Cadmium Removal Using Magnetized Chitosan Beads From Wastewater

Abstract

Priti Rani and PS Jassal

The deterioration of our water resources due to indiscriminate discharge of untreated industrial effluents containing toxic metals, various dyes, untreated sewage and other anthropogenic activities like urbanization, population growths and land development along river basin have become major concerns throughout the world. There is a need for the appropriate method for removal of heavy toxic metals from the drinking water. In this research work, magnetic chitosan beads have been synthesized for the removal cadmium metal ions from wastewater. The magnetic beads were characterized by using FTIR, TGA and EDAX techniques. Particle and crystal size were determined using scanning electron microscopy, SEM and X-ray diffraction, XRD techniques respectively. The various parameters taken were pH (2- 12), temperatures (40-600 C) and contact time (1-4h) for this research work. The results showed that the optimal adsorbent dosage was 0.04g from the working range of 0.01-0.04g respectively. The RL values calculated were within the range of 0�?RL �?1 showing the adsorption process is favourable one. Different isotherm constants for Cd (II) at the equilibrium were calculated from the Langmuir, Freundlich and Temkinisotherms. Importance of magnetic beads lies with the removal of cadmium from wastewater due to low cost, environment friendly and its regeneration for further use.

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