Add time:07/20/2019         Source:sciencedirect.com

In(III) was quantitatively adsorbed by IMINODIACETIC ACID RESIN (cas 11139-85-8) (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 k298 = 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.

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