Chelating Agent EDDS in Removal of Copper (II) with Three Adsorption Materials

Abstract:

Recently, chelating agents have been widely applied to remove heavy metals for their highly effective capacities. In this study, three kinds of adsorption materials, 719 strongly basic anion exchange resin, γ-Al2O3 and activated carbon, were investigated to remove copper(II) under the existence of chelating agent EDDS. Adsorption isotherm and kinetics of copper(II) were assessed in batch experimental systems, pH and initial concentrations were also conducted to evaluate the effects on copper(II) removal. Results indicated the adsorption capacity with three absorbents was enhanced from 0.62, 7.26, 6.73 mg/g to 17.21, 24.68, 24.90 mg/g respectively when the chelating agent EDDS existing in aquatic phase. The experimental isotherms are fitted to Langmuir and Freundlich models, results show that 719 strongly basic anion exchange resin and γ-Al2O3 have good correlation coefficients obtained from Langmuir model, and activated carbon is better to fit the Freundlich model.

• Periodical: Advanced Materials Research (Volume 663)
• Pages: 1005-1010
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.663.1005
• Online since: February 2013
• Authors: Jian Zhong Zhu, Sheng Lu Chen, Rui Rui Zhu, Guan Huan Chen, Yang Cao
• Keywords: Adsorption Materials, Adsorption Model, Copper(II), EDDS

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