Title of article :
Kinetic study of the regeneration of spent caustic via the genetic algorithm method
Author/Authors :
Karimi, Asadollah Department of Chemical Engineering - Faculty of Engineering - University of Maragheh , Fatehifar, Esmaeil Environmental Engineering Research Center - Faculty of Chemical Engineering - Sahand University of Technology, Tabriz , Alizadeh, Reza Environmental Engineering Research Center - Faculty of Chemical Engineering - Sahand University of Technology, Tabriz , Soltani, Hadi Department of Chemical Engineering - Ahar Branch - Islamic Azad University, Ahar
Abstract :
Background: Spent caustic contains noxious components such as sulfide species and also high chemical
oxygen demand content (COD). Oxidation of these materials to caustic and sulfate species is mostly the
rate-controlling step within catalytic oxidation of spent caustic.
Methods: In this study, the kinetics of catalytic oxidation of spent caustic and the regeneration methodology
of the sulfidic spent caustic were investigated. The kinetics of catalytic oxidation of spent caustic was studied
in the presence of a heterogeneous catalyst. The developed mathematical model was verified via the batch
bubble column reactor. The elementary and non-elementary models based on the genetic algorithm were
used to obtain the rate coefficient and kinetic order.
Results: The experiments were carried out at various conditions. The results indicated that the error of
objective function of the non-elementary and elementary models was 3.01% and 134.96%, respectively.
Conclusion: According to the results, the non-elementary model had rational outcome compared to the
elementary one. Also, non-elemental model is more concordance with experimental results.
Keywords :
Caustic , Kinetic , Regeneration , Catalysis
Journal title :
Astroparticle Physics
