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In(Ⅲ) was quantitatively adsorbed by iminodiacetic acid resin (IDAAR) in the medium of pH=4.52.The statically saturated sorption capac- ity of IDAAR is 235.5 mg·g~(-1).1.0 mol·L~(-1) HCl can be used as an eluant.The elution efficiency is 97.9%.The resin can be regenerated and reused without apparent decrease of sorption capacity.The sorption rate constant is k_(298)=1.94×10~(-5)s~(-1).The apparent sorption activation energy of IDAAR for In(Ⅲ) is 20.1 kJ·mol~(-1).The sorption behavior of IDAAR for In(Ⅲ) obeys the Freundlich isotherm.The enthalpy change is AH=17.2 kJ·mol~(-1).
In (Ⅲ) was quantitatively adsorbed by iminodiacetic acid resin (IDAAR) in the medium of pH = 4.52. The statically saturated sorption capacity of IDAAR was 235.5 mg · g -1 .1.0 mol·L -1 ) HCl can be used as an eluant. The elution efficiency is 97.9%. The resin can be regenerated and reused without apparent decrease of sorption capacity. The sorption rate constant is k_ (298) = 1.94 × 10 ~ (-5) s ~ (-1). The sorption behavior of IDAAR for In (Ⅲ) obeys the Freundlich isotherm. Enthalpy change is AH = 17.2 kJ · mol ~ (-1).