Formation and recovery of Co2+, Ni2+, Cu2+ macromolecular complexes with polystyrene and acrylic acid

Qi, Xinhua; Jia, Xueqing; Yang, Ying; Niu, Lanqiang

doi:10.1016/j.hydromet.2008.11.001

Cited by 7 publications

(6 citation statements)

References 11 publications

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“…The results of the FTIR analysis (Figure 1) showed the major adsorption bonds at the following frequencies. A broad and intense peak at 3469 cm −1 is attributed to O–H vibrations [20]; the –C≡N stretching vibrations peaks are appeared at 2244 cm −1 ; The peaks at 1732 and 1453 cm −1 are assigned to the C=O and C–O–C stretching bonds of the ester group [21,22].…”

Section: Methodsmentioning

confidence: 99%

β-Cyclodextrin Modified Poly(Acrylonitrule-co-Acrylic Acid) Hydrogel for Thorium(IV) Adsorption

Duan

Zhong

et al. 2017

Polymers

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Abstract:In this report, the β-CD(AN-co-AA) hydrogel was used to remove the thorium(IV) [Th(IV)] from the water system, and the new adsorbent was characterized through Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and X-ray diffraction (XRD). The influences of contact time, pH value, ionic strength, solid-liquid ratio, initial Th(IV) concentration, and temperature on Th(IV) adsorption onto the functional hydrogel were researched. The results showed that the experimental data followed the Langmuir isotherm and the maximum adsorption capacity (q max ) for Th(IV) was 692 mg/g at pH 2.95, which approached the calculated (q e ) 682 mg/g. The desorption capacity of Th(IV) in different HNO 3 concentrations ranging from 0.005 to 0.5 M was also studied, and the percentage of the maximum desorption was 86.85% in the condition of 0.09 M HNO 3 . The selectivity of β-CD(AN-co-AA) hydrogel was also be studied, the results indicated that this material retained the good adsorption capacity to Th(IV) even when the Ca 2+ , Mg 2+ , or Pb 2+ existed in the system. The findings indicate that β-CD(AN-co-AA) can be used as a new candidate for the enrichment and separation of Th(IV), or its analogue actinides, from large-volume solution in practical application.

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Section: Methodsmentioning

confidence: 99%

β-Cyclodextrin Modified Poly(Acrylonitrule-co-Acrylic Acid) Hydrogel for Thorium(IV) Adsorption

Duan

Zhong

et al. 2017

Polymers

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“…Currently, there are various techniques available to separate metallic ions, including differential precipitation, solvent extraction, distillation, ion exchange, flotation and filtration membranes. However, ion exchange resins are the most widely used materials to remove ions from aqueous sources and some widely used applications are in water softening, wastewater treatment, hydrometallurgy and chromatography 1–4…”

Section: Introductionmentioning

confidence: 99%

Poly(sodium 4‐styrene sulfonate) and poly(2‐acrylamido glycolic acid) polymer–clay ion exchange resins with enhanced mechanical properties and metal ion retention

Urbano

Rivas

2011

Polymer International

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This research presents the synthesis of novel nanocomposite ion exchange resins based on poly(sodium 4-styrene sulfonate) and poly(2-acrylamido glycolic acid). Nanocomposites were synthesized by in situ radical polymerization using organic modified montmorillonite as filler and different clay contents. Loaded resins showed improvements in mechanical properties compared with unloaded resins: specifically, when the nominal montmorillonite content was 2.5 wt%, poly(sodium 4-styrene sulfonate) nanocomposite increased its shear modulus from 323 to 910 Pa and doubled its elastic recovery ratio, and the yield point was almost 20 times higher than for unloaded resins. In the case of metal ion retention, the effect of pH and clay content were studied for Cd(II), Pb(II), Cu(II), Cr(III) and Al(III) by a batch procedure. Results showed high efficiency, reaching over 80% after only 1 h of contact. Poly(2-acrylamido glycolic acid) presented a higher pH dependence than poly(sodium 4-styrene sulfonate). In addition, it was observed that montmorillonite contributes to retention capacity from the increase in distribution coefficients for loaded resins compared with unloaded resins.

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“…Based on the values of the coefficients of determination, R 2 and the values of q e (Table ), the pseudosecond order equation is the model that best fits the experimental kinetic data, suggesting chemical sorption as the rate determining step. A similar phenomenon has been observed in the adsorption of many trace metal ions by different chelating resins. − Accordingly, the adsorption of Cu(II), Ni(II), and Co(II) ions by PsSO 2 ASA is considered to consist of two processes with initial adsorption rates (h) of (5.737, 6.510, and 5.707) mg g −1 min −1 for Cu(II), Ni(II), and Co(II), respectively, which have been calculated by using eq . italich = italick 2 italicq normale 2 …”

Section: Resultsmentioning

confidence: 70%

Complex Formation, Metal Uptake, and Sorption Kinetics of a Chemically Modified Chlorosulfonated Polystyrene with Aminosalicylic Acid

El‐Dissouky¹,

Bu-Olian²

2011

J. Chem. Eng. Data

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The resin (PsSO2ASA) was synthesized by the reaction of chlorosulfonated polystyrene (Ps-SO2Cl) with 4-aminosalicylic acid (ASA) and characterized by elemental analysis, SEM, EDS, and FT-IR spectral studies and thermal analysis. Its metallopolymer complexes with Co(II), Ni(II), and Cu(II) ions were examined with respect to various experimental parameters. The spectral (FT-IR, electronic, and ESR) studies confirmed that the octahedral complexes formed and the resin bonded to the metal ion through the carboxylato- and phenolato-O atoms. The metal sorption by the resin from aqueous solutions at different conditions was investigated by batch and column methods utilizing ICP−AES. Kinetic studies showed that the adsorption of metal ions onto the resin proceeds according to the pseudosecond order model, and the equilibrium data was best interpreted by the Langmuir isotherm. The sorption capacity was observed in the order of Cu(II) > Co(II) > Ni(II). The calculated thermodynamic parameters indicated an endothermic spontaneous sorption accompanied by deprotonation of the resin and liberation of water of hydration of the metal ions and that adsorbed by the free resin. The degrees of freedom increased at the solid−liquid interface during the sorption of the metal ions onto the resin. The lower detected concentration by the method was found to be (10 to 20) ng mL−1. The method was successfully applied to the analysis of natural water samples.

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Formation and recovery of Co2+, Ni2+, Cu2+ macromolecular complexes with polystyrene and acrylic acid

Cited by 7 publications

References 11 publications

β-Cyclodextrin Modified Poly(Acrylonitrule-co-Acrylic Acid) Hydrogel for Thorium(IV) Adsorption

β-Cyclodextrin Modified Poly(Acrylonitrule-co-Acrylic Acid) Hydrogel for Thorium(IV) Adsorption

Poly(sodium 4‐styrene sulfonate) and poly(2‐acrylamido glycolic acid) polymer–clay ion exchange resins with enhanced mechanical properties and metal ion retention

Complex Formation, Metal Uptake, and Sorption Kinetics of a Chemically Modified Chlorosulfonated Polystyrene with Aminosalicylic Acid

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