Evaluation of PAN-based manganese dioxide composite for the sorptive removal of cesium-137 from aqueous solutions

Nilchi, A.; Saberi, R.; Garmarodi, S. Rasouli; Bagheri, Ahmad Reza

doi:10.1016/j.apradiso.2011.10.018

Cited by 53 publications

(29 citation statements)

References 27 publications

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“…Some of the polymers such as polyacryonitrile, polyaniline and chitosan have been investigated for cesium ion removal [67,[73][74][75][76][77][78] . Some of the polymers such as polyacryonitrile, polyaniline and chitosan have been investigated for cesium ion removal [67,[73][74][75][76][77][78] .…”

Section: Inorganic-polymer Compositesmentioning

confidence: 99%

Influence of adsorption parameters on cesium uptake from aqueous solutions- a brief review

et al. 2015

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Due to rapid population growth, technological advancement and industrial revolution, the rate of generated waste effluents has become a grave concern. Cesium which possesses high fission yield is generally transferred to liquid wastes especially those emanated from the nuclear power plants, reprocessing of spent fuels, nuclear weapon testing and radionuclides production facilities for medical applications etc. Radiocesium ( 137 Cs) is one of the hazardous radionuclides creates adverse effects on human health and environment.Due to its physical (T 1/2 =30.17 y) and chemical characteristics (alkalinity, solubility etc.), it can be easily assimilated by the living organisms. As a result, the removal of cesium from wastewater is imperative from the health point of view. Several techniques are implemented but in recent time, adsorption has been gaining increasing attention to the scientific community owing to a number of reasons. Hence, this paper presents an overview on sorption of cesium from wastewaters. Consequently, several critical parameters such as sorption capacity, percentage efficiency and the influence of several factors on cesium uptake by various adsorbents have been reviewed in details. 6 Adsorption/ ion exchange of cesium ions onto synthesized and natural adsorbentsThis is a method by which a sorbate is removed or accumulated on the immobile solid from its liquid or gaseous surroundings, and usually referred to as liquid-solid interaction.Normally, this process occurs at the phase of the sorbent and so, it is a surface-based phenomenon [40] . Adsorption can take different dimensions, if the process is initiated as a result of weak intermolecular forces (Van der Waals interactions) then it is specifically called physisorption and this force being weak in nature results into reversible adsorption, but if occurs due to the formation of chemical bonds between the molecules of adsorbate and the adsorbent it is known as chemosorption. Ion exchange on the other hand is a reversible chemical process in which an ion from solution exchanges with similarly charged ion attached to the adsorbent, the solid particle [40] . Due to their common features, adsorption and ion exchange are grouped together as sorption processes for effective sequester of toxins from waste/drinking waters [41,42] . Adsorption is recognized as an effective and economic method for the removal of radionuclides compared to the other approaches owing to a number of reasons such as; the ease of design and operation, adsorbate-specificity, better treatment with no/little secondary waste generation, possibility of using at low concentration, high efficient performance, ease of regeneration and reuse, suitability for both batch and column studies, and the availability of the adsorbents [43] . Normally, a good adsorbent must have a large surface area, good macroporous structure and be stable under chemical, radiation and thermal reaction conditions. However, the behaviour and efficiency of adsorbents can also be influenced by the condition of the so...

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Section: Inorganic-polymer Compositesmentioning

confidence: 99%

Influence of adsorption parameters on cesium uptake from aqueous solutions- a brief review

et al. 2015

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“…Due to its high adsorption capacity and selectivity, manganese oxides and their modifications were widely used to remove heavy metals ions and other harmful matters, such as Pb(II), Cu(II), Cs(I), Cd(II) and some organic dyes [23][24][25][26][27][28]. However, for small size, nano-sized metal oxide adsorbents are easily aggregated and need a next separation process from the solution, which weakened their adsorption capacity and increased the operation cost.…”

Section: Introductionmentioning

confidence: 99%

Hierarchically structured polyacrylonitrile nanofiber mat as highly efficient lead adsorbent for water treatment

Luo

Wang

Jia

et al. 2015

Chemical Engineering Journal

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“…The peak at 1,408 cm -1 corresponds to NH 4 ? and the vibrational bands of P-O, Mo=O and Mo-O-Mo in the AMP are observed from 1,070, 970 and 870 cm -1 to 1,060, 960 and 860 cm -1 , respectively [16,18]. The peaks at 2,924, 2,242, 1,728 and 1,443 cm -1 are attributed to stretching vibration of methylene (-CH 2 -), stretching vibration of nitrile groups (-CN-), stretching vibration of (C=O) and bending vibration of methylene, respectively [28,29].…”

Section: Resultsmentioning

confidence: 91%

“…In this study, 1 M NH 4 Cl solution [16,36] was selected for regenerating process at a temperature of 25°C, contact time of 24 h and adsorbent concentration of 1 g/L and initial Cs ? ion concentration of 100 mg/L.…”

Section: Regeneration Of Amp/pan Nanofiber Adsorbentmentioning

confidence: 99%

“…Recently, different adsorbents were used for Cs ? removal from aqueous solutions using prussian blue caged in alginate/calcium beads [13], potassium hexacyanocobalt ferrate [14], ammonium molybdophosphate-calcium alginate composite [15] and polyacrylonitrile based manganese dioxide composite [16]. Among the previous adsorbents, combination of ammonium molybdophosphate-polyacrylonitrile (AMP-PAN) in the form of granule composite prepared by Sebesta [17] and later developed by Park et al [18] had effective properties of removing Cs ?…”

Section: Introductionmentioning

confidence: 98%

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Preparation and characterization of a novel electrospun ammonium molybdophosphate/polyacrylonitrile nanofiber adsorbent for cesium removal

Tabatabaeefar

Keshtkar

Moosavian

2015

J Radioanal Nucl Chem

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Adsorption of Cs ? ion from aqueous solution onto a novel electrospun ammonium molybdophosphate/polyacrylonitrile nanofiber adsorbent with variation in AMP content, adsorbent concentration, pH, contact time, initial concentration and temperature was studied. The physicochemical characterization was performed by FTIR, XRD, BET and SEM analyses. Langmuir, Freundlich and DubininRadushkevich models were used for analysis of equilibrium data. Kinetic results showed that the experimental data best fitted the pseudo-second-order kinetic model. The adsorption affinity of metal ions onto adsorbent was in order of Cs ? [ Co 2? [ Mg 2? [ Ca 2? [ Sr 2? . The adsorbent could be easily regenerated after five cycles of adsorption-desorption.

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Evaluation of PAN-based manganese dioxide composite for the sorptive removal of cesium-137 from aqueous solutions

Cited by 53 publications

References 27 publications

Influence of adsorption parameters on cesium uptake from aqueous solutions- a brief review

Influence of adsorption parameters on cesium uptake from aqueous solutions- a brief review

Hierarchically structured polyacrylonitrile nanofiber mat as highly efficient lead adsorbent for water treatment

Preparation and characterization of a novel electrospun ammonium molybdophosphate/polyacrylonitrile nanofiber adsorbent for cesium removal

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