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Adsorption of disperse blue 2BLN by microwave activated red mud

Authors

  • Jie Fu,

    1. School of Life Sciences, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
    2. School of the Environment, State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing 210093, China
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  • Ran Song,

    1. School of Life Sciences, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
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  • Wen-Jun Mao,

    1. School of Life Sciences, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
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  • Qing Wang,

    1. School of the Environment, State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing 210093, China
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  • Shu-Qing An,

    1. School of the Environment, State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing 210093, China
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  • Qing-Fu Zeng,

    1. Engineering Research Center for Clean Production of Textile Dyeing and Printing of Ministry of Education, Wuhan University of Science & Engineering, Wuhan 430073, China
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  • Hai-Liang Zhu

    Corresponding author
    1. School of Life Sciences, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
    2. School of the Environment, State Key Laboratory of Pollution Control and Resource Reuse, Nanjing University, Nanjing 210093, China
    • School of Life Sciences, State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing 210093, China
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Abstract

The ability of red mud (RM) to adsorb disperse blue 2BLN from water was studied and the condition of adsorption process was optimized. The results showed that the microwave activated RM had good adsorption capacity. The adsorption process was in accord with Langmuir isotherm model. The saturated adsorption amount of disperse blue 2BLN by activated RM was ∼45 mg/g. The factors that affected the adsorption process included dosage of RM, temperature, and pH value. The optimal condition was 40°C, pH 3.0, 15 g/L RM and 30 min reaction time, under which the removal percentages of color, chemical oxygen demand and total organic carbon reached ∼99%, 64% and 50%, respectively. © 2010 American Institute of Chemical Engineers Environ Prog, 2010

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