Impact of bacterial activities on release and speciation of heavy metals in anaerobic contaminated sediments

摘要：

In this work, the impacts of autochtonous microorganisms on the dissolution and the speciation of heavy metals in anaerobic sediments were studied. Results obtained during the incubation of river sediments under anaerobic conditions indicated that metal solubilisation was correlated to microbial activity. In particular, Fe and Mn speciation confirmed a Fe and Mn reducing bacterias activity. By reducing Fe and Mn oxides, these microorganisms contributed to the dissolution of their associated heavy metals (Co, Cu, Ni) leading to changes in the speciation of these metals in the sediments. Furthermore, sulphate-reducing bacteria were responsible for sulphide formation, leading to the formation of iron sulphides.

关键词： anaerobic microorganisms heavy metals release metal speciation sediments

作者: C. Gounou G. Varrault J. M. Mouchel N. Bousserrhine

作者单位: Centre dEnseignement et de Recherche, Eau, Ville, Environnement (CEREVE), Faculte des Sciences, Uni UMR 7619 Sisypbe, Universite Pierre et Marie Curie, 75252 Paris Cedex 05, France Laboratoire de Biologie des Sols et des Eaux (LBSE, UMR 137 BIOSOL), Faculte des Sciences, Universit

会议类型: 国际会议

会议名称: 第九届痕量元素生物地球化学国际会议(9th International Conference on the Biogeochemistry of Trace Elements)

会议地点: 北京

会议语种:英文

页码: 772-773

在线出版日期: 2007-07-15（万方平台首次上网日期，不代表论文的发表时间）