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Aminothiozolyl maleamic acid based multi chelating hydrogels for the separation of uranium (VI) ions from aqueous environment
Author(s) -
Sivagangi Reddy N.,
Krishna Rao K.S.V.,
Madhusudana Rao K.,
Parambadath Surendran,
Ha Chang Sik
Publication year - 2016
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3799
Subject(s) - aqueous solution , freundlich equation , adsorption , azobisisobutyronitrile , metal ions in aqueous solution , monomer , langmuir , chelation , nuclear chemistry , acrylate , materials science , self healing hydrogels , uranium , polymer chemistry , polymerization , fourier transform infrared spectroscopy , kinetics , chemistry , chemical engineering , metal , organic chemistry , polymer , metallurgy , engineering , physics , quantum mechanics
Multi chelating hydrogels (MCHs) were synthesized using a simple radical polymerization method from acrylamide, hydroxyethyl acrylate, and N‐(2‐aminothiozolyl)maleamic acid (AMA) monomers, methylenebisacrylamide (MBA) a cross‐linker, and azobisisobutyronitrile (AIBN) an initiator. The resulting MCHs were characterized with Fourier transform infrared spectroscopy and scanning electron microscopy to confirm the formation and morphological properties. The MCHs were highly swellable in aqueous solutions as well as different pH conditions. MCHs were applied to evaluate uptake behavior of Uranium (VI) ion from aqueous solutions. Batch adsorption studies were performed by varying experimental conditions like contact time, pH, and initial metal ion concentration. The kinetics data was best suited with the second‐order equation model. The equilibrium adsorption data was correlated with Langmuir and Freundlich isotherm models. This study suggests that maximum Uranium (VI) ion uptake has been found to be 288 mg.g −1 and regenerated for 5 cycles without any significant change. Copyright © 2016 John Wiley & Sons, Ltd.