Enhanced adsorption of Methylene Blue from aqueous solution by chitosan-g-poly (acrylic acid)/vermiculite hydrogel composites

https://doi.org/10.1016/S1001-0742(09)60134-0Get rights and content

Abstract

A series of chitosan-g-poly (acrylic acid)/vermiculite hydrogel composites were synthesized and used as adsorbents for the investigation of the effect of process parameters such as vermiculite content, pH of dye solution, contact time, initial concentration of dye solution, temperature, ionic strength and concentration of surfactant sodium dodecyl sulfate on the removal of Methylene Blue (MB) from aqueous solution. The results showed that the adsorption capacity for dye increased with increasing pH, contact time and initial dye concentration, but decreased with increasing temperature, ionic strength and sodium dodecyl sulfate concentration in the present of the surfactant. The adsorption kinetics of MB onto the hydrogel composite followed pseudo second-order kinetics and the adsorption equilibrium data obeyed Langmuir isotherm. By introducing 10 wt.% vermiculite into chitosan-g-poly (acrylic acid) polymeric network, the obtaining hydrogel composite showed the highest adsorption capacity for MB, and then could be regarded as a potential adsorbent for cationic dye removal in a wastewater treatment process.

References (45)

  • AT Paulino et al.

    Removal of Methylene Blue dye from an aqueous media using superabsorbent hydrogel supported on modified polysaccharide

    Journal of Colloid and Interface Science

    (2006)
  • J Ghasemi et al.

    Thermodynamics' study of the adsorption process of Methylene Blue on activated carbon at different ionic strengths

    Journal of Chemical Thermodynamics

    (2007)
  • BH Hameed

    Spent tea leaves: A new non-conventional and low-cost adsorbent for removal of basic dye from aqueous solutions

    Journal of Hazardous Materials

    (2009)
  • YS Ho et al.

    Sorption of dye from aqueous solution by peat

    Chemical Engineering Journal

    (1998)
  • P Janoš et al.

    Sorption of dyes from aqueous solution onto fly ash

    Water Research

    (2003)
  • P Janoš et al.

    Effects of surfactants on the adsorptive removal of basic dyes from water using an organomineral sorbent–iron humate

    Journal of Colloid and Interface Science

    (2005)
  • N Kannan et al.

    Kinetics and mechanism of removal of Methylene Blue by adsorption on various carbons – a comparative study

    Dyes and Pigments

    (2001)
  • V Meshko et al.

    Adsorption of basic dyes on granular acivated carbon and natural zeolite

    Water Research

    (2001)
  • BK Nandi et al.

    Adsorption characteristics of brilliant green dye on kaolin

    Journal of Hazardous Materials

    (2009)
  • AS Özcan et al.

    Adsorption of acid dyes from aqueous solutions onto acid-activated bentonite

    Journal of Colloid and Interface Science

    (2004)
  • A Özer et al.

    Removal of Methylene Blue from aqueous solution by dehydrated wheat bran carbon

    Journal of Hazardous Materials

    (2007)
  • AT Paulino et al.

    Removal of Methylene Blue dye from an aqueous media using superabsorbent hydrogel supported on modi ed polysaccharide

    Journal of Colloid and Interface Science

    (2006)
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