| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Rowson, Neil
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2020Ironmaking and Steelmaking Slags As Sustainable Adsorbents For Industrial Effluents And Wastewater Treatmentcitations
- 2018Effect of filler particle shape on plastic-elastic mechanical behavior of high density poly(ethylene)/mica and poly(ethylene)/wollastonite compositescitations
- 2017The effect of the extent of polymerisation of a slag structure on the strength of alkali-activated slag binderscitations
- 2016Hollow spheres as nanocomposite fillers for aerospace and automotive composite materials applicationscitations
- 2015Utilisation of residue gas sludge (BOS sludge) for removal of heavy metals from acid mine drainage (AMD)citations
- 2015Correlation of Physicochemical Properties with the Catalytic Performance of Fe-Doped Titanium Dioxide Powderscitations
- 2014The effect of low temperature air plasma treatment on physico-chemical properties of kaolinite/polyethylene compositescitations
- 2013Kinetics of metals adsorption in acid mine drainage treatment with blast furnace slag
- 2004Recent Developments in Microwave Assisted Comminutioncitations
- 2002Bioreduction and biocrystallization of palladium by Desulfovibrio desulfuricans NCIMB 8307citations
- 2001The effect of microwave radiation upon the processing of Neves Corvo copper orecitations
- 2001Dielectric properties of coalcitations
Places of action
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article
Bioreduction and biocrystallization of palladium by Desulfovibrio desulfuricans NCIMB 8307
Abstract
The reduction of Pd(II) to Pd(0) was accelerated by using the sulfate-reducing bacterium Desulfovibrio desulfuricans NCIMB 8307 at the expense of formate or H(2) as electron donors at pH 2-7. With formate no reduction occurred at pH 2, but with H(2) 50% of the activity was retained at pH 2, with the maximum rate (1.3-1.4 micromol min(-1) mg dry cells(-1)) seen at pH 3-7, which was similar to the rate with formate at neutral pH. Excess nitrate was inhibitory to Pd(II) reduction using formate, but not H(2). Chloride ion was inhibitory as low as 100 mM using formate but with H(2) only ca. 25% inhibition was observed at 500 mM Cl(-) and H(2) was concluded to be the electron donor of choice for the potential remediation of industrial wastes. Deposited Pd was visible on the cells using transmission and scanning electron microscopy and analysis by energy dispersive X-ray microanalysis (EDAX) identified the deposit as Pd, confirmed as Pd(0) by X-ray powder diffraction analysis (XRD). The crystal size of the biodeposited Pd(0) was determined to be only 50% of the size of Pd(0) crystals manufactured chemically from Pd(II) at the expense of H(2) and, unlike the chemically manufactured material, the biocrystal size was independent of the pH. The "biological" Pd(0) functioned as a superior chemical catalyst in a test reaction which liberated hydrogen from hypophosphite. Pd, and also Pt and Rh, could be recovered by resting cell suspensions under H(2) from an industrial processing wastewater, suggesting a possible future application of bioprocessing technology for precious metals.