within a given system. Such parameters thus have little to do with the actual biokinetic parameter from which they are derived. The results obtained from the TOGA sensor study were consistent with those obtained from a microelectrode study on the same nitrifying granules. Together, these studies add considerable weight to the conclusion that consideration of external and internal mass transfer limitations is vital to the accurate description of activated sludge treatment processes, particularly those with a high oxygen uptake rate.

Disturbance observer for estimation of oxygen uptake rate in an activated sludge reactor

2016 ◽  
Author(s):  
Francisco Jadilson dos Santos Silva ◽  
Euler C. T. de Macedo ◽  
Sebastian Y. C. Catunda ◽  
Carlos E. T. Dorea ◽  
Adrianus C. Van Haandel
Keyword(s):  
Oxygen Uptake ◽  
Activated Sludge ◽  
Uptake Rate ◽  
Disturbance Observer ◽  
Oxygen Uptake Rate ◽  
Activated Sludge Reactor
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