Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2014 Vol: 6 Issue: 6

The adsorption of nickel ions in aqueous solution by chitosan gel beads


In this study, chitosan beads were produced from chitosan flakes. The researches on adsorptive properties of chitosan beads were carried out. The effect of pH, contact time, temperature and initial concentration were investigated. The results obtained on the adsorption of nickel were analyzed by the well known models given by Langmuir and Freundlich. The maximum adsorption capacity for chitosan gel beads at a temperature of 293K, initial concentration of 40mg/L, contact time of 30min and pH 5.0 in solution was found to be 30.5mg/g. Thermodynamic parameters of the adsorption process such as the standard Gibb’s free energy change, free energy change (DG0 ), enthalpy change ( DH 0 ) and entropy change ( DS 0 ) were calculated. The result showed that adsorption of nickel ions in aqueous solution by chitosan beads was spontaneous and endodermic in nature

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