Add time:07/22/2019         Source:sciencedirect.com

This paper reports on the investigation of the loading rate of nickel onto an iminodiacetic acid ion exchange resin (TP207XL) under the finite solution volume condition in the presence of ferrous in a batch loading system. A hybrid correlation model (McKevitt, 2012) was applied for nickel-ferrous displacement loading data. The experimental fit parameters of the hybrid correlation were used to successfully predict the results of the batch loading experiments by applying the finite difference model. The finite difference model was applied to predict the loading behavior of nickel in the presence of ferrous in the batch system using the modified Helfferich number and the linear isotherm equation. As confirmed, the ion exchange reaction examined in this study was predominantly controlled under some combination of intraparticle diffusion/ion exchange reaction. Regarding the hybrid correlation fit parameters (Dapp = 9.95 × 10− 12 m2/s, α = 0.65), these parameters correlated well with the loading behavior of nickel onto resin.

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