Biosorption Mechanism of Aqueous Pb<sup>2+</sup>, Cd<sup>2+</sup>, and Ni<sup>2+</sup> Ions on Extracellular Polymeric Substances (EPS)

<div>Functional group analysis of EPS before and after Pb<sup>2+</sup>, Cd<sup>2+</sup>, and Ni<sup>2+</sup> adsorption.</div>

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Figure 3: Biosorption Mechanism of Aqueous Pb<sup>2+</sup>, Cd<sup>2+</sup>, and Ni<sup>2+</sup> Ions on Extracellular Polymeric Substances (EPS) 