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Shao Hong, Cao Ning, Xu Weixue. Pretreatment of aquacultural wastewater by 8-hydroxyquinoline modified bentonite[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 890-896.
Citation: Shao Hong, Cao Ning, Xu Weixue. Pretreatment of aquacultural wastewater by 8-hydroxyquinoline modified bentonite[J]. Chinese Journal of Environmental Engineering, 2013, 7(3): 890-896.
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Pretreatment of aquacultural wastewater by 8-hydroxyquinoline modified bentonite

  • 1.

    Institute of Environmental and Biological Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China

  • Received Date: 11/02/2012
    Accepted Date: 11/11/2011
    Available Online: 18/03/2013
    Fund Project:
  • A new adsorption material was synthesized using 8-hydroxyquinoline and natural bentonite. And the new type of adsorbent was applied to pretreat aquacultural wastewater. The modified bentonite optimal synthesis conditions were studied: the solid-liquid of 4 g/L, cross-linker concentration of 0.3 g/L, contact time of 50 min, reaction temperature of 50℃. The structural characterization and morphology of the modified bentonites was observed by means of scanning electron microscopy. The 8-hydroxyquinoline entered into the bentonite interplanar space effectively. Some characters of the bentonite were changed and the adsorption effects were improved. The reaction conditions of aquaculture wastewater pretreatment on modified bentonite were optimized as follows: adsorbent dosage of 1 g/L, pH of 4, adsorption time of 30 min, stirring speed of 350 r/min, sedimentation time of 40 min. The result showed that the COD removal rate reached 79.18%. By kinetic calculation, it was proved that the adsorption reaction was consistent with the secondary dynamic model.
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Pretreatment of aquacultural wastewater by 8-hydroxyquinoline modified bentonite

  • Received Date: 11/02/2012
  • Accepted Date: 11/11/2011
  • Available Online: 18/03/2013
Fund Project:

Abstract: A new adsorption material was synthesized using 8-hydroxyquinoline and natural bentonite. And the new type of adsorbent was applied to pretreat aquacultural wastewater. The modified bentonite optimal synthesis conditions were studied: the solid-liquid of 4 g/L, cross-linker concentration of 0.3 g/L, contact time of 50 min, reaction temperature of 50℃. The structural characterization and morphology of the modified bentonites was observed by means of scanning electron microscopy. The 8-hydroxyquinoline entered into the bentonite interplanar space effectively. Some characters of the bentonite were changed and the adsorption effects were improved. The reaction conditions of aquaculture wastewater pretreatment on modified bentonite were optimized as follows: adsorbent dosage of 1 g/L, pH of 4, adsorption time of 30 min, stirring speed of 350 r/min, sedimentation time of 40 min. The result showed that the COD removal rate reached 79.18%. By kinetic calculation, it was proved that the adsorption reaction was consistent with the secondary dynamic model.

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