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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
Deposited On:01 Jul 2009 18:26

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