In this study, a modified adsorbent, alginate complex beads, was prepared and applied to the removal of mixed contaminants from wastewater. The alginate complex beads were generated by the immobilization of powdered activated carbon and synthetic zeolites onto alginate gel beads, which were then dried at 110 °C for 20 h until the diameter had been reduced to 1 mm. This dry technique increased the hardness of the adsorbent to assure its durability and application. The adsorption onto the alginate complex beads of organic and inorganic compounds, as target contaminants, was investigated by performing both equilibrium and kinetic batch experiments. From the adsorption isotherms, according to the Langmuir equation, the alginate complex bead was capable of effectively removing benzene, toluene, zinc and cadmium. From kinetic batch experiments, the removal efficiencies of benzene, toluene, zinc and cadmium were found to be 66.5, 92.4, 74.1 and 76.7%, respectively, for initial solution concentrations of 100 mg L−1. The results indicated that the adsorbent developed in this study has the potential to be a promising material for the removal of mixed pollutants from industrial wastewater or contaminated groundwater.
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Research Article|
November 01 2011
Development of adsorbent for the simultaneous removal of organic and inorganic contaminants from aqueous solution
J. W. Choi;
J. W. Choi
1Water Research Center, Korea Institute of Science and Technology, P.O. BOX 131, Cheongryang, Seoul 136-791, Republic of Korea
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S. G. Chung;
S. G. Chung
1Water Research Center, Korea Institute of Science and Technology, P.O. BOX 131, Cheongryang, Seoul 136-791, Republic of Korea
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S. W. Hong;
S. W. Hong
1Water Research Center, Korea Institute of Science and Technology, P.O. BOX 131, Cheongryang, Seoul 136-791, Republic of Korea
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D. J. Kim;
D. J. Kim
2Department of Earth and Environmental Sciences, Korea University, Seoul 136-701, Republic of Korea
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S. H. Lee
1Water Research Center, Korea Institute of Science and Technology, P.O. BOX 131, Cheongryang, Seoul 136-791, Republic of Korea
E-mail: [email protected]
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Water Sci Technol (2011) 64 (9): 1821–1827.
Article history
Received:
January 31 2011
Accepted:
June 23 2011
Citation
J. W. Choi, S. G. Chung, S. W. Hong, D. J. Kim, S. H. Lee; Development of adsorbent for the simultaneous removal of organic and inorganic contaminants from aqueous solution. Water Sci Technol 1 November 2011; 64 (9): 1821–1827. doi: https://doi.org/10.2166/wst.2011.749
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