Fig 2.
Effect of contact time on Cd(II) (a), Zn(II) (b), Cu(II) (c), and Pb(II) (d) adsorption at varied concentrations onto DPAC. (Experimental conditions: m: 0.05 g, V: 50 mL, agitation speed: 100 rpm, T: 298 K, pHi: 7).
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