Speciation and adsorption of trace-level fission product of132Te,95Zr,99Mo and103Ru on inorganic materials

Granados, F.; Bertín, V.; Bulbulian, S.

doi:10.1023/b:jrnc.0000027113.50529.5a

Cited by 14 publications

(5 citation statements)

References 21 publications

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“…Iron oxide nanoparticles provide a high-surface-area material with an intrinsic chemical affinity for heavy metals and radionuclides (Filipska and Stamberg 2006;Granizo and Missana 2009;Hu et al 2005;Lujaniene et al 2009;Navratil 2001;Sadeghi et al 2010;Yavuz et al 2006;Das et al 2010). Manganese-containing oxides have also shown a high affinity toward a number of radionuclides (Ayaz and DeVol 2003;Benedik et al 2009;Granados et al 2004;Koulouris 1995;Mateos et al 2000;Serrano and Garcia 1998), and thus the inclusion of manganese into the magnetic iron oxide core was pursued. The materials can be dispersed easily into solution and collected rapidly with moderate magnetic fields that can be provided with either permanent magnets or electromagnets (Yavuz et al 2006(Yavuz et al , 2009.…”

Section: Advanced Sorbent Materials For Alpha Assaymentioning

confidence: 99%

Investigation of Magnetic Nanoparticles for the Rapid Extraction and Assay of Alpha-Emitting Radionuclides From Urine: Demonstration of a Novel Radiobioassay Method

O’Hara

Carter²,

MacLellan³

et al. 2011

Health Physics

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In the event of an accidental or intentional release of radionuclides into a populated area, massive numbers of people may require radiobioassay screening as triage for dose-reduction therapy or identification for longer-term follow-up. If the event released significant levels of beta- or alpha-emitting radionuclides, in vivo assays would be ineffective. Therefore, highly efficient and rapid analytical methods for radionuclide detection from submitted spot urine samples (≤50 mL) would be required. At present, the quantitative determination of alpha-emitting radionuclides from urine samples is highly labor intensive and requires significant time to prepare and analyze samples. Sorbent materials that provide effective collection and enable rapid assay could significantly streamline the radioanalytical process. The authors have demonstrated the use of magnetic nanoparticles as a novel method of extracting media for four alpha-emitting radionuclides of concern (polonium, radium, uranium and americium) from chemically-unmodified and pH-2 human urine. Herein, the initial experimental sorption results are presented along with a novel method that uses magnetic nanoparticles to extract radionuclides from unmodified human urine and then collect the magnetic field-induced particles for subsequent alpha-counting-source preparation. Additionally, a versatile human dose model is constructed that determines the detector count times required to estimate dose at specific protective-action thresholds. The model provides a means to assess a method's detection capabilities and uses fundamental health physics parameters and actual experimental data as core variables. The modeling shows that, with effective sorbent materials, rapid screening for alpha-emitters is possible with a 50-mL urine sample collected within 1 wk of exposure/intake.

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Section: Advanced Sorbent Materials For Alpha Assaymentioning

confidence: 99%

Investigation of Magnetic Nanoparticles for the Rapid Extraction and Assay of Alpha-Emitting Radionuclides From Urine: Demonstration of a Novel Radiobioassay Method

O’Hara

Carter²,

MacLellan³

et al. 2011

Health Physics

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“…Separation of Ru has also been achieved by coprecipitation, sequential distillation, precipitation, and adsorption onto inorganic materials (Gandon et al, 1993;Granados et al, 2004;Rathore et al, 2004;ElAbsy et al, 2005). Other methods used in the removal of metal ions from solutions include chemical precipitation, ultra-filtration, biochemical treatment, ion exchange, and adsorption (Nassar et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Removal of Ruthenium from Aqueous Solution by Clinoptilolite

Kabiri-Tadi

Faghihian

2011

Clays and clay miner.

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Ruthenium compounds are highly toxic and carcinogenic. In the present study, clinoptilolite was used in the removal of Ru species from aqueous solutions. Clinoptilolite is a good choice of sorbents because it is naturally abundant and therefore cheap. After the process where Ru was removed from the aqueous solution, the clinoptilolite was characterized by X-ray diffraction, X-ray fluorescence, thermogravimetric analysis, and Fourier-transform infrared spectroscopy techniques. The influence of pH, contact time, and temperature on the adsorption of Ru was investigated and the optimum conditions were found to be 2 h of contact time and pH = 2. Pseudo first-order, pseudo second-order, Elovich, and intra-particle diffusion models were used to analyze the adsorption-rate data. The pseudo second-order model was found to be the best kinetics model in terms of matching the experimental results obtained. Adsorption isotherms were constructed to assess the maximum adsorption capacity of clinoptilolite. The Langmuir model fitted the data reasonably well in terms of regression coefficients. Adsorption studies were also performed at different temperatures to calculate the thermodynamic parameters. The numerical value of DG 0 decreased with increasing temperature, indicating that adsorption is favored at higher temperatures. The positive values of DH 0 corresponded to the endothermic nature of the adsorption processes. The proposed method of removal is applicable at an industrial scale.

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“…Therefore, from viewpoint of full utilization of resources it is quite important the effective recovery of PGM's metals from both natural ore and industrial waste. Recovery of such metals from spent systems can represent an efficient way to reduce the dependence on this limited raw material 2,6,7 .For effective recovery were developed several methods, such as: solvent extraction 8 , ion exchange 9 , membrane separation 2,10 , complexation 11 , retention on porous polymers 12 , coprecipitation, sequential distillation, precipitation and adsorption which is presented in the literature as the method with higher efficiency for recovery of PGM's from aqueous solutions 2,4,5,11,[13][14][15] .From all these recovery methods, adsorption seems to be the most suitable method for the recovery of PGM's from diluted solutions, due to low cost and high efficiency 14,[16][17][18][19] . Based on technical and economical points of view a special attention is granted to the materials with good adsorbent properties.…”

mentioning

confidence: 99%

“…From all these recovery methods, adsorption seems to be the most suitable method for the recovery of PGM's from diluted solutions, due to low cost and high efficiency 14,[16][17][18][19] . Based on technical and economical points of view a special attention is granted to the materials with good adsorbent properties.…”

mentioning

confidence: 99%

Precious metals recovery from aqueous solutions using a new adsorbent material

Grad

Ciopec

Negrea

et al. 2021

Sci Rep

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Platinum group metals (PGMs) palladium, platinum, and ruthenium represent the key materials for automotive exhaust gas treatment. Since there are no adequate alternatives, the importance of these metals for the automotive industry is steadily rising. The high value of PGMs in spent catalysts justifies their recycling. Therefore, it is really important to recovery platinum group metals from aqueous solutions. Of the many PGMs recovery procedures, adsorption is a process with a good efficiency, but an important role is played by the adsorbent material used into the process. In order to improve the adsorption properties of materials were developed new methods for chemical modification of the solid supports, through functionalization with different extractants. In present paper a new adsorbent material (Chitosan-DB18C6) was used for PGMs recovery. The new adsorbent material was produced by impregnating Chitosan with dibenzo-18-crown-6-ether using Solvent Impregnated Resin (SIR) method. The crown ethers were chosen as extractant due to their known ability to bind metallic ions, whether they are symmetrically or unsymmetrically substituted. In order to determine the PGMs recovery efficiency for new prepared adsorbent material the equilibrium and kinetic studies were performed. Also, to study the PGMs adsorption mechanism the experimental data were modelled using pseudo-first-order and pseudo-second order kinetic models. Experimental data were fitted with three equilibrium isotherm models: Langmuir, Freundlich and Sips. The results proved that new adsorbent material (Chitosan-DB18C6) is an efficient adsorbent for PGMs recovery from aqueous solutions.

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Speciation and adsorption of trace-level fission product of¹³²Te,⁹⁵Zr,⁹⁹Mo and¹⁰³Ru on inorganic materials

Cited by 14 publications

References 21 publications

Investigation of Magnetic Nanoparticles for the Rapid Extraction and Assay of Alpha-Emitting Radionuclides From Urine: Demonstration of a Novel Radiobioassay Method

Investigation of Magnetic Nanoparticles for the Rapid Extraction and Assay of Alpha-Emitting Radionuclides From Urine: Demonstration of a Novel Radiobioassay Method

Removal of Ruthenium from Aqueous Solution by Clinoptilolite

Precious metals recovery from aqueous solutions using a new adsorbent material

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