Bioaccumulation of nickel by microbially-enhanced chemisorption into polycrystalline hydrogen uranyl phosphate

Basnakova, Gabriela; Macaskie, Lynne E.

doi:10.1007/bf00142941

Cited by 12 publications

(8 citation statements)

References 17 publications

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“…1,3,4 Biomass was grown aerobically in two independent 3 dm 3 batch cultures (batches I and II) at 30°C with lactose as the carbon source and ammonium phosphate as the combined nitrogen and phosphate source, in minimal medium comprising: 4 Tris±(hydroxymethyl)aminomethane buffer (Tris; 12 g dm À3 ), lactose (®lter sterilized; 2.13 g dm À3 ), (NH 4 ) 2 HPO 4 (0.96 g dm À3 ), KCl (0.62 g dm À3 ), MgSO 4 Á7H 2 O (0.063 g dm À3 ), and FeSO 4 Á7H 2 O (0.00032 g dm À3 ), pH 7 (with HCl). The cultures were harvested by centrifugation in the stationary phase (24 h) and the phosphatase speci®c activity was determined by liberation of p-nitrophenol from pnitrophenyl phosphate 26 as 1367 and 1550 nmol p-nitrophenol min À1 per mg of protein for batches I and II, respectively.…”

Section: Organisms Growth Conditions Biomass Immobilization and Expmentioning

confidence: 98%

“…2 An effective removal of nickel from dilute aqueous¯ows was achieved by employing intercalative ion exchange of nickel into biologically-synthesized crystalline hydrogen uranyl phosphate (HUO 2 PO 4 .4H 2 O, HUP). 3,4 The resulting, biomass-bound, crystalline deposit was identi®ed as nickel uranyl phosphate (Ni(UO 2 PO 4 ) 2 .7H 2 O). Ni 2+ was reversibly intercalated; cell-bound hydrogen uranyl phosphate could be regenerated and used in sequential Ni sorption/ desorption cycles.…”

Section: Introductionmentioning

confidence: 99%

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Accumulation of zirconium and nickel byCitrobacter sp

Basnakova

Macaskie

1999

J. Chem. Technol. Biotechnol.

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Zirconium in aqueous¯ows was moderately biomineralized by immobilized Citrobacter N14 cells, in the form of gel-like deposits, probably comprising a mixture of zirconium hydrogen phosphate (Zr(HPO 4 ) 2 ) and hydrated zirconia (ZrO 2 ). The simultaneous presence of uranyl ion (UO P P ) did not facilitate zirconium deposition and the biomineralization of uranium itself as HUO 2 PO 4 was repressed by zirconium in the presence of excess inorganic phosphate, liberated enzymatically. Nickel (Ni 2+ ) was not signi®cantly removed from aqueous¯ows by sorption into cell-bound zirconium deposits, although cell-bound hydrogen uranyl phosphate (HUP) facilitated nickel removal via intercalative ion exchange into its polycrystalline lattice. A preformed layer of HUP also promoted zirconium removal, at 100% ef®ciency at pH 2.6, maintained over 38 column¯uid-volumes before saturation.

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Section: Organisms Growth Conditions Biomass Immobilization and Expmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Accumulation of zirconium and nickel byCitrobacter sp

Basnakova

Macaskie

1999

J. Chem. Technol. Biotechnol.

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“…with sulphide-bearing ores and their role in the dissolution of oxides and the release of valuable metals. Likewise, Fortin et al [10] and Basnakova and Macaskie [11] highlighted the contribution of bacteria to the formation of sulphide and phosphide minerals by chemical complexing with available constituent sulphide and phosphide groups. A few studies also explain the intracellular sequestration [12,13] and extracellular precipitation [14,15] of metals by a group of metal-resistant bacteria, each affecting metal mobility in the environment.…”

Section: Introductionmentioning

confidence: 97%

Immobilisation of manganese, cobalt and nickel by deep-sea-sediment microbial communities

Sujith

Das

Mourya

et al. 2011

Chemistry and Ecology

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Box core samples BC26 and BC36 from geologically different settings were examined to test the hypothesis that autochthonous microbial communities from polymetallic-nodule-rich Central Indian Basin sediments actively participate in immobilising metal ions. The bottom water dissolved oxygen concentration was reported to be 4.2-4.3 mL·L −1 in the northern siliceous ooze (BC26) and 4.1-4.2 mL·L −1 in the southern pelagic red clay (BC36); the sedimentation rates for these regions were 0.834 and 0.041 cm·kyr −1 , respectively. An onboard experiment, conducted under oxic and sub-oxic conditions with 100 μmol of Mn, Co and Ni, showed that microbial immobilisation under sub-oxic conditions was higher than in azide-treated controls in BC26 for Mn, Co and Ni at 30, 2 and 4 cm below sea floor (bsf), respectively, after 45 days. The trend in immobilisation was BC26 > BC36, Co > Mn > Ni under oxic conditions and Mn > Co > Ni under sub-oxic conditions. The depth of maximum immobilisation for Co in BC26 under sub-oxic conditions coincided with the yield of cultured Co-tolerant bacteria and Ni only with organic carbon at 4 cm bsf. This study demonstrates that the organic carbon content and bioavailable metal concentrations in sediments regulate microbial participation in metal immobilisation.

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“…HUP exhibits high proton conductivities and can be employed as a solid electrolyte in micro-ionic devices, such as sensors [1][2][3][4], batteries [5] and electrochromic displays [6][7]. Studies of this compound has been centered on the structure [8][9][10][11], reactivity [12][13][14][15], vibrational spectroscopy [16], synthesis and characterization of intercalation compounds with different cationic species [17][18][19], diffusion and protonic conductivity mechanism [20][21][22][23][24][25][26][27][28], and chemisorption properties of HUP bound to biomass of bacteria [29][30][31][32][33]. Photoluminescence properties [34][35][36][37][38][39], have also been investigated in the literature, but they are not analyzed in terms of restricted geometry [40][41][42][43][44][45]...…”

Section: Introductionmentioning

confidence: 99%