title: Identification of Biokinetic Models Using the Concept of Extents.
abstract: The development of a wide array of process technologies to enable the shift from conventional biological wastewater treatment processes to resource recovery systems is matched by an increasing demand for predictive capabilities. Mathematical models are excellent tools to meet this demand. However, obtaining reliable and fit-for-purpose models remains a cumbersome task due to the inherent complexity of biological wastewater treatment processes. In this work, we present a first study in the context of environmental biotechnology that adopts and explores the use of extents as a way to simplify and streamline the dynamic process modeling task. In addition, the extent-based modeling strategy is enhanced by optimal accounting for nonlinear algebraic equilibria and nonlinear measurement equations. Finally, a thorough discussion of our results explains the benefits of extent-based modeling and its potential to turn environmental process modeling into a highly automated task.
authors.affiliation: Eawag: Swiss Federal Institute of Aquatic Science and Technology , Überlandstrasse 133, CH-8600 Dübendorf, Switzerland.
authors.forename: Alma
authors.initials: A
authors.lastname: Mašić
authors.affiliation: Laboratoire d'Automatique, École Polytechnique Fédérale de Lausanne , CH-1015 Lausanne, Switzerland.
authors.forename: Sriniketh
authors.initials: S
authors.lastname: Srinivasan
authors.affiliation: Laboratoire d'Automatique, École Polytechnique Fédérale de Lausanne , CH-1015 Lausanne, Switzerland.
authors.forename: Julien
authors.identifier: http://orcid.org/0000-0001-8155-0159
authors.initials: J
authors.lastname: Billeter
authors.affiliation: Laboratoire d'Automatique, École Polytechnique Fédérale de Lausanne , CH-1015 Lausanne, Switzerland.
authors.forename: Dominique
authors.initials: D
authors.lastname: Bonvin
authors.affiliation: Eawag: Swiss Federal Institute of Aquatic Science and Technology , Überlandstrasse 133, CH-8600 Dübendorf, Switzerland.
authors.forename: Kris
authors.identifier: http://orcid.org/0000-0002-8330-010X
authors.initials: K
authors.lastname: Villez
mesh_terms: D008954:Models, Biological; D008962:Models, Theoretical; D062065:Wastewater
chemical_list: D062065:Wastewater