Open AccessOptimization of opeation parameters for methylene blue degradation by UV/TiO2/H2O2 process in an annular reactor
Author(s) -
Pham Duc Chinh,
Phạm Mạnh Cường,
Le Phuong Thanh,
Nguyen Thi Thu Trang,
Nguyễn Minh Tân
Publication year - 2021
Publication title -
vietnam journal of catalysis and adsorption
Language(s) - English
Resource type - Journals
ISSN - 0866-7411
DOI - 10.51316/jca.2021.007
Subject(s) - methylene blue , degradation (telecommunications) , reaction rate constant , process (computing) , irradiation , response surface methodology , chemistry , constant (computer programming) , reaction rate , optical density , methylene , analytical chemistry (journal) , nuclear chemistry , materials science , kinetics , chromatography , catalysis , organic chemistry , photocatalysis , optics , computer science , physics , nuclear physics , telecommunications , quantum mechanics , operating system , programming language
In this study, the degradation of methylene blue (MB) by UV/TiO2/ H2O2 process was ivestigated in an annular reactor. The effects of the factors: TiO2 concentration, H2O2 dosage, UV density, and hydrodynamic conditions on the reaction rate constant were evaluated by the response surface methodology. The results showed that TiO2concentration, H2O2dosage and UV density had a great influence on the kapp, hydrodynamics had a lower influence. Design Expert V.11 software is used to optimize the reaction conditions, the optimal apparent reaction rate constant is 0.168 min-1 under the following conditions: TiO2 concentration of 0.2 g/l, H2O2 dosage is 0.063 mol/l, UV density of 287 W/m2 and Re number is 10000.
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