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    Improved adsorption performance of nanostructured composite by ultrasonic wave: Optimization through response surface methodology, isotherm and kinetic studies

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    Authors
    Dastkhoon, M.
    Ghaedi, M.
    Asfaram, A.
    Goudarzi, A.
    Mohammadi, S.
    Wang, Shaobin
    Date
    2017
    Type
    Journal Article
    
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    Citation
    Dastkhoon, M. and Ghaedi, M. and Asfaram, A. and Goudarzi, A. and Mohammadi, S. and Wang, S. 2017. Improved adsorption performance of nanostructured composite by ultrasonic wave: Optimization through response surface methodology, isotherm and kinetic studies. Ultrasonics Sonochemistry. 37: pp. 94-105.
    Source Title
    Ultrasonics Sonochemistry
    DOI
    10.1016/j.ultsonch.2016.11.025
    ISSN
    1350-4177
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/52432
    Collection
    • Curtin Research Publications
    Abstract

    © 2016 Elsevier B.V.In this work, ultrasound-assisted adsorption of an anionic dye, sunset yellow (SY) and cationic dyes, malachite green (MG), methylene blue (MB) and their ternary dye solutions onto Cu@ Mn-ZnS-NPs-AC from water aqueous was optimized by response surface methodology (RSM) using the central composite design (CCD). The adsorbent was characterized using Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDX) and EDX mapping images. The effects of various parameters such as pH, sonication time, adsorbent mass and initial concentrations of SY, MG and MB were examined. A total 33 experiments were conducted to establish a quadratic model. Cu@ Mn-ZnS-NPs-AC has the maximum adsorption efficiency (>99.5%) when the pH, sonication time, adsorbent mass and initial concentrations of SY, MG and MB were optimally set as 6.0, 5 min, 0.02 g, 9, 12 and 12 mg L-1, respectively. Sonication time has a statistically significant effect on the selected responses. Langmuir isotherm model was found to be best fitted to adsorption and adsorption capacities were 67.5 mg g-1 for SY, 74.6 mg g-1 for MG and 72.9 mg g-1 for MB. Four kinetic models (pseudo-first order, pseudo-second order, Weber–Morris intraparticle diffusion rate and Elovich) were tested to correlate the experimental data and the sorption was fitted well with the pseudo-second order kinetic model.

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