Synthesis of Chelating Adsorbent (2,2'-Iminodibenzoic Acid-crosslinked Chitosan) and Adsorptivity of Pb(II), Cu(II), Cd(II)

킬레이트 흡착제(2,2'-Iminodibenzoic acid-가교 chitosan)의 합성과 Pb(II), Cu(II), Cd(II)의 흡착력에 관한 연구

  • Received : 1998.08.04
  • Published : 1998.12.25

Abstract

Crosslinked chitin was prepared from epichlorohydrin and chitin which was isolated from waste marin source. The crosslinked chitosan were prepared by the deacetylation of the crosslinked chitin with a strong base. 2,2'-Iminodibenzoic acid-crosslinked chitosan was prepared by reacting 2,2'-Iminodibenzoic acid salt with crosslinked chitosan-Cl which was obtained by chlorination of crosslinked chitosan. The adsorptivity of Pb(II), Cu(II), Cd(II) was studied as a synthetic adsorbent. Experimental results for the adsorption and the recovery characteristics showed that the more pH increase, the more amount of adsorbed metal ion increase. Optimum adsorption time was 1 hr, and adsorption capacity was increased in order of $Cu^{2+}$<$Cd^{2+}$<$Pb^{2+}$, and recovery capacity was increased in order of $Cd^{2+}$<$Cu^{2+}$<$Pb^{2+}$.

Keywords

chelating adsorbents;ion exchanger;adsorption capacity;2,2'-Iminodibenzoic acid crosslinked chitosan

Acknowledgement

Supported by : 단국대학교