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    Experimental and Kinetic studies on the combined influence of ultrasonication and rare earths on removal of azo dyes

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    Date
    2019
    Author
    Patnala, P.K.
    Tilvi, S.
    Srivastava, P.
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    Abstract
    The aim of the present study is to decolorize azo dyes containing (-N=N-) bonds such as Reactive Black 5 (RB 5), Basic Blue 3 (BB-3) and Disperse Blue 373 (DB 373) in the presence of ultrasound (US) and rare earth (RE), La +3 , Ce +3 , Pr +3 and Gd +3 ions in aqueous solutions. In the presence of US (20 kHz, 250 W) alone, these dyes, in the concentration range 8-144 ppm, were decolourized to different extents, RB5 (~20-17%); BB3 (~40-21%) and DB373 (~47-35%) at different time intervals. However, in combination US with REs, the removal was greater than 90%. The degradation followed pseudo-second-order kinetics.
    URI
    https://doi.org/10.1080/01496395.2018.1549571
    http://drs.nio.org/drs/handle/2264/8186
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