Mechanism of uranium (VI) removal by two anaerobic bacterial communities

Mónica Martins; Maria Leonor Faleiro; Ana M.Rosa da Costa; Sandra Chaves; Rogério Tenreiro; António Pedro Matos; Maria Clara Costa

doi:10.1016/j.jhazmat.2010.08.009

Mechanism of uranium (VI) removal by two anaerobic bacterial communities

Mónica Martins
, Maria Leonor Faleiro
, Ana M.Rosa da Costa
, Sandra Chaves
, Rogério Tenreiro
, António Pedro Matos
, Maria Clara Costa

Research output: Contribution to journal › Article › peer-review

57 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	89-96
Number of pages	8
Journal	Journal of Hazardous Materials
Volume	184
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jhazmat.2010.08.009
Publication status	Published - 2010
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 15 Life on Land

Keywords

Bacterial consortia
Bio-removal mechanism
Bioremediation
Uranium (VI)

Access to Document

10.1016/j.jhazmat.2010.08.009

Cite this

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title = "Mechanism of uranium (VI) removal by two anaerobic bacterial communities",

abstract = "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.",

keywords = "Bacterial consortia, Bio-removal mechanism, Bioremediation, Uranium (VI)",

author = "M{\'o}nica Martins and Faleiro, \{Maria Leonor\} and \{da Costa\}, \{Ana M.Rosa\} and Sandra Chaves and Rog{\'e}rio Tenreiro and Matos, \{Ant{\'o}nio Pedro\} and Costa, \{Maria Clara\}",

note = "Funding Information: Funding by Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia through a PhD grant ( SFRH/BD/29677/2006 ) is acknowledged. Authors are grateful to J{\'u}lio C{\'e}sar Hern{\'a}ndez from Universidad de Huelva, Faculdad de Ciencias Experimentales, Spain, for the XRD analysis.",

year = "2010",

doi = "10.1016/j.jhazmat.2010.08.009",

language = "English",

volume = "184",

pages = "89--96",

journal = "Journal of Hazardous Materials",

issn = "0304-3894",

publisher = "Elsevier B.V.",

number = "1-3",

}

TY - JOUR

T1 - Mechanism of uranium (VI) removal by two anaerobic bacterial communities

AU - Martins, Mónica

AU - Faleiro, Maria Leonor

AU - da Costa, Ana M.Rosa

AU - Chaves, Sandra

AU - Tenreiro, Rogério

AU - Matos, António Pedro

AU - Costa, Maria Clara

N1 - Funding Information: Funding by Fundação para a Ciência e a Tecnologia through a PhD grant ( SFRH/BD/29677/2006 ) is acknowledged. Authors are grateful to Júlio César Hernández from Universidad de Huelva, Faculdad de Ciencias Experimentales, Spain, for the XRD analysis.

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

KW - Bacterial consortia

KW - Bio-removal mechanism

KW - Bioremediation

KW - Uranium (VI)

UR - https://www.scopus.com/pages/publications/77957858726

U2 - 10.1016/j.jhazmat.2010.08.009

DO - 10.1016/j.jhazmat.2010.08.009

M3 - Article

C2 - 20832165

AN - SCOPUS:77957858726

SN - 0304-3894

VL - 184

SP - 89

EP - 96

JO - Journal of Hazardous Materials

JF - Journal of Hazardous Materials

IS - 1-3

ER -

Mechanism of uranium (VI) removal by two anaerobic bacterial communities

Abstract

UN SDGs

Keywords

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