Synthesis and characterization of new ion-imprinted polymer for separation and preconcentration of uranyl (UO22+) ions

Ahmadi, Seyed Javad; Noori-kalkhoran, Omid; Shirvani-Arani, Simindokht

doi:10.1016/j.jhazmat.2009.09.148

Cited by 55 publications

(26 citation statements)

References 14 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Recently, many works have been reported for uranium extraction using the organic extractant imprinted with an inert polymeric support like polystyrene [27][28][29][30]. Also, uranium sorption from phosphoric acid solutions using a series of polymeric resin beads impregnated with the synergistic combination D2EHPA/TOPO at various mole ratios was studied whereas the macroporous polystyrene-divinyl benzene copolymer containing aminophosphonic functional groups (Duolite DES 467) was separately applied [31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Characteristics of uranium recovery from phosphoric acid by an aminophosphonic resin and application to wet process phosphoric acid

Cheira

2015

Eur. J. Chem.

View full text Add to dashboard Cite

The chelating aminomethylphosphonic resin Amberlite IRC747 is used for uranium recovery from a synthetic phosphoric acid solution. The operating conditions of uranium extraction have been experimentally optimized by the batch technique viz., the phosphoric acid concentration, the contact time, the initial uranium concentration and the temperature. The effect of some interfering ions upon the effective capacity of the resin has also been examined. It has thus been found that the maximum uranium adsorption capacity of the studied chelating resin was found to attain 86.5 mg/g at 5 M phosphoric acid using 0.1 g resin for 120 min contact time with 50 mL acid assaying 200 mg U/L and room temperature. The obtained equilibrium data agreed well with the Langmuir isotherm model and the relevant thermodynamic parameters (ΔG, ΔH and ΔS) were evaluated and the uranium adsorption was found to be an endothermic reaction and of spontaneous nature. From the kinetic experiments it was shown that U(VI) adsorption followed the pseudo-second order kinetics model and the intraparticle diffusion model. Also, it has been possible to reveal from the kinetic and isotherm data the chemisorption nature of uranium on the Amberlite IRC747 resin. The adsorbed uranium ions can almost be completely eluted with 0.8 M (NH4)2CO3 solution from the loaded resin at room temperature. The studied optimized conditions have successfully been applied for uranium recovery from Abu Zaabal wet process phosphoric acid (WPPA).

show abstract

Section: Introductionmentioning

confidence: 99%

Characteristics of uranium recovery from phosphoric acid by an aminophosphonic resin and application to wet process phosphoric acid

Cheira

2015

Eur. J. Chem.

View full text Add to dashboard Cite

show abstract

“…Besides, the dosage of cross-linkers determines the particle size and uniformity of IIPs. Many studies 49,50 have shown that nding an optimum ratio is very important to improve a polymer's properties.…”

Section: Components Of Iips Preparationmentioning

confidence: 99%

“…For helpful expounding on UO 2 2+ -IIPs, we selected some references that are presented in Table 5. Bulk polymerization 39,50,67,209,210 is most adopted in UO 2…”

Section: Actinide Elements Iipsmentioning

confidence: 99%

Current status and challenges of ion imprinting

et al. 2015

View full text Add to dashboard Cite

Ion imprinting technology (IIT) aims to recognize ions while retaining the unique virtues of molecular imprinting technology (MIT), namely structure predictability, recognition specificity and application universality. Owing to special coordination or electrostatic interactions, ion imprinted polymers (IIPs) are generally compatible with aqueous media and have advantages over most molecularly imprinted polymers (MIPs). IIPs can achieve effective identification of water-soluble ions, especially heavy metals and radioactive elements that cause increasing concerns. The purpose of this review is to summarize recent advances of ion imprinting, focusing on the current status and challenges in fundamentals and applications that involve almost all types of ions and ion-related molecular imprinting. In addition, various smart strategies are highlighted, such as surface imprinting, stimuli-responsive imprinting, dual/ multiple components imprinting, click chemistry, and microwave-assisted heating. In this review, the elemental periodic table is first utilized as a template to introduce ion classification standards for various IIPs, including main groups, transition elements, actinides, rare earths, metalloids, anion imprinting and secondary imprinting. Finally, the challenges and possible solution strategies plus future trends are also proposed (302 references).

show abstract

“…Kullanım amacına uygun çeşitli fonksiyonel gruplara sahip sentezlenmiş ve modifiye edilmiş edilmiş hidrojeller polimerik adsorban olarak kullanılabilirler. Bununla birlikte hedef iyon iyona karşı hidrojelin seçiciliği için fonksiyonel gruplar çoğunlukla yeterli olmamaktadır [1][2][3][4][5][6]. Çalışmamızda altın iyonu varlığında 4-akriloilmorfolin, 2-hidroksietil akrilat ve poli(etilenglikol)diakrilat' ın ışıkla polimerleştirilmesiyle Au(III) baskılanmış yeni bir hidrojel (Au(III)-Imp) hazırlanmıştır.…”

Section: Introductionunclassified

Moleküler Olarak Baskılanmış Çapraz Bağlanan Hidrojeller ile Sulu Çözetideki Altın İyonlarının Adsorpsiyonu

Çubuk¹,

Kahraman²,

Yetimoğlu³

et al. 2014

MUFBED

View full text Add to dashboard Cite

ÖzetBu çalışmada sulu çözeltideki altın (III) iyonu adsorpsiyonu amacıyla altın (III) iyonu baskılanmış (Au(III)-Imp) ve baskılanmamış (N-Imp) yeni hidrojeller hazırlanmıştır. Hidrojellerin fonksiyonel grupları seyreltilmiş toplam reflektans infrared spektroskopi (ATR-IR) ile araştırılmıştır. Hidrojellerin yüzey morfolojileri taramalı elektron mikroskobu (SEM) ile karakterize edilmiştir. Hazırlanan bu iyon baskılı ve baskılanmamış hidrojellerinin Au(III) iyonlarını adsorpsiyonunu etkileyen parametreler incelenerek maksimum adsorpsiyon için uygun şartlar ortam pH'ı 1, adsorpsiyon süresi 3 saat ve bu şartlar altında maksimum adsorpsiyon 500 mg/L' de 78,4 mg Au(III)/g hidrojel olarak belirlenmiştir.Anahtar kelimeler: Baskılanmış hidrojel, Au(III) iyonu, UV ile sertleşme, adsorpsiyon. Adsorption of Gold Ions from Aqueous Solution with PhotocrosslinkedMolecularly Imprinted Hydrogels AbstractIn this study, gold (III) ion-imprinted (Au(III)-Imp) and non-imprinted (N-Imp) new hydrogels was prepared for the purpose of adsorption of the aqueous solution of gold (III) ion. The functional groups of hydrogels were investigated by attenuated total reflectance infrared spectroscopy technique (ATR-IR). The surface morphologies of hydrogels were characterized by scanning electron microscopy (SEM). Au(III) ions adsorptions with Au(III)-Imp and N-Imp hydrogels was investigated and the suitable conditions for maximum adsorption was found as pH:1 and adsorption time: 3 hours. Under this conditions maximum adsorption was determined as 78.4 mg Au(III)/g hydrogel at 500 mg/L.

show abstract

Synthesis and characterization of new ion-imprinted polymer for separation and preconcentration of uranyl (UO22+) ions

Cited by 55 publications

References 14 publications

Characteristics of uranium recovery from phosphoric acid by an aminophosphonic resin and application to wet process phosphoric acid

Characteristics of uranium recovery from phosphoric acid by an aminophosphonic resin and application to wet process phosphoric acid

Current status and challenges of ion imprinting

Moleküler Olarak Baskılanmış Çapraz Bağlanan Hidrojeller ile Sulu Çözetideki Altın İyonlarının Adsorpsiyonu

Contact Info

Product

Resources

About