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    Ag<inf>3</inf>PO<inf>4</inf>/AgBr/Ag-HKUST-1-MOF composites as novel blue LED light active photocatalyst for enhanced degradation of ternary mixture of dyes in a rotating packed bed reactor

    Access Status
    Fulltext not available
    Authors
    Mosleh, S.
    Rahimi, M.
    Ghaedi, M.
    Dashtian, K.
    Hajati, S.
    Wang, Shaobin
    Date
    2017
    Collection
    • Curtin Research Publications
    Type
    Journal Article
    Metadata
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    Abstract

    © 2017 Elsevier B.V.This study focused on a continuous flow photocatalytic rotating packed bed for simultaneous photodegradation of methylene blue (MB), auramine-O (AO) and erythrosine (ER). Blue light emitting diode strips were used as light sources in this reactor for photocatalyst activation. Ag3PO4/AgBr/Ag decorated HKUST-1 MOF composite (HKUST-1-Ag3PO4/AgBr/Ag) as novel visible light photocatalyst was synthesized and characterized by XRD, FE-SEM, EDS and DRS analyses. Eight effective parameters include initial concentrations of MB, AO and ER, rotational speed, solution flow rate, aeration flow rate, HKUST-1-Ag3PO4/AgBr/Ag mass and time of illumination were optimized using a Taguchi design L18 (21 × 37). The pH was optimized by one at a time method and fixed at 5.0. The maximum photocatalytic degradation efficacies of 92.01%, 89.57% and 89.96% for MB, ER and AO, respectively, were found at the optimum conditions: 75 min of illumination time, 15 mg/L of each dye, 0.4 g/L of HKUST-1-Ag3PO4/AgBr/Ag, 1000 rpm of rotational speed, 0.3 L/min of solution flow rate and 25 L/min of aeration rate. Kinetic study indicated that the Langmuir-Hinshelwood (L-H) model was well fitted to the experimental data of ternary photocatalytic degradation.

    Citation
    Mosleh, S. and Rahimi, M. and Ghaedi, M. and Dashtian, K. and Hajati, S. and Wang, S. 2017. Ag<inf>3</inf>PO<inf>4</inf>/AgBr/Ag-HKUST-1-MOF composites as novel blue LED light active photocatalyst for enhanced degradation of ternary mixture of dyes in a rotating packed bed reactor. Chemical Engineering and Processing. 114: pp. 24-38.
    Source Title
    Chemical Engineering and Processing
    URI
    http://hdl.handle.net/20.500.11937/52304
    DOI
    10.1016/j.cep.2017.01.009
    Department
    Department of Chemical Engineering

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