A new bacterial strain mediating As oxidation in the Fe-rich biofilm naturally growing in a groundwater Fe treatment pilot unit

Casiot, Corinne; Pedron, V.; Bruneel, Odile; Duran, Robert; Personné, Jean-Christian; Grapin, G.; Drakides, Christian; Elbaz-Poulichet, Françoise

doi:10.1016/j.chemosphere.2005.11.072

Cited by 24 publications

(13 citation statements)

References 22 publications

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“…They believed that As(III) was partially oxidized to As(V) by the microorganisms. A recent study found a new bacterial strain, B2, which is dominant in Fe-rich groundwater, responsible for oxidizing As(III) to As(V), possibly enhancing the arsenic removal process (Casiot et al, 2006). Additional supporting results were also published on biological removal of arsenic Katsoyiannis and Zouboulis, 2006a,b).…”

Section: Introductionmentioning

confidence: 80%

Biological filtration for removal of arsenic from drinking water

Pokhrel

Viraraghavan

2009

Journal of Environmental Management

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Section: Introductionmentioning

confidence: 80%

Biological filtration for removal of arsenic from drinking water

Pokhrel

Viraraghavan

2009

Journal of Environmental Management

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“…It is known that high concentration of As in groundwater is often associated with high concentrations of Fe and Mn, thus the simultaneous removal of As, Fe and Mn by biological filtration is applicable. A number of studies using biological filtration for the simultaneous removal of As and Fe (Katsoyiannis and Zouboulis, 2004;Casiot et al, 2006;Hassan et al, 2009;Pokhrel and Viraraghavan, 2009), or the simultaneous removal of As, Fe and Mn (Katsoyiannis and Zouboulis, 2006;Sugahara et al, 2008) exhibited effective removal of As from the water. However, composition and function of the microbial community in the biological filtration systems had not been studied in detail.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, they studied the diversity of the bacterial consortia in the BFR using polymerase chain reaction (PCR)-based 16S ribosomal RNA (rRNA) gene sequence analysis, and showed the presence of 9 individual operational taxonomic units (OTUs) including the bacteria phylogenetically related to Gallionella. Casiot et al (2006) operated the biological filtration system using Fe and As-containing groundwater, and isolated an As-oxidizing bacterium from the BFR. In addition, they analyzed the diversity of the bacterial consortia in the biofilm from the BFR by PCR-based terminal-restriction fragment length polymorphism (T-RFLP) of the 16S rRNA genes, and showed the presence of 14 OTUs.…”

Section: Introductionmentioning

confidence: 99%

Bacterial Diversity in Biological Filtration System for the Simultaneous Removal of Arsenic, Iron and Manganese from Groundwater

Chhetri

Suzuki

Fujita

et al. 2014

J. of Wat. ^|^ Envir. Tech.

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Bacterial diversity of the microbial consortia in a biological filtration pilot plant for the simultaneous removal of arsenic (As), iron (Fe) and manganese (Mn) from groundwater was analyzed. PCR-based denaturing gradient gel electrophoresis (DGGE) of bacterial 16S ribosomal RNA (rRNA) genes represented at least 6 dominant signals and many weak signals. Phylogenetic analysis using the nucleotide sequences of the 16S rRNA gene clone library constructed from the pilot plant sample showed the presence of the bacteria closely related to Gallionella and Leptothrix, which are supposed to be involved in the production of Fe and Mn oxides utilized for adsorbents of As in this system. On the other hand, aoxB gene was not detected, suggesting that arsenite-oxidizing bacterium would not be involved in the As removal of the pilot plant. These results indicated that the simultaneous removal of As, Fe and Mn from groundwater was conducted by the physicochemical sorption of As by the biogenic Fe and Mn oxides produced by the bacteria closely related to Gallionella and Leptothrix included in the microbial consortia of the pilot plant.

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“…Proposed mechanisms include oxidation of arsenicrich pyrite (Das et al, 1996;Acharyya et al, 1999), reductive dissolution of arsenic-rich Fe(III) oxyhydroxides (Nickson et al, 1998(Nickson et al, , 2000Harvey et al, 2002;Smedley and Kinniburgh, 2002), desorption from ferric oxyhydroxides (Smedley and Kinniburgh, 2002), and mobilization either by phosphate generated from the intensive use of fertilizers (Acharyya et al, 1999) or by carbonate produced via microbial metabolism (Appelo et al, 2002;Harvey et al, 2002). In recent years, more and more evidence indicated the important role of microbes in mobilizing arsenic in aquifer systems (Turpeinen et al, 1999;Islam et al, 2004;Casiot et al, 2006;Park et al, 2006), and biogeochemical behaviors of arsenic have become a hot topic for geochemical and geomicrobiological studies. Several laboratory-based studies have been performed with nonsterile or sterile minerals and subsurface materials, while few were conducted with pure bacterial cultures to understand these dynamics .…”

Section: Introductionmentioning

confidence: 99%

Arsenic release by indigenous bacteria Bacillus cereus from aquifer sediments at Datong Basin, northern China

et al. 2010

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Endemic arsenic poisoning due to long-term drinking of high arsenic groundwater has been reported in Datong Basin, northern China. To investigate the effects of microbial activities on arsenic mobilization in contaminated aquifers, Bacillus cereus (B. cereus) isolated from high arsenic aquifer sediments of the basin was used in our microcosm experiments. The arsenic concentration in the treatment with both bacteria and sodium citrate or glucose had a rapid increase in the first 18 d, and then, it declined. Supplemented with bacteria only, the concentration could increase on the second day. By contrast, the arsenic concentration in the treatment supplemented with sodium citrate or glucose was kept very low. These results indicate that bacterial activities promoted the release of arsenic in the sediments. Bacterial activities also influenced other geochemical parameters of the aqueous phase, such as pH, Eh, and the concentrations of dissolved Fe, Mn, and Al that are important controls on arsenic release. The removal of Fe, Mn, and Al from sediment samples was observed with the presence of B. cereus. The effects of microbial activities on Fe, Mn, and Al release were nearly the same as those on As mobilization. The pH values of the treatments inoculated with bacteria were lower than those without bacteria, still at alkaline levels. With the decrease of Eh values in treatments inoculated with bacteria, the microcosms became more reducing and are thus favorable for arsenic release.

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A new bacterial strain mediating As oxidation in the Fe-rich biofilm naturally growing in a groundwater Fe treatment pilot unit

Cited by 24 publications

References 22 publications

Biological filtration for removal of arsenic from drinking water

Biological filtration for removal of arsenic from drinking water

Bacterial Diversity in Biological Filtration System for the Simultaneous Removal of Arsenic, Iron and Manganese from Groundwater

Arsenic release by indigenous bacteria Bacillus cereus from aquifer sediments at Datong Basin, northern China

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