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Dye‐ligand immobilized IPNs membrane for removal heavy metal ions
Author(s) -
Bayramoğlu Gülay,
Yalçın Emine,
Genç Ömer,
Arıca M. Yakup
Publication year - 2003
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200351322
Subject(s) - membrane , metal ions in aqueous solution , adsorption , sorption , chemistry , nuclear chemistry , metal , aqueous solution , chitosan , reactive dye , ligand (biochemistry) , swelling , materials science , organic chemistry , dyeing , biochemistry , receptor , composite material
Abstract We have developed a novel approach to obtain high metal sorption capacity utilizing a membrane containing chitosan and an immobilized reactive dye (i.e. Reactive Yellow‐2). The composite membrane was characterized by SEM, FT‐IR, swelling test, and elemental analysis. The membrane has uniform small pores distribution and the pore dimensions are between 5 and 10 μm, and the HEMA:chitosan ratio was 50:1. The reactive dye immobilized composite membrane was used in the removal of heavy metal ions [i.e., Pb(II), Hg(II) and Cd(II)] from aqueous medium containing different amounts of these ions (5‐600 mg l −1 ) and at different pH values (2.0‐7.0). The maximum adsorption capacities of heavy metal ions onto the composite membrane under non‐competitive conditions were 64.3 mmol m −2 for Pb(II), 52.7 mmol m −2 for Hg(II), 39.6 mmol m −2 for Cd(II) and the affinity order was Pb(II) > Hg(II)>Cd(II).