Abstract
Functionalized cellulose (Chelest Fiber IRY, abbreviated as IRY) with imminodiacetic acid was used to separate and concentrate trace Mn (II) from aqueous solution in both batch and column experiments. 200 mg of Mn (II) was quantitatively retained at pH>4 by using 0.3g of adsorbents, stirring time was more than 5min, and aqueous phase volume was 100mL. The retention of 20μg of Mn (II) on the adsorbent (1.0g) was not affected by the flow rate of sample solution up to 25mL/min (studied flow rate range 4-25mL/min). The sorbed Mn (II) was eluted with 10mL 1mol/L HNO3at a flow rate of about 5mL/min, with a recovery rate of over 98%. The sorption follows Langmuir and Freundlich isotherms. The maximum sorption capacity was found to be 0.75mmol/g IRY. The developed method was applied to the separation and determination of trace Mn (II) in saline samples.
