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Adsorption kinetics of (a) Hg2+ and (b) Ag+ ions onto PTT nanoparticles at 25 °C in 50 mL of Hg(NO3)2 and AgNO3 solution at the same initial Hg2+ and Ag+ concentration of 20 mg·L−1 with 50 mg of adsorbent. Inset: kinetic model plots of the adsorption of Hg2+ and Ag+ onto the nanoparticles.
