Heavy metal removal efficiency depends on the metal species and concentration, the reactivity of the available biopolymers or biomass, and the composition of other wastewatercomponents [2,12,13]. Not only biological and physicochemical conditions determine heavy metal removal in a bio-logical wastewater treatment, but also the process operating conditions and design. However, in spite of theseconditioning factors, various studied metals can be removedin biological wastewater treatment processes [14–17].
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