Removal of Arsenic from Aqueous Solution by Aeromonas hydrophila

Laura Castro; M. Luisa Blázquez; Felisa González; Jesús Angel Muñoz; Antonio Ballester

doi:10.4028/www.scientific.net/SSP.262.647

Paper Titles

Utilization of Fe-Oxide Composites for as Removal from Aqueous Solutions
p.630

Intensification of Arsenic and Zinc Mobilization by Combination of Bio-Chemical Leaching with EDTA in the Soil and Sediment Bioremediation
p.634

Comparative Analysis of the Sulfate-Reducing Performance and Microbial Colonisation of Three Continuous Reactor Configurations with Varying Degrees of Biomass Retention
p.638

Investigation of the Ga Complexation Behaviour of the Siderophore Desferrioxamine B
p.643

Removal of Arsenic from Aqueous Solution by Aeromonas hydrophila
p.647

In Situ Bioremediation of Tailings by Sulfate Reducing Bacteria and Iron Reducing Bacteria: Lab- and Field-Scale Remediation of Sulfidic Mine Tailings
p.651

Immobilization of Arsenic by a Thermoacidophilic Mixed Culture with Pyrite as Energy Source
p.656

Genomic Characterization of the Arsenic-Tolerant Actinobacterium, Rhodococcus erythropolis S43
p.660

Microbiological As(III) Oxidation and Immobilization as Scorodite at Moderate Temperatures
p.664

HomeSolid State PhenomenaSolid State Phenomena Vol. 262Removal of Arsenic from Aqueous Solution by...

Removal of Arsenic from Aqueous Solution by Aeromonas hydrophila

Abstract:

Arsenic contamination is considered as a global environmental problem. This metalloid is known to be carcinogenic in some forms, and is mostly found in the environment as arsenate As (V) and arsenite As (III). Several chemical methods have been established for decontamination of arsenic from ground water including biological treatments. In the present work, the effect of the anaerobic bioreduction of soluble Fe (III) by the strain Aeromonas hydrophila on arsenic immobilization has been investigated. The tolerance of this strain to arsenic concentration and the effect of the iron concentration in arsenic immobilization have been studied. The release of ferrous ion indicated the bioreduction of iron and promoted the subsequent arsenic co-precipitation, leading to the formation of various iron-bearing minerals. This precipitate has been observed and identified by Scanning Electron Microscopy and X-ray diffraction analysis as Fe₃(AsO₄)₂(H₂O)₈.

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Periodical:

Solid State Phenomena (Volume 262)

Pages:

647-650

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.262.647

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Online since:

August 2017

Authors:

Laura Castro, M. Luisa Blázquez, Felisa González, Jesús Angel Muñoz, Antonio Ballester*

Keywords:

Aeromonas hydrophila, Arsenic, Bioremediation, Biovolatilization

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