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

被引：43
作者：
Martins, Monica [1 ]
Faleiro, Maria Leonor [2 ]
Rosa da Costa, Ana M. [3 ]
Chaves, Sandra [4 ]
Tenreiro, Rogerio [4 ]
Matos, Antonio Pedro [5 ]
Costa, Maria Clara [1 ]
机构：
[1] Univ Algarve, Ctr Ciencias Mar, P-8005139 Faro, Portugal
[2] Univ Algarve, FCT, IBB Ctr Biomed Mol & Estrutural, P-8005139 Faro, Portugal
[3] Univ Algarve, FCT, Ctr Invest Quim Algarve, DQF, P-8005139 Faro, Portugal
[4] Univ Lisbon, Fac Ciencias, Ctr Biodiversidade Genom Integrat & Func BioFIG, P-1749016 Lisbon, Portugal
[5] Hosp Curry Cabral, Serv Anat Patol, Lisbon, Portugal
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 184卷 / 1-3期
关键词：
Bioremediation; Uranium (VI); Bio-removal mechanism; Bacterial consortia; SULFATE-REDUCING BACTERIA; REDUCTION; MINE; BIOSORPTION; RECOVERY; OXIDES;
D O I：
10.1016/j.jhazmat.2010.08.009
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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. (c) 2010 Elsevier B.V. All rights reserved.
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收藏
页码：89 / 96
页数：8
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