Macroscopic and spectroscopic analysis of lanthanide adsorption to bacterial cells

Ngwenya, Bryne T.; Mosselmans, J. Frederick W.; Magennis, Marisa; Atkinson, Kirk D.; Tourney, Janette; Olive, Valérie; Ellam, Robert M.

doi:10.1016/j.gca.2009.03.018

Cited by 70 publications

(63 citation statements)

References 65 publications

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“…Using EXAFS measurement, Ngwenya et al (2009) inner-sphere complexation involving REEs was the most likely reaction that led to proton exchange.…”

Section: Selective Accumulation Of Rres Using Microorganismsmentioning

confidence: 99%

“…Gram-negative bacteria contain phosphate groups at N-acetylglucosamine phosphates, which are structural components of Lipid A in the outer membrane. Macroscopic analysis with X-ray absorption spectroscopic measurements and EXAFS suggested that the phosphate sites located on N-acetylglucosamine phosphate are the binding site of REEs (Ngwenya et al 2009). …”

Section: Selective Accumulation Of Rres Using Microorganismsmentioning

confidence: 99%

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Interactions of microorganisms with rare earth ions and their utilization for separation and environmental technology

Moriwaki

Yamamoto

2012

Appl Microbiol Biotechnol

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In recent years, rare earth elements (REEs) have been widely used in various modern technological devices, and the global demand for REE has been increasing. The increased demand for REEs has led to environmental exposure or water pollution from rare earth metal mines and various commercial products. Therefore, the development of a safe technology for the separation and adsorption of REEs is very important from the perspective of green chemistry and environmental pollution. In this review, the application and mechanisms of microorganisms for the removal and extraction of REEs from aqueous solutions are described.In addition, the advantages in using microorganisms for REE adsorption and future studies on this topic are discussed.

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“…Using EXAFS measurement, Ngwenya et al (2009) inner-sphere complexation involving REEs was the most likely reaction that led to proton exchange.…”

Section: Selective Accumulation Of Rres Using Microorganismsmentioning

confidence: 99%

Section: Selective Accumulation Of Rres Using Microorganismsmentioning

confidence: 99%

Interactions of microorganisms with rare earth ions and their utilization for separation and environmental technology

Moriwaki

Yamamoto

2012

Appl Microbiol Biotechnol

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“…More recently, Ngwenya et al (2009) has used XAS and EXAFS (Extended Xray Absorption Fine Structure) measurements to identify lanthanide sorption sites on the bacterial surface. For this purpose they studied the adsorption of selected representatives for light (La and Nd), middle (Sm and Gd) and heavy (Er and Yb) lanthanides.…”

Section: Biosorbent Characteristics and Metal Bindingmentioning

confidence: 99%

“…Furthermore, spectroscopic analysis suggested that the coordination to phosphate sites was monodentate at the metal/biomass ratios used. Based on the best-fitting pK a site, Ngwenya et al (2009) conclude that the phosphate sites are located on Nacetylglucosamine phosphate, the most likely polymer on gram-negative cells, with non-protonated phosphate sites around neutral pH. Guibal et al (1999) studied the recovery of Pt(IV) from dilute solutions by chitosan cross-linked with glutaraldehyde.…”

Section: Biosorbent Characteristics and Metal Bindingmentioning

confidence: 99%

Removal of Rare Earth Elements and Precious Metal Species by Biosorption

Andrès

Gérente

2011

Microbial Biosorption of Metals

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In Rare Earth Elements (REE) or Precious Metal Species (PMS) removal many types of biological phenomena can take place, such as biosorption, bioaccumulation, resistance/detoxification mechanisms, and direct or indirect utilization in the microbial metabolism. The high demand for the REE or PMS implies demand on increased production of ores containing REE or PMS (i.e. mining) and recycling of solutions to recover the elements contained in waste. But the use of REE and PMS in many anthropogenic applications and devices has led to an increased of public and environment exposure. The aim of this chapter is to compare under different operating conditions, the biosorption capacities of various microbial species and natural by-products for rare earth elements, to investigate the involved sorption mechanisms and to evaluate the potential industrial use of this process to metal ion removal.

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“…[3][4][5][6][7][8][9] Among the biotic components, some microorganisms have cells whose surfaces sorb a variety of radionuclides. [10][11][12][13][14][15][16][17][18][19] The high capacity of microbial surfaces to adsorb radionuclides may affect the migration of radionuclides in the environment. This adsorption occurs under a nonmetabolic passive condition.…”

Section: Introductionmentioning

confidence: 99%

Accumulation of Co in Yeast Cells under Metabolically Active Condition—Implication for Role of Yeast in Migration of Radioactive Co—

Kozai¹,

Ohnuki²,

Sakamoto³

et al. 2011

Journal of Nuclear Science and Technology

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The accumulation and change in the chemical states of Co have been studied to elucidate the role of the yeast Saccharomyces cerevisiae in the migration of radioactive cobalt in the environment. The yeast was grown in a solution containing Co(II) ions, a carbon source, and essential elements (metabolically active condition). For comparison, an adsorption experiment of Co(II) ions on the yeast cells under resting condition without essential elements was performed. Time courses of Co concentration in the solution, in the cells, and chemical states of the accumulated Co were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES), particle-induced X-ray emission (PIXE), and X-ray absorption fine structure (XAFS) analyses. The time courses of Co concentration in the solution showed that a higher amount of Co was accumulated by the yeast cells under the metabolically active condition than under the resting one. PIXE analyses showed the concurrent accumulation of Fe with Co accumulation under the metabolically active condition, suggesting the intracellular accumulation of Co. XAFS analyses showed that the k 3 -weighted extended-XAFS functions and the radial structural function of Co accumulated by the yeast cells under the metabolically active condition are similar to those under the resting condition, indicating that the chemical states of the accumulated Co were nearly the same between both conditions. These results indicate that the yeast performs better retardation of the migration of Co under the metabolically active condition than under the resting one.

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Macroscopic and spectroscopic analysis of lanthanide adsorption to bacterial cells

Cited by 70 publications

References 65 publications

Interactions of microorganisms with rare earth ions and their utilization for separation and environmental technology

Interactions of microorganisms with rare earth ions and their utilization for separation and environmental technology

Removal of Rare Earth Elements and Precious Metal Species by Biosorption

Accumulation of Co in Yeast Cells under Metabolically Active Condition—Implication for Role of Yeast in Migration of Radioactive Co—

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