Waste Conversion into Activated Carbon for Heavy Metal Removal from Waste Water
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Activated carbons were prepared from co-mingled natural organic waste, comprising 25% sunflower husks, 50% petroleum waste and 25% low-grade bituminous coal. The porous carbon materials were obtained either by direct activation with steam at 1,123 K, or through pre-oxidation stages with binary eutectic Na/K carbonates, followed by carbonization at 623 K in an inert atmosphere, and then steam activation at 1,123 K. The activated carbons prepared from the co-mingled natural organic wastes were used as adsorbents to remove copper (II), cobalt (III), nickel (II), iron (II), and manganese (II) from real multi-component solutions. Batch experiments were carried out to study the kinetics of multi-component, competitive adsorption. The mechanisms of heavy-metal adsorption on activated carbon are discussed.
Keywords: waste recovery; activated carbon; polluted water; heavy metals; adsorption
KeywordsActivate Carbon Bituminous Coal Heavy Metal Removal Porous Carbon Material Heavy Metal Adsorption
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