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Batch Chromium(VI), Cadmium(II) and Lead(II) Removal from Aqueous Solutions by Horticultural Peat

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Abstract

The selectivity and uptake capacity of horticultural peat available in Romania was evaluated with respect to the removal of Cd(II), Cr(VI) and Pb(II) ions from aqueous solution. The kinetics, sorption capacities, selectivity and pH dependence of sorption were determined. The influence of metal concentration in solution is discussed in the terms of Langmuir and Freundlich isotherm and constants. Sorption capacities increased with increasing metal concentration in solution. For solutions containing 300 mg/l of metal, the observed uptake capacities were 20 mg Cd(II)/g peat, 15 mg Cr(VI)/g peat and 30 mg Pb(II)/g peat. The study proved that horticultural peat is a suitable material for the removal of the studied heavy metal ions from aqueous solutions, achieving removal efficiencies higher than 90%, and could be considered as a potential material for treating effluent polluted with Cd(II), Cr(VI) and Pb(II) ions.

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Authors and Affiliations

  1. National R&D Institute for Non-Ferrous and Rare Metals, IMNR, Bd. Biruintei 102, 077145, Pantelimon, Romania

    Mihaela Ulmanu & Ildiko Anger

  2. Department of Chemical Engineering and Environmental Technology, Higher Polytechnic School of Engineering, University of Oviedo, 33203, Gijón, Spain

    Yolanda Fernández, Leonor Castrillón & Elena Marañón

Authors
  1. Mihaela Ulmanu
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  2. Ildiko Anger
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  3. Yolanda Fernández
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  4. Leonor Castrillón
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  5. Elena Marañón
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Correspondence to Elena Marañón.

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Ulmanu, M., Anger, I., Fernández, Y. et al. Batch Chromium(VI), Cadmium(II) and Lead(II) Removal from Aqueous Solutions by Horticultural Peat. Water Air Soil Pollut 194, 209–216 (2008). https://doi.org/10.1007/s11270-008-9709-9

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  • DOI: https://doi.org/10.1007/s11270-008-9709-9

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