The advanced oxidation of aqueous polyethylene oxide
(PEO) is studied
using the UV/H2O2 process in a batch recirculation
photoreactor. The response surface methodology (RSM), combined with
quadratic programming, is used for the experimental design, statistical
analysis, and optimization of the process. In the second part, a detailed
mathematical model is developed to predict the total organic carbon
(TOC) removal as a function of time. Continuous distribution kinetics
is applied to establish the kinetic model for the photodegradation
of PEO. The model is validated at different influential operating
conditions using experimental data obtained by a recirculating batch
photoreactor. An excellent agreement between the model predictions
and the experimental data is confirmed for all experimental conditions.
Also, the intrinsic rate constants are estimated using an optimization
algorithm. The model provides a good insight into the free-radical-induced
degradation mechanisms and kinetics that could be considered for the
process optimization.
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