Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.1/6737
Título: Mechanism of uranium (VI) removal by two anaerobic bacterial communities
Autor: Martins, Mónica
Faleiro, Leonor
Rosa da Costa, Ana
Chaves, Sandra
Tenreiro, Rogério
Matos, António Pedro
Costa, Maria Clara
Palavras-chave: Bioremediation
Uranium (VI)
Bio-removal mechanism
Bacterial consortia
Data: Dez-2010
Editora: Elsevier
Citação: Journal of Hazardous Materials 184 (2010) 89–96
Resumo: The mechanism of uranium (VI) removal by two anaerobic bacterial consortia, recovered from an uncontaminated site (consortium A) and other from an uranium mine (consortium U), was investigated. The highest efficiency of U (VI) removal by both consortia (97%) occurred at room temperature and at pH 7.2. Furthermore, it was found that U (VI) removal by consortium A occurred by enzymatic reduction and bioaccumulation, while the enzymatic process was the only mechanism involved in metal removal by consortium U. FTIR analysis suggested that after U (VI) reduction, U (IV) could be bound to carboxyl, phosphate and amide groups of bacterial cells. Phylogenetic analysis of 16S rRNA showed that community A was mainly composed by bacteria closely related to Sporotalea genus and Rhodocyclaceae family, while community U was mainly composed by bacteria related to Clostridium genus and Rhodocyclaceae family.
Peer review: yes
URI: http://hdl.handle.net/10400.1/6737
DOI: 10.1016/j.jhazmat.2010.08.009
ISSN: 0304-3894
Versão do Editor: http://ac.els-cdn.com/S0304389410010253/1-s2.0-S0304389410010253-main.pdf?_tid=d6a6e5d0-532d-11e5-8c59-00000aab0f26&acdnat=1441389384_da1c5f4099a2d286915487a97a78f1e9
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