title: Dynamic modelling and simulation of ¹⁵N separation by chemical exchange in NO, NO₂-HNO₃ system.
abstract: The dynamic behaviour of a ¹⁵N separation process by chemical exchange in a NO, NO₂-HNO₃ system has been analysed based on an accurate mathematical model. A nonlinear system of first-order partial differential equations was determined by considering the multiple exchange reactions between the components of the gaseous mixture and the liquid phase constituents. The mathematical model of the process describes the space-time variation of the ¹⁵N mole fraction in gas and liquid phases and provides a better understanding of operating limits and decision support in process design and optimisation.
authors.affiliation: Department of Automation, Technical University of Cluj-Napoca, Cluj-Napoca, Romania. paula.raica@aut.utcluj.ro
authors.forename: Paula
authors.initials: P
authors.lastname: Raica
authors.forename: Damian
authors.initials: D
authors.lastname: Axente
mesh_terms: D008962:Models, Theoretical; D017942:Nitric Acid / Q000737:chemistry*; D009569:Nitric Oxide / Q000737:chemistry*; D009585:Nitrogen Dioxide / Q000737:chemistry*; D009587:Nitrogen Isotopes / Q000302:isolation & purification*
chemical_list: D009587:Nitrogen Isotopes; D009569:Nitric Oxide; D017942:Nitric Acid; D009585:Nitrogen Dioxide