In this study, an investigation into the adsorption capacity of water hyacinth biomass (WHB) and oxalic acid modified WHB in removing metals (Zn and Pb) ions from wastewater (industrial effluent) was assessed. The impact of the matrix (presence of other ions) on the adsorption of Zn and Pb were also studied by comparing the adsorption of single-metal ions solutions containing equal molar ions to that of the wastewater. The adsorption process was carried out, under two varying conditions of contact time and adsorbent dosage. The concentrations of heavy metals before and after the adsorption process were analyzed using atomic adsorption spectrophotometer (AAS).
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