Removal of Toxic As (V) Ions by Adsorption onto Alginate and Carboxymethyl Cellulose Beads |
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| Authors: | Alka Tiwari Tulika Dewangan A K Bajpai |
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| Institution: | 1. Research Centre, Department of Chemistry, Govt. V. Y. T. PG. Autonomous College, Durg (C. G.)‐491001, India;2. Bose Memorial Research Laboratory, Department of Chemistry, Government Autonomous Science College, Jabalpur (M.P.)‐482001, India |
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| Abstract: | The removal of arsenic ions from dilute aqueous solutions using biopolymeric beads of crosslinked sodium alginate and carboxymethyl cellulose (CMC) as the adsorbent is reported in this paper. The biopolymeric alginate and carboxymethyl cellulose beads were prepared and characterized by FTIR spectra. On the surfaces of the prepared beads were performed static and dynamic adsorption studies of arsenic ions at fixed pH and ionic strength of the aqueous metal ion solutions. The adsorption data were applied to Langmuir and Freundlich isotherm equations and various static parameters were calculated. The dynamic nature of adsorption was quantified in terms of several kinetic constants such as rate constant for adsorption (k1) and Lagergreen rate constant (Kad). The influence of various experimental parameters such as solid to liquid ratio, pH, temperature, presence of salts and chemical composition of biopolymeric beads were investigated on the adsorption of arsenic ions. |
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| Keywords: | Carboxymethyl cellulose Biosorption Sodium alginate |
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