Sorption behavior of iminodiacetic acid resin for indium

Chunhua XIONG; Caiping YAO

doi:10.1016/S1001-0521(08)60106-0

Sorption behavior of iminodiacetic acid resin for indium

Chunhua XIONG, Caiping YAO

Źródło

Rare Metals > 2008 > 27 > 2 > 153-157

Abstrakt

In(III) was quantitatively adsorbed by iminodiacetic acid resin (IDAAR) in the medium of pH = 4.52. The statically saturated sorption capacity 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 ΔH = 17.2 kJ·mol ⁻¹ .