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  • Continuous flow removal of acid fuchsine by dielectric barrier discharge plasma water bed enhanced by activated carbon adsorption

    Author(s)
    Zhou, Rusen
    Zhou, Renwu
    Zhang, Xianhui
    Bazaka, Kateryna
    Ostrikov, Kostya Ken
    Griffith University Author(s)
    Ostrikov, Ken
    Year published
    2019
    Metadata
    Show full item record
    Abstract
    Continuous processes which allow for large amount of wastewater to be treated to meet drainage standards while reducing treatment time and energy consumption are urgently needed. In this study, a dielectric barrier discharge plasma water bed system was designed and then coupled with granular activated carbon (GAC) adsorption to rapidly remove acid fuchsine (AF) with high efficiency. Effects of feeding gases, treatment time and initial concentration of AF on removal efficiency were investigated. Results showed that compared to the N2 and air plasmas treatments, O2 plasma processing was most effective for AF degradation due ...
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    Continuous processes which allow for large amount of wastewater to be treated to meet drainage standards while reducing treatment time and energy consumption are urgently needed. In this study, a dielectric barrier discharge plasma water bed system was designed and then coupled with granular activated carbon (GAC) adsorption to rapidly remove acid fuchsine (AF) with high efficiency. Effects of feeding gases, treatment time and initial concentration of AF on removal efficiency were investigated. Results showed that compared to the N2 and air plasmas treatments, O2 plasma processing was most effective for AF degradation due to the strong oxidation ability of generated activated species, especially the OH radicals. The addition of GAC significantly enhanced the removal efficiency of AF in aqueous solution and shorten the required time by 50%. The effect was attributed to the ability of porous carbon to trap and concentrate the dye, increasing the time dye molecules were exposed to the plasma discharge zone, and to enhance the production of OH radicals on/in GAC to boost the degradation of dyes by plasma as well as in situ regenerate the exhausted GAC. The study offers a new opportunity for continuous effective remediation of wastewater contaminated with organic dyes using plasma technologies.
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    Journal Title
    Frontiers of Chemical Science and Engineering
    Volume
    13
    Issue
    2
    DOI
    https://doi.org/10.1007/s11705-019-1798-z
    Subject
    Chemical engineering
    Science & Technology
    Technology
    Engineering, Chemical
    Engineering
    continuous removal
    Publication URI
    http://hdl.handle.net/10072/387013
    Collection
    • Journal articles

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