Arsenic resistance and removal by marine and non-marine bacteria

Takeuchi, Mio; Kawahata, Hodaka; Gupta, Lallan P.; Kita, N. T.; Morishita, Y.; Ono, Yoshihiro; Komai, Takeshi

doi:10.1016/j.jbiotec.2006.07.018

Cited by 105 publications

(55 citation statements)

References 27 publications

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“…There are numerous additional examples such as the ability to withstand high arsenic concentrations described for several aquatic bacterial strains by Takeuchi et al (2007). This ability may be due to the activity of members of the cation diffusion facilitators (CDFs) family, which favors the efflux of divalent cations, thus preserving metal homeostasis (Zeytuni et al 2014), or to one or more of the several, sometimes overlapping, metal resistance systems summarized by Nies (2003) and more recently by Marrero-Coto et al (2010).…”

Section: Discussionmentioning

confidence: 99%

REMOVAL OF CADMIUM AND LEAD BY ADAPTED STRAINS OF Pseudomonas aeruginosa AND Enterobacter cloacae

Bojórquez

Frías-Espericueta

Voltolina

2016

Rev. Int. Contam. Ambie.

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This study determined the cadmium and lead (Cd and Pb) biosorption of two bacterial strains identified with molecular techniques as Pseudomonas aeruginosa and Enterobacter cloacae. These species were isolated from domestic wastewater and adapted to a maximum of 2.83 and 17.4 mg/L of Cd and Pb, respectively. Cd sorption by both strains, determined by atomic absorption spectrophotometry, ranged from 14.4 to 16.5 %. However, the difference between strains was not significant. P. aeruginosa and E. cloacae were comparatively more efficient in the sorption of Pb (82.47and 72.16 % respectively) than for Cd. The amount of Pb absorbed by the bacterial biomass was significantly higher in P. aeruginosa than in E. cloacae cultures.Palabras clave: metales pesados, cepas bacterianas, adaptación, remoción de metales RESUMEN El presente estudio evaluó la capacidad de absorción y adsorción de cadmio y plomo (Cd y Pb) de Psudomonas aeruginosa y Enterobacter cloacae, identificadas mediante técnicas moleculares. Estas dos cepas fueron aisladas de efluentes residuales domésticos y adaptadas hasta concentraciones de 2.83 mg/L de cadmio y 17.4 mg/L de plomo. Para determinar la capacidad de remoción de Cd y Pb en estas especies, se realizaron cultivos de 24 h y se cuantificó la cantidad de metal adsorbido y absorbido en la biomasa celular mediante espectrofotometría de absorción atómica. Los resultados muestran que en ambas cepas el porcentaje de adsorción y absorción de Cd se encontró entre el 14.4 y 16.5 % de la concentración inicial, sin diferencias entre cepas. En el caso del Pb ambas cepas son eficientes, ya que los porcentajes retenidos por los dos procesos tanto en P. aeruginosa como en E. cloacae suman el 82.47 y 72.16 % de la concentración inicial, respectivamente. La absorción en la biomasa bacteriana resultó significativamente mayor en los cultivos de P. aeruginosa.

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Section: Discussionmentioning

confidence: 99%

REMOVAL OF CADMIUM AND LEAD BY ADAPTED STRAINS OF Pseudomonas aeruginosa AND Enterobacter cloacae

Bojórquez

Frías-Espericueta

Voltolina

2016

Rev. Int. Contam. Ambie.

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“…Bacteria have been utilised in the clean-up of oil spills [64][65][66][67], PCBs [68] and heavy metals, such as arsenic, mercury, cadmium and lead [69,70]. There are sufficient examples to suggest there are few if any substances that cannot be utilised at least in part by microbes for metabolic activities [63].…”

Section: Biodegradationmentioning

confidence: 99%

“…There are sufficient examples to suggest there are few if any substances that cannot be utilised at least in part by microbes for metabolic activities [63]. Biodegradation is an attractive alternative to current practices for waste disposal, as it is generally a cheaper process, potentially much more efficient and does not produce secondary pollutants, such as those associated with incineration and landfill [63,64,68,70,71]. In some cases, it may even be possible to obtain useful end products with economic benefit from bacterial metabolism of pollutants, for example, ethanol for use in biofuels [63].…”

Section: Biodegradationmentioning

confidence: 99%

Plastic Degradation and Its Environmental Implications with Special Reference to Poly(ethylene terephthalate)

et al. 2012

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Abstract:With increasing global consumption and their natural resistance to degradation, plastic materials and their accumulation in the environment is of increasing concern. This review aims to present a general overview of the current state of knowledge in areas that relate to biodegradation of polymers, especially poly(ethylene terephthalate) (PET). This includes an outline of the problems associated with plastic pollution in the marine environment, a description of the properties, commercial manufacturing and degradability of PET, an overview of the potential for biodegradation of conventional polymers and biodegradable polymers already in production.

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“…Among known arsenic-removing bacteria, the marine bacterium Marinomonas communis is capable of removing 2.290 mg As/g dw from cultures containing initial As(V) concentrations of 5.0 mg/L, which is the largest quantity reported to date 14 . However, the ratio of arsenic removed was only 14.8% under the experimental conditions, and was even lower in medium containing only 0.07 mg As/L of As(V).…”

Section: Removal Of Arsenic From Aqueous Solution Using Dried Cellsmentioning

confidence: 99%

Characteristics of Arsenic-methylation and Arsenic-removal by <i>Bordetella petrii</i> Strain KC42

Miyatake

Hayashi

2016

Resources Processing

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Bordetella petrii strain KC42 isolated from soil in Miyazaki prefecture was shown to be a microorganism with methylation and removal activities of inorganic arsenic. Arsenic methylation using intracellular extracts from strain KC42 at pH 6.5 and 35°C for 2 h yielded 35.9% methylated organic arsenic compound and 10.8% trimethylarsenic compound (TMAC). As a result of the analysis of TMAC produced under these conditions, TMAC was identified by trimethylarsine oxide and arsenobetaine. In experiments of arsenic adsorption by dried cells of strain KC42, the ratio of As(III) adsorption by strain KC42 was 99.4% in solutions containing 0.2 mg As/L at pH 7.0 and 30°C for 2 h. The maximum adsorption value was 0.179 mg As/g dw at an initial concentration of 10.0 mg As/L As(III). These results suggest that strain KC42 may be utilized for bioremediation

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Arsenic resistance and removal by marine and non-marine bacteria

Cited by 105 publications

References 27 publications

REMOVAL OF CADMIUM AND LEAD BY ADAPTED STRAINS OF Pseudomonas aeruginosa AND Enterobacter cloacae

REMOVAL OF CADMIUM AND LEAD BY ADAPTED STRAINS OF Pseudomonas aeruginosa AND Enterobacter cloacae

Plastic Degradation and Its Environmental Implications with Special Reference to Poly(ethylene terephthalate)

Characteristics of Arsenic-methylation and Arsenic-removal by <i>Bordetella petrii</i> Strain KC42

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