Removal of rubidium ions by polyaniline nanocomposites modified with cobalt-Prussian blue analogues

Moazezi, Nima; Moosavian, Mohammad Ali

doi:10.1016/j.jece.2016.04.018

Cited by 46 publications

(22 citation statements)

References 44 publications

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“…By comparing the correlation coefficient R 2 , it appears that the pseudo-second-order kinetic fits the experimental data more accurately than the pseudosecond-order kinetic. This model suggests that ions are exchanged with hydrogen on the PmCH surface [3].…”

Section: Effects Of Contact Time and Adsorption Kineticsmentioning

confidence: 96%

“…A broad bond at around 3100-3650 and 2850-2950 cm -1 are assigned to O-H stretching for the hydrogen bonded hydroxyl groups and the alkyl stretching groups, respectively [3].…”

Section: Characterization Of Polyaniline and Pmchmentioning

confidence: 99%

“…One of the most popular techniques to removal of these toxic compounds is adsorption process [2]. Due to strong adsorption capability to removal of metal ions, polyaniline can be used as a good prospect for adsorption applications [3]. On the other hands, cobalt-hexacyanoferrate is considered as an effective compound in ion exchange and storage potential of counter cations [4].…”

Section: Introductionmentioning

confidence: 99%

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Polyaniline Modified with Cobalt-Hexacyanoferrate (PmCH) as an Adsorbent for Removal of Heavy Metals from Aqueous Solutions

Moazezi

Moosavian

2018

E3S Web Conf.

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Section: Effects Of Contact Time and Adsorption Kineticsmentioning

confidence: 96%

“…A broad bond at around 3100-3650 and 2850-2950 cm -1 are assigned to O-H stretching for the hydrogen bonded hydroxyl groups and the alkyl stretching groups, respectively [3].…”

Section: Characterization Of Polyaniline and Pmchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Polyaniline Modified with Cobalt-Hexacyanoferrate (PmCH) as an Adsorbent for Removal of Heavy Metals from Aqueous Solutions

Moazezi

Moosavian

2018

E3S Web Conf.

Self Cite

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“…With the gradual exhaustion of land mineral resources, oceans and salt lakes have attracted world attention because they are abundant in inorganic mineral resources including Lithium (Li) and rubidium (Rb) . The high commercial values of Li as well as Rb result in explosive demand of them . However, the extraction of Li(I) and Rb(I) is faced with so many problems because of their unique physical and chemical properties .…”

Section: Introductionmentioning

confidence: 99%

Simultaneous adsorption of Li(I) and Rb(I) by dual crown ethers modified magnetic ion imprinting polymers

et al. 2019

Applied Organom Chemis

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With the gradual exhaustion of land mineral resources, oceans and lakes have attracted world attention because they are abundant in inorganic mineral resources including lithium, potassium, rubidium and cesium. Lithium is becoming the key material in manufacturing of primary and secondary batteries used in various portable devices and hybrid/electric vehicles. Rubidium has been widely applied inglobal positioning satellites, magneto‐optic modulators, solid‐state lasers, phosphors, and glass manufacturing. In this work, a novel dual‐functional magnetic ion imprinting polymer (Fe3O4@SiO2@IIPs) powder was prepared using 12‐crown‐4 (12C4) and 18‐crown‐6 (18C6) as functional monomer, and characterized by FT‐IR, elemental analysis, XRD, TGA, SEM and TEM. The adsorption performance of Fe3O4@SiO2@IIPs for simultaneous adsorption of lithium and rubidium from simulative salt lakes was evaluated by batches of experiments at various pH values, contact time, and initial concentrations. Kinetic experiments show that the adsorption process followed the pseudo second order kinetic model. Langmuir adsorption isotherm model and Freundlich adsorption equilibrium data were fitted; the results show that Langmuir isotherm model is more suitable for the adsorption process. Additionally, Fe3O4@SiO2@IIPs exhibit specificity towards Li(I) and Rb(I) and low competitive behavior with Na(I), K(I) and Mg (II). Additionally, the selectivity properties, reusability and adsorption thermodynamic were also investigated. The obtained results show that the prepared Fe3O4@SiO2@IIPs material remains high adsorption capacities after five cycles, exhibits excellent abilities to simultaneously and selectively recover Li+ and Rb+ and have a promising application in the simultaneous adsorption of lithium and rubidium ions.

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“…There are several methods such as fractional crystallization, precipitation, solvent extraction, ion exchange and adsorption have been used for extraction and separation rubidium from its rich resources. Adsorption is an effective method, which most widely used in separation and extraction of rubidium.…”

Section: Introductionmentioning

confidence: 99%

Preconcentration and Separation of Rubidium from Salt Lake Brine by Ammonium Phosphomolybdate - Polyacrylonitrile (AMP-PAN) Composite Adsorbent

et al. 2017

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In this study, a novel composite adsorbent of ammonium phosphomolybdate – polyacrylonitrile (AMP–PAN) was prepared for sensitive and selective preconcentration and separation of rubidium (Rb(I)) ion from salt lake brine. Several experimental parameters, such as pH value, shaking time, concentration, interference ions, regeneration, stability and reusability were systematically investigated. The experimental results clarified that the Rb(I) ion was adsorbed by the adsorbent of AMP‐PAN at pH 7. Under optimum condition, the maximum sorption capacity for Rb(I) ion by the adsorbent was 500 mg g−1 based on the Langmuir adsorption isotherm study. The adsorption equilibrium was achieved within 2 h. The presence of co‐existing ions did not interfere with Rb(I) adsorption, indicating the high selectivity toward Rb(I) ion. The desorption results demonstrated that Rb(I) ion adsorbed the composite adsorbent of AMP‐PAN could be effectively desorbed by 0.5 mol L−1 NH4Cl and regenerated into the initial form without significant deterioration in its original functionality at the same time, which exhibited good stability of the adsorbent. Therefore, the proposed adsorbent of AMP‐PAN allowed the sensitive, selective, easy to use, cost‐effective, high efficiency, fast kinetics, stable and reusability preconcentation and separation of Rb(I) ion even in the presence of competing ions. As a consequence, the AMP‐PAN adsorbent can be used potentially to preconcentration and separation of Rb(I) ion from water samples in a wide range of practical applications for extracting Rb(I) ion in environmental aqueous resources.

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Removal of rubidium ions by polyaniline nanocomposites modified with cobalt-Prussian blue analogues

Cited by 46 publications

References 44 publications

Polyaniline Modified with Cobalt-Hexacyanoferrate (PmCH) as an Adsorbent for Removal of Heavy Metals from Aqueous Solutions

Polyaniline Modified with Cobalt-Hexacyanoferrate (PmCH) as an Adsorbent for Removal of Heavy Metals from Aqueous Solutions

Simultaneous adsorption of Li(I) and Rb(I) by dual crown ethers modified magnetic ion imprinting polymers

Preconcentration and Separation of Rubidium from Salt Lake Brine by Ammonium Phosphomolybdate - Polyacrylonitrile (AMP-PAN) Composite Adsorbent

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