Diphonix-Cs : A Novel Combined Cesium and Strontium Selective Ion Exchange Resin*

Chiarizia, R.; Horwitz, E. P.; Beauvais, Robert; Alexandratos, Spiro D.

doi:10.1080/07366299808934558

Cited by 26 publications

(9 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The calculated q max values from the D–R model compare favorably to those attained by adsorption of Sr via crown ether-functionalized ion-exchange resins (7.7 mg Sr·g –1 ) and adsorption of Cs and Sr on mineral-based extractants (91.7 mg Cs·g –1 ; 44.7 mg Sr·g –1 ) . Indeed, the polymer exhibits a capacity of the same order of magnitude as a commercial ion-exchange resin with a far larger and more elaborate phosphonic acid–based functional group (315 mg Cs·g –1 ) . Further comparison with literature values is seen in SI Table S7.…”

Section: Resultsmentioning

confidence: 76%

Selective Environmental Remediation of Strontium and Cesium Using Sulfonated Hyper-Cross-Linked Polymers (SHCPs)

James

Harding

Robshaw

et al. 2019

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Sulfonated hyper-cross-linked polymers based on 4,4′-bis(chloromethyl)-1,1′-biphenyl (BCMBP) were synthesized via metal-free (SHCP-1) and conventional Lewis acid-catalyzed (SHCP-2) Friedel–Crafts alkylation routes. The sulfonated polymers possessed BET surface areas in excess of 500 m2·g–1. SHCP-1 was investigated for its ability to extract Sr and Cs ions from aqueous solutions via the ion-exchange reaction of the sulfonic acid moiety. Equilibrium uptake data could be accurately modeled by the Dubinin–Radushkevich isotherm, with maximum calculated loading values of 95.6 ± 2.8 mg·g–1 (Sr) and 273 ± 37 mg·g–1 (Cs). Uptake of both target ions was rapid, with pseudo second-order rate constants calculated as 7.71 ± 1.1 (×10–2) for Sr and 0.113 ± 0.014 for Cs. Furthermore, the polymer was found to be highly selective toward the target ions over large excesses of naturally occurring competing metal ions Na, K, Mg, and Ca. We conclude that hyper-cross-linked polymers may offer intrinsic advantages over other adsorbents for the remediation of aqueous Sr and Cs contamination.

show abstract

Section: Resultsmentioning

confidence: 76%

Selective Environmental Remediation of Strontium and Cesium Using Sulfonated Hyper-Cross-Linked Polymers (SHCPs)

James

Harding

Robshaw

et al. 2019

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…[4] and corresponds to saturation of the PILC by cation exchange, surface complexation or carboxylate complexation reactions. The L and Q max values obtained from the data of Fig.…”

Section: Strontium Adsorption Isothermsmentioning

confidence: 99%

“…[4], Q (meq g −1 ) and C e (meq L −1 ) stand for the equilibrium concentrations of Sr 2+ in PILC and in solution, respectively. Parameter L (L meq −1 ) can be interpreted in terms of the initial slope of the normalized Eq.…”

Section: Strontium Adsorption Isothermsmentioning

confidence: 99%

“…Traditional ion-exchange processes using organic resins have been widely explored for such applications (1)(2)(3). Molecular recognition technology has offered the alternative of specially designed complexants including crown-ethers, calixarenes, cryptands, and related macromolecules that preferentially bind the radionuclides via selective active groups, present in their molecular backbone (4)(5)(6). Yet, in recent years, separation techniques are being further improved by the development of a broad spectrum of inorganic ion exchangers having cavity, tunnel, or layered structures (7)(8)(9).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Strontium Adsorption Properties of an Aluminum-Pillared Montmorillonite Carrying Carboxylate Functional Groups

Papachristodoulou

Assimakopoulos

Gangas

2002

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…Chiarizia and Co-workers developed Diphonix-CS™ resin with phenol groups attached to the polymeric matrix to bind cesium [17][18][19]. The resin can be used to simultaneously adsorb actinides, cesium, and strontium from high level waste solutions.…”

Section: Wsrc-ms-2004-00250mentioning

confidence: 99%

Resorcinol - formaldehyde adsorption of cesium from Hanford waste solutions, Part I. Batch equilibrium study

Hassan

Adu-Wusu

Marra

2004

Journal of Radioanalytical and Nuclear Chemistry

View full text Add to dashboard Cite

Batch equilibrium measurements were conducted at 25 ± 2 o C with a granular Cs were used. Initial concentrations of non-radioactive cesium in the waste sample were varied to generate an equilibrium isotherm for cesium. The majority of the tests were conducted at 25 ± 2 o C using a liquid to solid phase ratio of ~100 mL/g and a contact time of 72 hours.Two additional tests were conducted using a liquid to solid phase ratio of 10 and a contact time of 120 hours.The measured distribution coefficient (K d ) for radioactive cesium (

show abstract

Diphonix-Cs : A Novel Combined Cesium and Strontium Selective Ion Exchange Resin*

Cited by 26 publications

References 11 publications

Selective Environmental Remediation of Strontium and Cesium Using Sulfonated Hyper-Cross-Linked Polymers (SHCPs)

Selective Environmental Remediation of Strontium and Cesium Using Sulfonated Hyper-Cross-Linked Polymers (SHCPs)

Strontium Adsorption Properties of an Aluminum-Pillared Montmorillonite Carrying Carboxylate Functional Groups

Resorcinol - formaldehyde adsorption of cesium from Hanford waste solutions, Part I. Batch equilibrium study

Contact Info

Product

Resources

About