Superlig® 639 Equilibrium Sorption Data for Technetium From Hanford Tank Waste Supernates

Hassan, Neguib M.; King, William D.; McCabe, Daniel J.; Hamm, L.L.; Johnson, Michael E.

doi:10.1081/sei-120003022

Cited by 29 publications

(18 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Dubinin-Radushkevich parameters and the λ value are given in Table 4 along with the coefficient of determination (r 2 ). The energy of sorption value (4.40 kJ/mole) obtained here is about half those obtained for AN-102, AN-103 and AZ-102 Hanford site wastes using an earlier batch of SuperLig ® 644 resin [3]. Since the resin batch and more importantly the wastes are different no meaningful comparisons can be made.…”

Section: Batch Ion Exchangementioning

confidence: 69%

“…The Freundlich parameters and the λ value are given in Table 4 along with the coefficient of determination (r 2 ). Sorption of cesium by SuperLig ® 644 resin from other Hanford site wastes (AN-102, AN-103 and AZ-102) also conformed to the Freundlich isotherm [3]. The second isotherm is the Dubinin-Radushkevich (D-R) equation [24][25][26].…”

Section: Batch Ion Exchangementioning

confidence: 94%

“…This work is part of a larger effort to evaluate the effectiveness of the selected baseline ion exchange resin i.e., SuperLig ® 644 resin to remove 137 Cs from various Hanford site tank wastes [1][2][3][4][5][6][7][8][9][10][11]. The study focused on tank AN-104 waste solution.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Removal of cesium from alkaline waste solution: Part I – Batch ion exchange study

Adu-Wusu¹,

Hassan²,

Nash³

et al. 2005

Radiochimica Acta

View full text Add to dashboard Cite

SuperLig / Resin / Cesium / Batch sorption / Isotherm / Distribution coefficientSummary. Batch ion exchange tests have been employed to evaluate the ability of SuperLig ® 644 resin to remove 137 Cs from highly alkaline nuclear waste solution. The batch sorption data indicated the SuperLig ® 644 resin has a relatively high sorption affinity for cesium with a predicted number of bed volumes required to reach 50% breakthrough in a column operation (generally known as λ value) of ∼ 400 based on an initial total cesium concentration of 12.1 µg/mL. The sorption data also obey the Freundlich and Dubinin-Radushkevich isotherms.

show abstract

Section: Batch Ion Exchangementioning

confidence: 69%

Section: Batch Ion Exchangementioning

confidence: 94%

See 1 more Smart Citation

Removal of cesium from alkaline waste solution: Part I – Batch ion exchange study

Adu-Wusu¹,

Hassan²,

Nash³

et al. 2005

Radiochimica Acta

View full text Add to dashboard Cite

show abstract

“…[1] In this respect, the highers olubility of 99m Tc O 4 À in comparison to the oxoanion of the parent isotope 99 MoO 4 2À immobilized on an alumina columna llows easy in situ productiono ft he radiopharmaceutical. [5] Numerous plants,a lgae, lichens, and various aquatic animals can metabolize technetium to more lipophilic forms,a nd these enter the food chain in asimilarway to mercury uptake. This is am ajor concern because around6 %o ft he total fission product of the nuclear fuel cycle is technetium, [4] predominantly in its oxoanionic form.…”

Section: Introductionmentioning

confidence: 99%

“…This is am ajor concern because around6 %o ft he total fission product of the nuclear fuel cycle is technetium, [4] predominantly in its oxoanionic form. [5] Numerous plants,a lgae, lichens, and various aquatic animals can metabolize technetium to more lipophilic forms,a nd these enter the food chain in asimilarway to mercury uptake. [6] Consequently,t here is great interest in the development of methods to reduce the environmental mobility of this anion as aw ay to reduce the risk caused by the treatment of nuclear fuel waste.…”

Section: Introductionmentioning

confidence: 99%

A Hexameric Cationic Copper(II) Metallacrown as a Pertechnetate and Perrhenate Scavenger

Rodríguez‐Hermida

Lago

Pino-Cuevas

et al. 2015

Chemistry A European J

View full text Add to dashboard Cite

Materials based on the cationic copper(II) hexanuclear 18-membered metallacrown [18-MCCuII-N(2ph)-6](6+) (2phH=2-piconyl hydrazide) and tetrafluoroborate, perchlorate, nitrate, sulfate, and perrhenate anions were prepared by an easy method in aqueous medium. Single-crystal X-ray characterization of six members of this new family of complexes showed that the anions are attached to the metallacrown by direct coordination to a copper cation or by hydrogen-bonding interaction with the center of the hexamer. The stable cationic nature of the complexes and their ability to bind different anions allows them to adsorb and immobilize environmentally relevant anions such as MO4(-) (M=Tc, Re). The MO4(-) trapping capacities suggest that these materials would be useful in the treatment of oxoanionic contaminants in water.

show abstract

Fast Room‐Temperature Synthesis of an Extremely Alkaline‐Resistant Cationic Metal–Organic Framework for Sequestering TcO₄⁻ with Exceptional Selectivity

Kang

Liu

Zhang

et al. 2022

Adv Funct Materials

View full text Add to dashboard Cite

Leveraging metal–organic framework (MOF) to eliminate radioactive contaminants has invariably received much attention, but low preparation efficiency and poor selectivity have still limited its actual application. Herein, it is found that a fourfold interpenetrated cationic MOF (Ag‐TPPE) can be rapidly synthesized by only mixing, stirring, or sonication at room temperature. More impressively, the preparation process can be completed in <1 min. Up to now, this is the first report that cationic MOFs can be obtained by directly mixing the corresponding raw materials at room temperature. In addition to holding the rare merits of structural stability in extremely strong bases (8 m NaOH), Ag‐TPPE can selectively remove TcO4− in the presence of large excess SO42− or NO3−. Based on its ultra‐high selectivity, Ag‐TPPE exhibits exceptional removal rate for TcO4− from simulated Hanford and Savannah River Site waste streams, which refreshes the record of selective sorption of TcO4− at low solid/liquid ratio, overcoming the drawback of overused sorbent in treatment of radioactive waste solution. Such superior sorption capabilities are thoroughly elucidated by the density functional theory calculations on a molecular level, clearly disclosing that TcO4− can enter into the framework through breathing effect and is trapped in the large cavity through dense hydrogen bonds.

show abstract

Superlig® 639 Equilibrium Sorption Data for Technetium From Hanford Tank Waste Supernates

Cited by 29 publications

References 8 publications

Removal of cesium from alkaline waste solution: Part I – Batch ion exchange study

Removal of cesium from alkaline waste solution: Part I – Batch ion exchange study

A Hexameric Cationic Copper(II) Metallacrown as a Pertechnetate and Perrhenate Scavenger

Fast Room‐Temperature Synthesis of an Extremely Alkaline‐Resistant Cationic Metal–Organic Framework for Sequestering TcO₄⁻ with Exceptional Selectivity

Contact Info

Product

Resources

About

Superlig® 639 Equilibrium Sorption Data for Technetium From Hanford Tank Waste Supernates

Cited by 29 publications

References 8 publications

Removal of cesium from alkaline waste solution: Part I – Batch ion exchange study

Removal of cesium from alkaline waste solution: Part I – Batch ion exchange study

A Hexameric Cationic Copper(II) Metallacrown as a Pertechnetate and Perrhenate Scavenger

Fast Room‐Temperature Synthesis of an Extremely Alkaline‐Resistant Cationic Metal–Organic Framework for Sequestering TcO4− with Exceptional Selectivity

Contact Info

Product

Resources

About

Fast Room‐Temperature Synthesis of an Extremely Alkaline‐Resistant Cationic Metal–Organic Framework for Sequestering TcO₄⁻ with Exceptional Selectivity