Application of a magnetotactic bacterium, Stenotrophomonas sp. to the removal of Au(III) from contaminated wastewater with a magnetic separator

Song, Huiping; Li, Xingang; Sun, Jinsheng; Xu, Shen; Han, Xu

doi:10.1016/j.chemosphere.2008.02.064

Cited by 65 publications

(41 citation statements)

References 26 publications

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“…Scale bar 0.02 substitution/site Moisescu et al 2014). This is exemplified by their use to the removal of Au(III) from contaminated wastewater with a magnetic separator (Song et al 2008). In this respect, MTB can be undoubtedly useful for biotechnological purposes.…”

Section: Discussionmentioning

confidence: 98%

Analysis of a population of magnetotactic bacteria of the Gulf of Gabès, Tunisia

Pradel

Cayol

Fardeau

et al. 2015

Environ Sci Pollut Res

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The occurrence of magnetotactic bacteria (MTB) on a Tunisian marine coast exposed to heavy metals pollution (Sfax, Gulf of Gabès, Mediterranean Sea) was investigated. The MTB population of this Southern Mediterranean coast was compared to the MTB populations previously investigated on the French Northern Mediterranean coast. A dominant MTB coccus morphotype was observed by microscopy analysis. By pyrosequencing technology, the analysis of the 16S ribosomal RNA (rDNA) revealed as much as 33 operational taxonomic sequence units (OTUs) close to sequences of MTB accessible in the databases. The majority were close to MTB sequences of the "Med group" of α-Proteobacteria. Among them, a dominant OTU_001 (99 % of the MTB sequences) affiliated within the Magnetococcales order was highlighted. Investigating the capacities of this novel bacterium to be used in bioremediation and/or depollution processes could be envisaged.

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Section: Discussionmentioning

confidence: 98%

Analysis of a population of magnetotactic bacteria of the Gulf of Gabès, Tunisia

Pradel

Cayol

Fardeau

et al. 2015

Environ Sci Pollut Res

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“…was 506, 369 and 308 mg g À1 l À1 , dry weight biomass at the initial pH values of 2.0, 7.0 and 12.0, respectively. When thiourea was used as the desorbent to recover gold from the MTB biomass (Song et al, 2008b). Jiang et al (2007) achieved 100% Pb(II) removal via biosorption by MTB from the activated sludge.…”

Section: Wastewater Treatment and Heavy Metal Recoverymentioning

confidence: 99%

“…Further, time dependence studies showed that the adsorption equilibriums of Au(III) and Cu (II) were achieved within 5-10 min during biosorption of MTB (Song et al, 2007a(Song et al, ,b, 2006b. In an interesting study (Song et al, 2008b), maximum Au(III) biosorption capacity of MTB isolate Stenotrophomonas sp. was 506, 369 and 308 mg g À1 l À1 , dry weight biomass at the initial pH values of 2.0, 7.0 and 12.0, respectively.…”

Section: Wastewater Treatment and Heavy Metal Recoverymentioning

confidence: 99%

Magnetotactic bacteria: nanodrivers of the future

Mathuriya

2015

Critical Reviews in Biotechnology

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Magnetotactic bacteria (MTB) represent a heterogeneous group of Gram-negative aquatic prokaryotes with a broad range of morphological types, including vibrioid, coccoid, rod and spirillum. MTBs possess the virtuosity to passively align and actively swim along the magnetic field. Magnetosomes are the trademark nano-ranged intracellular structures of MTB, which comprise magnetic iron-bearing inorganic crystals enveloped by an organic membrane, and are dedicated organelles for their magnetotactic lifestyle. Magnetosomes endue high and even dispersion in aqueous solutions compared with artificial magnetites, claiming them as paragon nanomaterials. MTB and magnetosomes offer high technological potential in modern science, technology and medicines. This review focuses on the applicability of MTB and magnetosomes in various areas of modern benefits.

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“…Among the micro-organisms used, magnetotactic bacteria (MTB) have proven to be efficient biosorbents [3,4]. These bacteria contain a magnetosome consisting primarily of Fe 3 O 4 or Fe 3 S 4 arranged in chains [5], which enables many applications [6][7][8] such as fixed enzyme carriers, targeted nanomedicine carriers, magnetic recorders, and recycling agents for removal of metal from wastewater.…”

Section: Introductionmentioning

confidence: 99%

“…These bacteria contain a magnetosome consisting primarily of Fe 3 O 4 or Fe 3 S 4 arranged in chains [5], which enables many applications [6][7][8] such as fixed enzyme carriers, targeted nanomedicine carriers, magnetic recorders, and recycling agents for removal of metal from wastewater. MTB [3] possess unique magnetotactic properties and ideal adsorption of metal ions. With the aid of a high-gradient magnetic field [9], metal-loaded MTB can be rapidly removed from wastewater, which bypasses the problem of separating the adsorbed metal ions from the solution through other biosorption processes.…”

Section: Introductionmentioning

confidence: 99%

Investigation of bio-removing metal ions from wastewater―a viewpoint of micro forces

Cheng

Song

2015

Desalination and Water Treatment

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A B S T R A C TBiosorption is one of the effective methods to treat the wastewater containing heavy metal ions, especially the biosorption using magnetotactic biosorbents (MTB). The interaction between metal ions and MTB was investigated using molecular dynamics simulations. A model of a bacterial cell consisting of functional groups and Fe 3 O 4 was created. The principal functional groups on the MTB surface included -COOH, -PO 3 H 2 , and -OH, and physical adsorption was deduced as the primary adsorption mechanism. Free energy profiles for ions approaching the bacterial cell were computed using the adaptive biasing force method. The adsorption of ions occurred at a distance of 5 Å from the MTB surficial groups. Repulsive force had to be overcome when ions approached the functional groups in the simulation. The electrostatic attraction between ions and the adsorbent promotes adsorption, while the van der Waals force hinders adsorption. The -PO 3 H 2 and -COOH groups were found to contribute to the adsorption selectivity in the binary aqueous solutions.

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Application of a magnetotactic bacterium, Stenotrophomonas sp. to the removal of Au(III) from contaminated wastewater with a magnetic separator

Cited by 65 publications

References 26 publications

Analysis of a population of magnetotactic bacteria of the Gulf of Gabès, Tunisia

Analysis of a population of magnetotactic bacteria of the Gulf of Gabès, Tunisia

Magnetotactic bacteria: nanodrivers of the future

Investigation of bio-removing metal ions from wastewater―a viewpoint of micro forces

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