Adsorption of copper (Ii) and nickel (Ii) ions from metal solution using graft copolymer of cellulose extracted from the sisal fiber with acrylonitrile monomer

This study mainly concerns with the removal of heavy metal ions such as copper and nickel from aqueous solution with the prepared cellulose graft acrylonitrile as an adsorbent using adsorption process. The effect of pH, contact time, and initial adsorbent dosage on the metal ion adsorption capacity was investigated. The obtained results indicate that the adsorption amount of heavy metal ions increased with the increase of shaking time, adsorbent dose and pH of the media which revealed that the optimum pH and adsorbent dosage for both Cu(II) and Ni(II) was found to be pH 5 and 4 gm. The optimum contact time for copper and nickel metal ion was observed to be around 200 minutes and 240 minutes. The experimental results were examined using the Langmuir and Freundlich isotherms to obtain the appropriate model. The observed results indicate that the Freundlich equation was the best model for both Cu(II) ion and Ni(II). From the above results it was concluded that the cellulose graft acrylonitrile copolymer was found to be the efficient adsorbent for copper(II) and nickel (II) under optimum conditions.