微波加热制备椰壳活性炭吸附含Pb2+废水特性研究

›› 2007, Vol. 27 ›› Issue (04): 87-91.

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Characteristics of Adsorption of Pb²⁺ from Effluents onto Activated Carbon Prepared from Coconut Shell by Microwave Heating

ZHANG Yong¹, NING Ping¹, GAO Jian-pei¹, PENG Jin-hui², ZHANG Li-bo², YANG Kun-bin², XIA Hong-ying²

1. Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;2. Faculty of Materials and Metallurgical Engineering, Kunming University of Science and Technology, Kunming 650093, China

Received:2006-11-03 Revised:1900-01-01 Online:2007-08-30 Published:2007-08-30

Abstract

Abstract: Adsorption of Pb²⁺ from aqueous solution onto activated carbon prepared from coconut shell by microwave heating(MAC) was investigated in a batch system. The effects of temperature on adsorption thermodynamics were studied. Thermodynamic parameters such as standard Gibbs free energy (ΔG^Θ), standard enthalpy (ΔH^Θ), and standard entropy (ΔS^Θ) were evaluated by applying the Van't Hoff equation. The thermodynamics of Pb²⁺ adsorption onto activated carbon indicates that it is of spontaneous and exothermic nature. Langmuir and Freundlich isotherms were used to analyze the equilibrium data at different temperatures and the equilibrium data were found to be well represented by the Langmuir isotherm equation.

Key words: activated carbon, adsorption, lead, thermodynamics, microwave heating

CLC Number:

TQ424.15

ZHANG Yong;NING Ping;GAO Jian-pei;PENG Jin-hui;ZHANG Li-bo;YANG Kun-bin;XIA Hong-ying. Characteristics of Adsorption of Pb²⁺ from Effluents onto Activated Carbon Prepared from Coconut Shell by Microwave Heating[J]. , 2007, 27(04): 87-91.

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Characteristics of Adsorption of Pb²⁺ from Effluents onto Activated Carbon Prepared from Coconut Shell by Microwave Heating

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Characteristics of Adsorption of Pb2+ from Effluents onto Activated Carbon Prepared from Coconut Shell by Microwave Heating

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Characteristics of Adsorption of Pb²⁺ from Effluents onto Activated Carbon Prepared from Coconut Shell by Microwave Heating