Removal of reactive dye from aqueous solutions by adsorption onto activated carbons prepared from sugarcane bagasse pith

  • Amin N
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Bagasse pith, which is the main waste from sugarcane industry in Egypt, has been used as a raw material for the preparation of different activated carbons. Activated carbons were prepared from bagasse pith by chemical activation with 28% H3PO4(AC1), 50% ZnCl2(AC2) followed by pyrolysis at 600°C and by physical activation at 600°C in absence of air (AC3). Different activated carbons have been used for the removal of reactive orange (RO) dye from aqueous solutions. Batch adsorption experiments were performed as a function of initial dye concentration, contact time, adsorbent dose and pH. Adsorption data were modeled using the Langmuir and Freundlich adsorption isotherms. Adsorption kinetic data were tested using pseudo-first-order, pseudo-second-order and intraparticle diffusion models. Kinetic studies showed that the adsorption followed pseudo-second-order reaction with regard to the intraparticle diffusion rate. © 2008.

Author-supplied keywords

  • Activated carbon
  • Adsorption
  • Bagasse pith
  • Reactive dye
  • Removal

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  • Nevine Kamal Amin

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