Application of Sediment from Water Supply Process for Removing Heavy Metals in Industrial Wastewater
Keywords:
Water supply sediment, Heavy metals, Adsorption mechanismAbstract
Water supply sediment (WSS) was used as adsorbent for the removal of heavy metals (Chromium Manganese Nickel Zinc Copper Cadmium and Lead) from aqueous solutions. The maximum adsorption capacities of heavy metals by powder-WSS were 1.47, 1.72, 1.76, 1.81, 1.82, 1.79 and 1.90 mg/g respectively at contact time of 60 min and by
bead-WSS were 1.28, 1.46, 1.49, 1.60, 1.67, 1.59 and 1.75 mg/g respectively at contact time of 120 min. The adsorption mechanism of powder-WSS and bead-WSS could be fitted by Freundlich isotherm and Langmuir isotherm respectively. Removal of 7 heavy metals from aqueous solution 500.00 mL of 40.00 mg/L of each metal by adsorption onto powder-WSS and bead-WSS were investigated. Powder-WSS was able to remove heavy metals of 50.53, 73.37, 68.92, 91.89, 90.12, 93.86 and 94.49 % respectively while bead-WSS managed to remove 48.82, 61.43, 54.64, 68.04, 83.68, 61.78 and 89.46% respectively
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