title: Multi-rate nonlinear state and parameter estimation in a bioreactor.
abstract: This paper concerns real-time, multi-rate, nonlinear state and parameter estimation in a pilot-scale biochemical reactor in which cultivation of mouse-mouse hybridoma cells takes place. A multi-rate estimator is designed and implemented to estimate specific growth rate and concentrations of viable cells, total cells, glucose, glutamine, and monoclonal antibodies (MAb) in the reactor. These are estimated from frequent measurement (inferred values) of oxygen uptake rate (OUR) and infrequent and delayed measurements of the concentrations of viable cells, total cells, glucose, glutamine, and MAb. The infrequent measurements are available every 2 to 17 h with a time delay of 0.08 to 2.00 h, and OUR is inferred from dissolved oxygen concentration measurements that are available very 0.17 h. For each of the process variables, its infrequent measurement data and the profile of its estimate are presented to show the performance of the multi-rate estimator.
authors: Department of Chemical Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA.
authors: S
authors: S
authors: Tatiraju
authors: M
authors: M
authors: Soroush
authors: R
authors: R
authors: Mutharasan
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000096:biosynthesis*; D019149:Bioreactors; D001709:Biotechnology / Q000295:instrumentation / Q000379:methods; D018929:Cell Culture Techniques / Q000295:instrumentation / Q000379:methods; D002455:Cell Division; D002470:Cell Survival; D004867:Equipment Design; D005947:Glucose / Q000378:metabolism; D005973:Glutamine / Q000378:metabolism; D006825:Hybridomas / Q000166:cytology*; D007700:Kinetics; D051379:Mice; D008962:Models, Theoretical; D010101:Oxygen Consumption; D013997:Time Factors
chemical_list: D000911:Antibodies, Monoclonal; D005973:Glutamine; D005947:Glucose