Study of an Annular Photoreactor with Tangential Inlet and Outlet. II. The UV/H2O2 Reactive Flow.

Autor: Peres, José Carlos G., Tambani, Pamela C., Teixeira, Antonio Carlos S. C., Guardani, Roberto, Vianna, Ardson dos S.
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Zdroj: Chemical Engineering & Technology; Feb2019, Vol. 42 Issue 2, p316-326, 11p
Abstrakt: The concentration profiles of species involved in the degradation of phenol by an advanced oxidation process (AOP) are modeled by a computational fluid dynamics tool in an annular reactor whose fluid dynamics was the object of a previous study. The reactive flow was fully described together with the radiation field and the kinetic model, which encompasses large kinetic constants such as 1010 L mol−1s−1. Phenol degradation can be simulated by using relaxation factors of at least 1012 kg m−3s−1. The hydroxyl radical concentration profile depends on the radiation field, assessed by the discrete ordinate and the discrete transfer methods. Phenol can be completely degraded along the reactor. A centrifugal effect was observed, with higher concentrations of degradation products along the inner wall at the reactor outlet. The concentration profiles of the species involved in phenol degradation by the advanced oxidation process, UV/H2O2, are modeled using computational fluid dynamics. The reactive flow in the annular reactor is described with the radiation field and a kinetic model that encompasses large kinetic constants. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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