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Clean Technologies and Environmental Policy

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01-01-2015 | Original Paper

Removal of trace Cd(II) from water with the manganese oxides/ACF composite electrode

Authors: Yaping Chen, Liang Peng, Qingru Zeng, Yang Yang, Ming Lei, Huijuan Song, Liyuan Chai, Jidong Gu

Published in: Clean Technologies and Environmental Policy | Issue 1/2015

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Abstract

The Manganese oxide/active carbon fiber (MO/ACF) was prepared and its electrosorptive properties of Cd(II) in aqueous solution were investigated. The structure of MO/ACF was characterized with transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. Furthermore, the Cd(II) electrosorptive properties of MO/ACF electrodes with different bias potentials, ionic strengths, and loaded amount of manganese oxides were measured and the electrosorption isotherm and kinetics were investigated. The Cd(II) electrosorptive capacity of MO/ACF was 6 times higher than that of pure ACF. The optimal adsorptive bias voltage was 1.5 V and the optimal electrolyte concentration of NaCl was 0.1 mol/L. The adsorption isotherm was agreed well with the Freundlich adsorption model and its maximum electrosorption capacity was 14.88 mg/g by Langmuir model. The higher adsorptive capacity of MO/ACF than that of pure ACF is attributed to higher capacitance and more adsorptive sites of MO/ACF.

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Title: Removal of trace Cd(II) from water with the manganese oxides/ACF composite electrode
Authors: Yaping Chen
Liang Peng
Qingru Zeng
Yang Yang
Ming Lei
Huijuan Song
Liyuan Chai
Jidong Gu
Publication date: 01-01-2015
Publisher: Springer Berlin Heidelberg
Published in: Clean Technologies and Environmental Policy / Issue 1/2015
Print ISSN: 1618-954X
Electronic ISSN: 1618-9558
DOI: https://doi.org/10.1007/s10098-014-0756-1

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