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Evaluation of laboratory and industrial meat and bone meal combustion residue as cadmium immobilizing material for remediation of polluted aqueous solutions: “Chemical and ecotoxicological studies”

Bernues Savaete, L. and Coutand, Marie and Clastres, Pierre and Cyr, Martin and Cren, S. and Deydier, Eric and Gauthier, Laury and Guilet , Richard and Mouchet, Florence Evaluation of laboratory and industrial meat and bone meal combustion residue as cadmium immobilizing material for remediation of polluted aqueous solutions: “Chemical and ecotoxicological studies”. (2009) Journal of Hazardous Materials, Vol.16 (n°2-3). 945-953 . ISSN 0304-3894

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Official URL: http://dx.doi.org/10.1016/j.jhazmat.2008.11.104

Abstract

Meat and Bone Meals (MBM) combustion residues (ashes) are calcium and phosphate-rich materials. The aim of this work is to evaluate ashes efficiency for remediation of cadmium-contaminated aqueous solutions, and to assess the bioavailability of cadmium on Xenopus laevis larvae. In this study both industrial (MBM-BA) and laboratory (MBM-LA) ashes are compared regarding their efficiency. Kinetic investigations reveal that cadmium ions are quickly immobilized, with a maximum cadmium uptake at 57 mg Cd2+/g of ashes for MBM-LA, two times higher than metal uptake quantity of MBM-BA, in our experimental conditions. Chemical and X-ray diffraction analysis (XRD) reveal that Cd2+ is mainly immobilized as Ca10 − xCdx(PO4)6(OH)2 by both ashes, whereas otavite, Cd(CO3), is also involved for MBM-LA in cadmium uptake. Otavite formation could be explained by the presence of carbonates in MBM-LA, as observed by IR. Genotoxicity of cadmium solution on Xenopus larvae is observed at 0.02, 0.2 and 2 mg Cd2+/L. However addition of only 0.1 g/L MBM-LA inhibits these effects for the above concentration values whereas Cd2+ bioaccumulation in larvae's liver is similar for both experiments, with and without ashes. Meat and bone meal; Incineration; Cadmium; Toxicity; Xenopus larvae

Item Type:Article
Additional Information:You can find this article in http://www.sciencedirect.com/science?_ob=ArticleListURL&_method=list&_ArticleListID=945408821&_sort=r&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=dc864251c0385b94af6f38fe7f86b52a
Audience (journal):International peer-reviewed journal
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Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Guylène Abadie

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