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Kinetics and Thermodynamic Properties Related to the Adsorption of Copper and Zinc onto Zeolite Synthesized from Coal Fly Ash
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 Title & Authors
Kinetics and Thermodynamic Properties Related to the Adsorption of Copper and Zinc onto Zeolite Synthesized from Coal Fly Ash
Lee, Chang-Han; Ambrosia, Matthew Stanley;
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 Abstract
Na-A zeolite (Z-Cl) was synthesized from coal fly ash, which is a byproduct of coal combustion for the generation of electricity. The adsorption of and onto Z-C1 was investigated via batch tests over a range of temperatures (303.15 to 323.15 K). The resultant experimental equilibrium data were compared to theoretical values calculated using model equations. With these results, the kinetics and equilibrium parameters of adsorption were calculated using Lagergren and Langmuir-Freundlich models. The adsorption kinetics revealed that the pseudo second-order kinetic mechanism is predominant. The maximum adsorption capacity () values were 139.0-197.9 mg /g and 75.0-105.1 mg . Calculation of the thermodynamic properties revealed that the absorption reactions for both and were spontaneous and endothermic. Collectively, these results suggest that the synthesized zeolite, Z-C1, can potentially be used as an adsorbent for metal ion recovery during the treatment of industrial wastewater at high temperatures.
 Keywords
Coal fly ash;Zeolite;Copper;Zinc;Lagergren;Langmuir;Freundlich;Thermodynamics;
 Language
English
 Cited by
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Journal of Environmental Science International, 2015. vol.24. 5, pp.671-678 crossref(new window)
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