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Removal of Arsenic Using a Cationic Polymer Gel Impregnated with Iron Hydroxide
Published on: June 28, 2019
Speciation-dependent studies on removal of arsenic by iron-doped calcium alginate beads
Anupam Banerjee1, Dalia Nayak, Susanta Lahiri
1Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata 700019, India.
Abstract:
This work aims to study the differential attitude of Fe-doped calcium alginate (Fe-CA) beads towards As(III) and As(V) compounds so that speciation-dependent environmentally sustainable methodologies can be developed for removal of arsenic from contaminated water. Throughout the experiment, (76)As has been used as precursor of stable arsenic. The affinity of As(V) towards the Fe-CA beads is greater than that of As(III). Removal efficiency of Fe-CA beads for As(V) increases with increasing number of beads and longer shaking times. At pH 3, 30 Fe-CA beads remove As(V) completely from a solution containing 20mgkg(-1) As(V). The technique has been successfully applied to the ground water collected from an arsenic-contaminated area.
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