Efficiency of Superparamagnetic Nano Iron Oxide loaded Poly (Acrylamide-co-Acrylic acid) Hydrogel in Uptaking Pb 2+ Ions from Water

Tiwari Alka, Sharma Neeraj
2012 Int. Res. J. Environment Sci. International Science Congress Association   unpublished
A novel adsorbent, superparamagnetic nano iron oxide loaded poly (acrylamide-co-acrylic acid) hydrogel (superparamagnetic PAA hydrogel), was employed for the removal of toxic lead ions from aqueous solution. The influence of pH, contact time, metal ion concentration, adsorbent dose and temperature on the sensitivity of the removal process was investigated. The synthesized copolymer was magnetized insitu and the size, structure and coating of magnetic nano particles were characterized by TEM,
more » ... and FTIR analysis respectively. The sorption data was analyzed and fitted to linearized adsorption isotherm of the Langmuir, Freundlich and Temkin equations respectively. This hydrogel has been found to be an efficient adsorbent for toxic Pb 2+ ions removal from water (>98% removal) and could be regenerated efficiently (>99%).