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The effect of the phase contact time on the heavy metals ions’ adsorption on activated carbons (a) Cu(II) ions’ adsorption, (b) Zn(II) ions’ adsorption, and (c) simultaneous adsorption of Zn(II) and Cu(II); Cinit 10 mg/L, pH 6, mass of sorbent: 0.01 g, time 360 min, shaking speed 180 rpm, temperature 22 ± 2 °C.
