Adsorptive Removal of Acid Green 20 from Aqueous Solutions by Biomass Ash and Activated Carbon

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  • ABSTRACT

    Study on the removal of Acid Green 20 by adsorption on indigenously prepared activated carbons from cow dung, mango stone, parthenium leaves and commercial activated carbon have been carried out with an aim to obtain information on treating effluents from tanneries. The effects of various experimental parameters have been investigated by following the batch adsorption technique. Adsorption data was modeled with the Freundlich and Langmuir isotherms. Removal of Acid Green 20 was found to be favorable using Biomass ash and could be considered as alternatives to commercial activated carbon for the treatment of tannery effluents, especially for the removal of dye(s).


  • 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 Green 20 at pH 8.63.
    Adsorption isotherm of Acid Green 20 at pH 8.63.
  • [Fig. 2.] Langmuir isotherm of Acid Green 20 at pH 8.63.
    Langmuir isotherm of Acid Green 20 at pH 8.63.
  • [Fig. 3.] Freundlich isotherm of Acid Green 20 at pH 8.63.
    Freundlich isotherm of Acid Green 20 at pH 8.63.
  • [Fig. 4.] Adsorption isotherm of Acid Green 20 at pH 10.20.
    Adsorption isotherm of Acid Green 20 at pH 10.20.
  • [Fig. 5.] Langmuir isotherm of Acid Green 20 at pH 10.20.
    Langmuir isotherm of Acid Green 20 at pH 10.20.
  • [Fig. 6.] Freundlich isotherm of Acid Green 20 at pH 10.20.
    Freundlich isotherm of Acid Green 20 at pH 10.20.
  • [Table 2.] Values of different constants for polynomial fit data
    Values of different constants for polynomial fit data
  • [Fig. 7.] Adsorption isotherm of Acid Green 20 at pH 6.59.
    Adsorption isotherm of Acid Green 20 at pH 6.59.
  • [Fig. 8.] Langmuir isotherm of Acid Green 20 at pH 6.59.
    Langmuir isotherm of Acid Green 20 at pH 6.59.
  • [Fig. 9.] Freundlich isotherm of Acid Green 20 at pH 6.59.
    Freundlich isotherm of Acid Green 20 at pH 6.59.
  • [Fig. 10.] Adsorption isotherms of Acid Green 20 for cow dung ash at pH 8.63 10.20 and 6.59.
    Adsorption isotherms of Acid Green 20 for cow dung ash at pH 8.63 10.20 and 6.59.
  • [Fig. 11.] Adsorption isotherms of Acid Green 20 for mango stone ash at pH 8.63 10.20 and 6.59.
    Adsorption isotherms of Acid Green 20 for mango stone ash at pH 8.63 10.20 and 6.59.
  • [Fig. 12.] Adsorption isotherms of Acid Green 20 for parthenium leaves ash at pH 8.63 10.20 and 6.59.
    Adsorption isotherms of Acid Green 20 for parthenium leaves ash at pH 8.63 10.20 and 6.59.
  • [Fig. 13.] Adsorption isotherms of Acid Green 20 for carbon at pH 8.63 10.20 and 6.59.
    Adsorption isotherms of Acid Green 20 for carbon at pH 8.63 10.20 and 6.59.
  • [Fig. 14.] Langmuir isotherms of Acid Green 20 for cow dung ash at pH 8.63 10.20 and 6.59.
    Langmuir isotherms of Acid Green 20 for cow dung ash at pH 8.63 10.20 and 6.59.
  • [Fig. 15.] Langmuir isotherms of Acid Green 20 for mango stone ash at pH 8.63 10.20 and 6.59.
    Langmuir isotherms of Acid Green 20 for mango stone ash at pH 8.63 10.20 and 6.59.
  • [Fig. 16.] Langmuir isotherms of Acid Green 20 parthenium leaves ash at pH 8.63 10.20 and 6.59.
    Langmuir isotherms of Acid Green 20 parthenium leaves ash at pH 8.63 10.20 and 6.59.
  • [Fig. 17.] Langmuir isotherms of Acid Green 20 carbon at pH 8.63 10.20 and 6.59.
    Langmuir isotherms of Acid Green 20 carbon at pH 8.63 10.20 and 6.59.
  • [Fig. 18.] Freundlich isotherms of Acid Green 20 cow dung ash at pH 8.63 10.20 and 6.59.
    Freundlich isotherms of Acid Green 20 cow dung ash at pH 8.63 10.20 and 6.59.
  • [Table 3.] Values of different constants for Langmuir isotherms at various pH
    Values of different constants for Langmuir isotherms at various pH
  • [Fig. 19.] Freundlich isotherms of Acid Green 20 for mango stone ash at pH 8.63 10.20 and 6.59.
    Freundlich isotherms of Acid Green 20 for mango stone ash at pH 8.63 10.20 and 6.59.
  • [Fig. 20.] Freundlich isotherms of Acid Green 20 for parthenium leaves ash at pH 8.63 10.20 and 6.59.
    Freundlich isotherms of Acid Green 20 for parthenium leaves ash at pH 8.63 10.20 and 6.59.
  • [Fig. 21.] Freundlich isotherms of Acid Green 20 for carbon at pH 8.63 10.20 and 6.59.
    Freundlich isotherms of Acid Green 20 for carbon at pH 8.63 10.20 and 6.59.
  • [Table 4.] Values of different constants for Freundlich isotherms at various pH
    Values of different constants for Freundlich isotherms at various pH