[Figure 2] (IMAGE)
Caption
Rare earth metal recovery performance from fibrous materials / Effect of pH on the rare earth recovery performance of fibers for (a) Nd3+ and (b) Dy3+ ions. The initial concentration and adsorbent dosage for each rare earth metal ion were 1000 mg/L and 0.5 g/L, and the reaction time was 24 hours without any pH adjustment. Recovery efficiency of the material for low concentrations of (c) Nd3+ and (d) Dy3+ ions. Isothermal equilibrium curves of the material for (e) Nd3+ and (f) Dy3+ ions. Contact time is 24 hours and performed without pH adjustment. Recovery kinetics curves of CSCF for (g) Nd3+ and (h) Dy3+ ions. Initial concentration is 1000 mg/L and performed without pH adjustment. (i) Maximum recovery capacity (qm) of Nd3+ and Dy3+ of the adsorbent material and (j) recovery rate constant k compared to the adsorbents reported in the top papers.
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Korea Institute of Science and Technology
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