Acid Blue 92 (Leather Dye) Removal from Wastewater by Adsorption using Biomass Ash and Activated Carbon

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  • ABSTRACT

    The adsorption of Acid Blue 92 onto three low cost and ecofriendly biosorbents viz., cow dung ash, mango stone ash and parthenium leaves ash and commercial activated carbon have discussed in this work. The ash of all the mentioned bio-wastes was prepared in the muffle furnace at 500oC and all the adsorbents were stored in an air thermostat. Experiments at total dye concentrations of 10~100 mg/L were carried out with a synthetic effluent prepared in the laboratory. The parameters such as pH and dye concentration were varied. Equilibrium adsorption data followed both Langmuir and Freundlich isotherms. The results indicate that cow dung ash, mango stone ash and parthenium leaves ash could be employed as low-cost alternatives to commercial activated carbon in wastewater treatment for the removal of dye.


  • KEYWORD

    Adsorption , Biomass ash , Activated carbon , Leather dye , Isotherms

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  • [Table 1.] Concentration of Dye (Ce) and Amount of Dye Adsorbed Per Gram of the Adsorbent (qe) at Different pH
    Concentration of Dye (Ce) and Amount of Dye Adsorbed Per Gram of the Adsorbent (qe) at Different pH
  • [Fig. 1.] Adsorption isotherm of Acid Blue 92 at pH 6.90.
    Adsorption isotherm of Acid Blue 92 at pH 6.90.
  • [Fig. 2.] Langmuir isotherm of Acid Blue 92 at pH 6.90.
    Langmuir isotherm of Acid Blue 92 at pH 6.90.
  • [Fig. 3.] Freundlich isotherm of Acid Blue 92 at pH 6.90.
    Freundlich isotherm of Acid Blue 92 at pH 6.90.
  • [Fig. 4.] Adsorption isotherm of Acid Blue 92 at pH 4.95.
    Adsorption isotherm of Acid Blue 92 at pH 4.95.
  • [Fig. 5.] Langmuir isotherm of Acid Blue 92 at pH 4.95.
    Langmuir isotherm of Acid Blue 92 at pH 4.95.
  • [Fig. 6.] Freundlich isotherm of Acid Blue 92 at pH 4.95.
    Freundlich isotherm of Acid Blue 92 at pH 4.95.
  • [Fig. 7.] Adsorption isotherm of Acid Blue 92 at pH 8.61.
    Adsorption isotherm of Acid Blue 92 at pH 8.61.
  • [Table 2.] Values of Different Constants for Polynomial Fit Data
    Values of Different Constants for Polynomial Fit Data
  • [Fig. 8.] Langmuir isotherm of Acid Blue 92 at pH 8.61.
    Langmuir isotherm of Acid Blue 92 at pH 8.61.
  • [Fig. 9.] Freundlich isotherm of Acid Blue 92 at pH 8.61.
    Freundlich isotherm of Acid Blue 92 at pH 8.61.
  • [Fig. 10.] Adsorption isotherm of Acid Blue 92 for cow dung ashat pH 6.90 4.95 and 8.61.
    Adsorption isotherm of Acid Blue 92 for cow dung ashat pH 6.90 4.95 and 8.61.
  • [Fig. 11.] Adsorption isotherm of Acid Blue 92 for mango stoneash at pH 6.90 4.95 and 8.61.
    Adsorption isotherm of Acid Blue 92 for mango stoneash at pH 6.90 4.95 and 8.61.
  • [Fig. 12.] Adsorption isotherm of Acid Blue 92 for partheniumleaves ash at pH 6.90 4.95 and 8.61.
    Adsorption isotherm of Acid Blue 92 for partheniumleaves ash at pH 6.90 4.95 and 8.61.
  • [Fig. 13.] Adsorption isotherm of Acid Blue 92 for carbon at pH6.90 4.95 and 8.61.
    Adsorption isotherm of Acid Blue 92 for carbon at pH6.90 4.95 and 8.61.
  • [Fig. 14.] Langmuir isotherm of Acid Blue 92 for cow dung ashat pH 6.90 4.95 and 8.61.
    Langmuir isotherm of Acid Blue 92 for cow dung ashat pH 6.90 4.95 and 8.61.
  • [Fig. 15.] Langmuir isotherm of Acid Blue 92 for mango stoneash at pH 6.90 4.95 and 8.61.
    Langmuir isotherm of Acid Blue 92 for mango stoneash at pH 6.90 4.95 and 8.61.
  • [Fig. 16.] Langmuir isotherm of Acid Blue 92 for partheniumleaves at pH 6.90 4.95 and 8.61.
    Langmuir isotherm of Acid Blue 92 for partheniumleaves at pH 6.90 4.95 and 8.61.
  • [Fig. 17.] Langmuir isotherm of Acid Blue 92 for carbon at pH6.90 4.95 and 8.61.
    Langmuir isotherm of Acid Blue 92 for carbon at pH6.90 4.95 and 8.61.
  • [Table 3.] Values of Different Constants for Langmuir Isotherms at Various pH
    Values of Different Constants for Langmuir Isotherms at Various pH
  • [Fig. 18.] Freundlich isotherm of Acid Blue 92 for cow dung ashat pH 6.90 4.95 and 8.61.
    Freundlich isotherm of Acid Blue 92 for cow dung ashat pH 6.90 4.95 and 8.61.
  • [Fig. 19.] Freundlich isotherm of Acid Blue 92 for mango stoneash at pH 6.90 4.95 and 8.61.
    Freundlich isotherm of Acid Blue 92 for mango stoneash at pH 6.90 4.95 and 8.61.
  • [Fig. 20.] Freundlich isotherm of Acid Blue 92 for partheniumleaves ash at pH 6.90 4.95 and 8.61.
    Freundlich isotherm of Acid Blue 92 for partheniumleaves ash at pH 6.90 4.95 and 8.61.
  • [Fig. 21.] Freundlich isotherm of Acid Blue 92 for carbon at pH6.90 4.95 and 8.61.
    Freundlich isotherm of Acid Blue 92 for carbon at pH6.90 4.95 and 8.61.
  • [Table 4.] Values of Different Constants for Freundlich Isotherms at Various pH
    Values of Different Constants for Freundlich Isotherms at Various pH