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Influence of sorption time on the (a) U(VI) adsorption capacity and (b) removal ratio. U(VI) adsorption kinetic curves: (c) linearized pseudo-first-order and (d) pseudo-second-order kinetic models (C0: 19.7 mg∙L−1, sorbent: 0.2 g, volume: 1 L, NaF: 2.0 g∙L−1, and temperature: 25 °C).
