Liquid-phase adsorption removal of Cu2+, Co2+, Ni2+, Zn2+, and Pb2+ in the concentration range of 5-25 mg/L using low-cost banana and orange peel wastes was examined at 30 oC. Under comparable conditions, the amount of adsorption decreased in the order Pb2+ > Ni2+ > Zn2+ > Cu2+ > Co2+ for both adsorbents. The adsorption isotherms could be better described by the Freundlich equation. The amount of adsorption increased with increasing pH and reached a plateau at pH > 7, which was confirmed by the variations of zeta potentials. The application potential of such cellulose-based wastes for metal removal (up to 7.97 mg Pb2+ per gram of banana peel at pH 5.5) at trace levels appeared to be promising.
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Research Article| January 01 2003
Adsorption of heavy metals from water using banana and orange peels
Water Sci Technol (2003) 47 (1): 185–190.
G. Annadurai, R.S. Juang, D.J. Lee; Adsorption of heavy metals from water using banana and orange peels. Water Sci Technol 1 January 2003; 47 (1): 185–190. doi: https://doi.org/10.2166/wst.2003.0049
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