Development of gum acacia based magnetic nanocomposite adsorbent for wastewater treatment

The present work reports development of a magnetic hydrogel adsorbent material based on the polysaccharide, gum acacia. This graft copolymer nanocomposite acacia and poly(3-chloro-2-hydroxypropylmethacrylate) has been made using microwave assisted technique. Magnetite nanoparticles have generated by in-situ method trapped in network structure. parent hybrid were evaluated as adsorbents for sequestration cationic dyes metal ions from aqueous solution. FTIR, XRD, SEM, TGA, VSM BET studies performed to characterize samples with respect their physical chemical structure, surface nature, thermal stability property. displayed super-paramagnetic nature owing presence magnetite which also influenced adsorption characteristics favourably evident comparative non-magnetic gel. exhibited larger area 2.524 m2g−1 compared 0.481 m2g−1. capability towards methylene blue, rhodamine 6G, Cu(II) Hg(II) are 224.4, 283.5, 282.4 275.3 mgg−1, respectively, enhanced 265.2, 344.4, 307.5 292.8 case nanocomposite. isotherm kinetic indicated fit Freundlich model pseudo-second-order model, respectively. shown be multistep process involving boundary layer diffusion intra-particle playing major roles. thermodynamic analysis manifested an exothermic spontaneous process. adsorption–desorption studied three cycles excellent reusability making it promising wastewater treatment.