Adsorption properties of ionic species on cross-linked chitosans modified with catechol and salicylic acid moieties.
Catechol-type chitosan resin and salicylic acid-type chitosan resin were easily synthesized for use in estimating the adsorption behavior of 34 elements at pH 1 - 7 in aquatic media. The catechol-type chitosan resin could adsorb Cu(II) at pH 3 - 7, In(III) at pH 4 - 6, Pb(II) and lanthanoids at pH 5 - 7, and U(VI) at pH 4 - 7 more effectively than the salicylic acid-type chitosan resin and the cross-linked chitosan resin (base material). Adsorption ability was in the order: catechol-type chitosan resin > salicylic acid-type chitosan resin > cross-linked chitosan resin.
Oshita
Koji
K
Department of International Conservation Studies for Cultural Properties, Faculty of Cultural Properties, Kibi International University, Okayama, Japan. oshita@kiui.ac.jp
Takayanagi
Toshio
T
Oshima
Mitsuko
M
Motomizu
Shoji
S
D000327:Adsorption; D002396:Catechols / Q000737:chemistry*; D048271:Chitosan / Q000032:analysis* / Q000737:chemistry*; D003432:Cross-Linking Reagents / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007477:Ions / Q000737:chemistry; D013058:Mass Spectrometry; D015394:Molecular Structure; D020156:Salicylic Acid / Q000737:chemistry*
D002396:Catechols; D003432:Cross-Linking Reagents; D007477:Ions; D048271:Chitosan; C034221:catechol; D020156:Salicylic Acid