1. Pb(II) being removed by GO-AC@Cyst-C, 99.25% Pb(II) being removed by GO-AC@Pal-C, and 98.97% Pb(II) being removed by GO-AC@flg-C. However, GNPs-AC@microalgae removed below 90.0% of Pb(II) in just 90 min. In comparison to GNPs-AC@microalgae, GO-AC@microalgae-based nanoadsorbents, demonstrate excellent adsorption efficiency of Pb(II) metal ions from aqueous solutions. Fig;Effect of contact time on % removal of Pb 2+ ions
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