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Int. J. Environ. Res. Public Health 2013, 10(11), 5830-5843; doi:10.3390/ijerph10115830

Assessing the Mobility of Lead, Copper and Cadmium in a Calcareous Soil of Port-au-Prince, Haiti

Université Quisqueya—LAQUE, 218, Avenue Jean Paul II, Haut de Turgeau, P.O. Box 796, Port-au-Prince, HT 6113, Haiti
Université de Lyon—LEHNA, UMR 5023, ENTPE, Rue Maurice Audin, Vaulx-en-Velin CEDEX FR 69518, France
Based on Fifi, U.; Winiarski, T.; Emmanuel, E. Groundwater Vulnerability towards Pollutants from Urban Stormwater in Developing Countries—Study of Heavy Metals Adsorption on a Representative Soil of Port-au-Prince, Haiti. In Proceedings of Novatech 2010, Lyon, France, 27 June–1 July 2010 (in French).
Author to whom correspondence should be addressed.
Received: 12 August 2013 / Revised: 28 October 2013 / Accepted: 28 October 2013 / Published: 4 November 2013
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The presence of heavy metals in the environment constitutes a potential source of both soil and groundwater pollution. This study has focused on the reactivity of lead (Pb), copper (Cu) and Cadmium (Cd) during their transfer in a calcareous soil of Port-au-Prince (Haiti). Kinetic, monometal and competitive batch tests were carried out at pH 6.0. Two simplified models including pseudo-first-order and pseudo-second-order were used to fit the experimental data from kinetics adsorption batch tests. A good fit of these data was found with pseudo-second-order kinetic model which indicates the applicability of this model to describe the adsorption rates of these metals on the soil. Monometal batch tests indicated that both Langmuir and Freundlich models allowed a good fit for experimental data. On the basis of the maximum adsorption capacity (qmax), the order affinity of Pb, Cu and Cd for the studied soil was Pb2+ > Cu2+ > Cd2+. Competitive sorption has proved that the competition between two or several cations on soils for the same active sites can decrease their qmax. These results show that, at high metal concentrations, Cd may pose more threat in soils and groundwater of Port-au-Prince than Pb and Cu. View Full-Text
Keywords: lead; copper; cadmium; models; soils; sorption lead; copper; cadmium; models; soils; sorption

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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Fifi, U.; Winiarski, T.; Emmanuel, E. Assessing the Mobility of Lead, Copper and Cadmium in a Calcareous Soil of Port-au-Prince, Haiti. Int. J. Environ. Res. Public Health 2013, 10, 5830-5843.

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