Bioaccumulation of palladium by <i>Desulfovibrio desulfuricans</i>

Yong, Ping; Rowson, Neil A.; Farr, J.P.G.; Harris, I.R.; Macaskie, Lynne E.

doi:10.1002/jctb.606

Cited by 119 publications

(106 citation statements)

References 24 publications

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“…2 supplemented with 0.4% (w/v) sodium fumarate and 0.5% (v/v) glycerol. Desulfovibrio desulfuricans NCIMB 8307 was cultured anaerobically in Postgate C medium at 30 o C (Yong et al 2002;.…”

Section: Methodsmentioning

confidence: 99%

“…The suspension was left for 2 h to allow biosorption of metal (much of the hydrogenase activity was retained for this duration: I. Mikheenko, unpublished) then H 2 was bubbled through the solution for ~30 min. Complete Pd(II) reduction was confirmed as previously described (Yong et al 2002) after the resulting black precipitate settled under gravity.…”

Section: Bio-deposition Of Pd(0) and Precious Metals (Pm)mentioning

confidence: 99%

“…The identity of the deposited metals as Pd(0) was confirmed using X-ray powder diffraction as previously described (Yong et al 2002).…”

Section: Examination Of Metal Crystals By Transmission Electron Micromentioning

confidence: 99%

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Biorefining of precious metals from wastes: an answer to manufacturing of cheap nanocatalysts for fuel cells and power generation via an integrated biorefinery?

et al. 2010

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of precious metals from wastes: an answer to manufacturing of cheap nanocatalysts for fuel cells and power generation via an integrated biorefinery?. Biotechnology Letters, Springer Verlag, 2010, 32 (12) Purpose of workWe have examined the feasibility of using palladium, being recovered microbiologically from industrial processing waste, for the manufacture of a bio-fuel cell for power production. AbstractBio-manufacturing of nano-scale palladium was achieved via enzymatically-mediated deposition of Pd from solution using Desulfovibrio desulfuricans, Escherichia coli and Cupriavidus metallidurans. Dried 'Bio-Pd' materials were sintered, applied onto carbon papers and tested as anodes in a proton exchange membrane (PEM) fuel cell for power production. At a Pd(0) loading of 25% by mass the fuel cell power using Bio-Pd D. desulfuricans (positive control) and Bio-Pd E. coli (negative control) was ~140 and ~ 30 mW respectively.Bio-Pd C. metallidurans was intermediate between these with a power output of ~ 60 mW. An engineered strain of E. coli (IC007) was previously reported to give a Bio-Pd that was >3-fold more active than Bio-Pd of the parent E. coli MC4100 (i.e. a power output of > 110 mW).Using this strain, a mixed metallic catalyst was manufactured from an industrial processing waste. This 'Bio-precious metal' ('Bio-PM') gave ~68% of the power output as commercial 2 Pd(0) and ~50% of that of Bio-Pd D. desulfuricans when used as fuel cell anodic material. The results are discussed in relation to integrated bioprocessing for clean energy.

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“…2 supplemented with 0.4% (w/v) sodium fumarate and 0.5% (v/v) glycerol. Desulfovibrio desulfuricans NCIMB 8307 was cultured anaerobically in Postgate C medium at 30 o C (Yong et al 2002;.…”

Section: Methodsmentioning

confidence: 99%

Section: Bio-deposition Of Pd(0) and Precious Metals (Pm)mentioning

confidence: 99%

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Biorefining of precious metals from wastes: an answer to manufacturing of cheap nanocatalysts for fuel cells and power generation via an integrated biorefinery?

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“…The most common methods for preparing all of these nanoparticles are wet-chemical an aqueous or soil sample onto the organism itself, such as on the cell wall, and does not require the input of energy. Certain bacteria, fungi and plants express peptides or have a modified cell wall which binds to metal ions, and these are able to form stable complexes in the form of nanoparticles [21].…”

Section: Introductionmentioning

confidence: 99%

Biological Synthesis of Metallic Nanoparticles by Bacteria, Fungi and Plants

Pantidos¹

2014

J Nanomed Nanotechnol

464

245

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Over the past few decades interest in metallic nanoparticles and their synthesis has greatly increased. This has resulted in the development of numerous ways of producing metallic nanoparticles using chemical and physical methods. However, drawbacks such as the involvement of toxic chemicals and the high-energy requirements of production make it difficult for them to be widely implemented. An alternative way of synthesising metallic nanoparticles is by using living organisms such as bacteria, fungi and plants. This "green" method of biological nanoparticle production is a promising approach that allows synthesis in aqueous conditions, with low energy requirements and low-costs. This review gives an overview of some of these environmentally friendly methods of biological metallic nanoparticle synthesis. It also highlights the potential importance of these methods in assessing nanoparticle risk to both health and the environment.techniques, which are generally low-cost and high-volume. However, the need for toxic solvents and the contamination from chemicals used in nanoparticle production limit their potential use in biomedical applications [15]. Therefore a "green", non-toxic way of synthesising metallic nanoparticles is needed in order to allow them to be used in a wider range of industries. This could potentially be achieved by using biological methods.Many bacteria, fungi and plants have shown the ability to synthesise metallic nanoparticles and all have their own advantages and disadvantages (Table 1) [16][17][18]. Intracellular or extracellular synthesis, growth temperature, synthesis time, ease of extraction and percentage synthesised versus percentage removed from sample ratio, all play an important role in biological nanoparticle production. Finding the right biological method can depend upon a number of variables. Most importantly, the type of metal nanoparticle under investigation is of vital consideration, as in general organisms have developed resistance against a small number of metals, potentially limiting the choice of organism. However synthetic biology; a nascent field of science, is starting to address these issues in order to create more generalised chassis, able to synthesise more than one type of metallic nanoparticle using the same organism [19]."Natural" biogenic metallic nanoparticle synthesis can be split into two categories. The first is bioreduction, in which metal ions are chemically reduced into more stable forms biologically. Many organisms have the ability to utilise dissimilatory metal reduction, in which the reduction of a metal ion is coupled with the oxidation of an enzyme [20]. This results in stable and inert metallic nanoparticles that can then be safely removed from a contaminated sample. The second category is biosorption. This involves the binding of metal ions from Journal of Nanomedicine & Nanotechnology J o u rna l of N a n o m ed icine & N a n o te chnolo g y

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“…Many studies have demonstrated that challenging bacteria with oxidised metal species resulted in the precipitation of solid phases of the metal. In the case of precious metals and gold, several studies showed that sulfate-reducing bacteria (SRB) and Fe(III) reducing bacteria are able to reduce palladium (Pd), platinum (Pt) and gold (Au) to the zerovalent form of the metal (Lloyd et al, 1998;Kashefi et al, 2001;Yong et al, 2002a). Bioreduction is a system involving enzymatically-assisted metal precipitation from a high valence to a zerovalent state.…”

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confidence: 99%