Abstract
We studied the removal of copper and zinc ions from aqueous solutions using a lignocellulosic substrate obtained by an acido-basic treatment of wheat bran. The sorption capacity of this material was investigated through batch and column experiments. Batch experimental results showed that the retention capacity of the lignocellulosic substrate was 0.20×10−3 mol g−1 at pH 4.5 for copper(II) and 0.24×10−3 mol g−1 at pH 6.5 for zinc(II). Column experiments showed a reduced sorption capacity for both ions compared to batch experiments. Batch and column data were analysed using the Langmuir equation in order to determine the affinity constant and the binding capacity of the sorbent and to compare both retention processes.
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Acknowledgements
We are grateful to the Région Champagne-Ardenne and the Département de la Marne for their financial support and for a grant to Jamila Bouanda and to the society ARD for giving the materials for column experiments.
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Dupont, L., Bouanda, J., Dumonceau, J. et al. Biosorption of Cu(II) and Zn(II) onto a lignocellulosic substrate extracted from wheat bran. Environ Chem Lett 2, 165–168 (2005). https://doi.org/10.1007/s10311-004-0095-2
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DOI: https://doi.org/10.1007/s10311-004-0095-2