Chemical constituents in the dissolved and suspended fractions of ground water from selected sites, Idaho National Engineering Laboratory and Vicinity, Idaho, 1989

Knobel, LeRoy L.; Bartholomay, Roy C.; Cecil, L. DeWayne; Tucker, Betty J.; Wegner, Steven J.

doi:10.3133/ofr9251

Cited by 18 publications

(15 citation statements)

References 17 publications

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“…The composition of the synthetic water developed for use in the laboratory experiments was based on typical water chemistry data for the Snake River Plain Aquifer in the vicinity of the INEEL (Knobel et al, 1992). The synthetic groundwater contained KNO 3 (0.040 mM), MgSO 4 (0.45 mM), CaCl 2 (1.8 mM), NaNO 3 (0.040 mM), NaHCO 3 (1.1 mM), and KHCO 3 (0.062 mM).…”

Section: Synthetic Groundwatermentioning

confidence: 99%

Strontium incorporation into calcite generated by bacterial ureolysis

Fujita

Redden

Ingram

et al. 2004

Geochimica et Cosmochimica Acta

214

141

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Abstract-Strontium incorporation into calcite generated by bacterial ureolysis was investigated as part of an assessment of a proposed remediation approach for 90 Sr contamination in groundwater. Urea hydrolysis produces ammonium and carbonate and elevates pH, resulting in the promotion of calcium carbonate precipitation. Urea hydrolysis by the bacterium Bacillus pasteurii in a medium designed to mimic the chemistry of the Snake River Plain Aquifer in Idaho resulted in a pH rise from 7.5 to 9.1. Measured average distribution coefficients (D EX ) for Sr in the calcite produced by ureolysis (0.5) were up to an order of magnitude higher than values reported in the literature for natural and synthetic calcites (0.02-0.4). They were also higher than values for calcite produced abiotically by ammonium carbonate addition (0.3). The precipitation of calcite in these experiments was verified by X-ray diffraction. Time-of-flight secondary ion mass spectrometry (ToF SIMS) depth profiling (up to 350 nm) suggested that the Sr was not merely sorbed on the surface, but was present at depth within the particles. X-ray absorption near edge spectra showed that Sr was present in the calcite samples as a solid solution. The extent of Sr incorporation appeared to be driven primarily by the overall rate of calcite precipitation, where faster precipitation was associated with greater Sr uptake into the solid. The presence of bacterial surfaces as potential nucleation sites in the ammonium carbonate precipitation treatment did not enhance overall precipitation or the Sr distribution coefficient. Because bacterial ureolysis can generate high rates of calcite precipitation, the application of this approach is promising for remediation of 90 Sr contamination in environments where calcite is stable over the long term.

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Section: Synthetic Groundwatermentioning

confidence: 99%

Strontium incorporation into calcite generated by bacterial ureolysis

Fujita

Redden

Ingram

et al. 2004

Geochimica et Cosmochimica Acta

214

141

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“…This has been undertaken using an artificial groundwater (AGW) based upon the aqueous chemistry of the Snake River Plain Aquifer (SRPA) (Knobel et al, 1992) in the vicinity of the Idaho National Engineering and Environmental Laboratory.…”

Section: Methodsmentioning

confidence: 99%

Environmentalmanagement Science Program Project Number 87016 Co-Precipitation of Tracemetals Ingroundwater and Vadose Zone Calcite: In Situ Containment and Stabilization of Strontium-90 Andother Divalent Metals and Radionuclides at Aridwestern Doe Sites

Ferris¹,

Fujita²,

Smith³

et al. 2004

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“…From calcite precipitation induced by ureolytic bacteria, some authors have evaluated to add divalent metals (e.g., Pb, Zn, Ba and Cd) and radionuclides (e.g., 90 Sr and 60 Co) [61] in a coprecipitation of the contaminants in the original calcite precipitates, which would occur by the isomorphic replacement of the Ca 2+ in the lattice structure and the incorporation in the interstitial positions or at defect vacancies [62,63] generating an important application for biomineralization as a remediation strategy for contaminated groundwater [63].…”

Section: Types Of Biominerals Produced By Ureolytic Bacteriamentioning

confidence: 99%

Biomineralization Mediated by Ureolytic Bacteria Applied to Water Treatment: A Review

2017

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Abstract:The formation of minerals such as calcite and struvite through the hydrolysis of urea catalyzed by ureolytic bacteria is a simple and easy way to control mechanisms, which has been extensively explored with promising applications in various areas such as the improvement of cement and sandy materials. This review presents the detailed mechanism of the biominerals production by ureolytic bacteria and its applications to the wastewater, groundwater and seawater treatment. In addition, an interesting application is the use of these ureolytic bacteria in the removal of heavy metals and rare earths from groundwater, the removal of calcium and recovery of phosphate from wastewater, and its potential use as a tool for partial biodesalination of seawater and saline aquifers. Finally, we discuss the benefits of using biomineralization processes in water treatment as well as the challenges to be solved in order to reach a successful commercialization of this technology.

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Chemical constituents in the dissolved and suspended fractions of ground water from selected sites, Idaho National Engineering Laboratory and Vicinity, Idaho, 1989

Cited by 18 publications

References 17 publications

Strontium incorporation into calcite generated by bacterial ureolysis

Strontium incorporation into calcite generated by bacterial ureolysis

Environmentalmanagement Science Program Project Number 87016 Co-Precipitation of Tracemetals Ingroundwater and Vadose Zone Calcite: In Situ Containment and Stabilization of Strontium-90 Andother Divalent Metals and Radionuclides at Aridwestern Doe Sites

Biomineralization Mediated by Ureolytic Bacteria Applied to Water Treatment: A Review

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