Efficient and selective removal cesium from strong acidic medium by novel butenyl-calix [4]-crown 6 functionalized millimeter-sized mesoporous carbon spheres sorbent: Experimental and theoretical study

Wu, Yongchuan; Bai, Haonan; Dong, Zhili; Meng, Chao; Zhi-Jian, Zheng; Liu, Yuhui; Zhang, Zhibin

doi:10.1016/j.molliq.2023.121632

Cited by 4 publications

(1 citation statement)

References 48 publications

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“…In general, the adsorption site and spatial configuration of ion-selective adsorbents are mainly related to the characteristics of target ions, including ion species, valence, ion radius, ion hydration radius, and Gibbs dehydration energy. Various adsorbents such as inorganics (PBs, AMP, , metal oxides, − metal sulfides − ), organics (commercial ion exchange resins, polymers ,, ), biosorbents (biomass-based charcoal , ), and composites (magnetic composites, MHCF-based materials, − supramolecular derivative-based materials ,− ) have been widely used for the removal of radioactive cesium ions due to their abundant O or S donors and well-dined channels or cages. However, these materials still have low kinetics and secondary pollution during the regeneration process.…”

Section: Introductionmentioning

confidence: 99%

Electrochemically Selective Separation of Cesium Ion Using a Silicomolybdate Doped Polyaniline Composite

Bian,

Zhang,

Liu

et al. 2024

Ind. Eng. Chem. Res.

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Rational design of efficient adsorbents for recovering Cs + from complex brines is crucial for the sustainable industrial supply of cesium resources. Herein, a novel silicomolybdate doped polyaniline composite (SiMo 12 −PANI) was facilely prepared and used for extracting Cs + via the electrochemical process for the first time. Silicomolybdic acid contains abundant oxygen sites and can be used as a receptor of Cs + . The morphology and chemical structure of the composite were fully characterized, and the effects of potential, ion concentration, and solution pH in the electrochemical separation Cs + process were further studied. The results revealed that the SiMo 12 −PANI electrode exhibited a relatively fast ad/desorption kinetics of Cs + due to the intensifying effect of the electric field. The adsorption capacity can be increased from 14.4 mg•g −1 to 24.9 mg•g −1 at the initial cesium concentration of 50 mg•L −1 , and the desorption ratio was also improved. In particular, the separation factors of Cs + over K + , Rb + , Ca 2+ , and Mg 2+ can reach 11.7−16, 2.1−2.3, 205−726, and 622−708, respectively. XPS results confirmed that the excellent selectivity for Cs + was achieved by ultra-affinity of oxygen donors toward Cs + , and the reversible capture and release of Cs + may be achieved by the driving force of the electric field and the redox reaction between Mo 6+ and Mo 5+ . It is expected that our work may provide a green and sustainable approach for selective recovery of Cs + from complex solutions using a novel silicomolybdate doped polyaniline composite via an electrochemical process.

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Section: Introductionmentioning

confidence: 99%

Electrochemically Selective Separation of Cesium Ion Using a Silicomolybdate Doped Polyaniline Composite

Bian,

Zhang,

Liu

et al. 2024

Ind. Eng. Chem. Res.

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Study on cesium crystallization solidification in fly ash based cesium zeolite

Zou,

Wang,

Huang

et al. 2024

J Radioanal Nucl Chem

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Upcycling of easy separated Casuarina equisetifolia fruit waste as a biosorbent: tailoring the surface modification to enhance selective removal of cationic dye or simultaneously removal of cationic and anionic dyes

Radwan,

Omar,

Marey

2023

Appl Water Sci

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This study aimed at the valorization of the abundant and underutilized Casuarina equisetifolia fruit waste (CEFW) biomass as an intact easily separable biosorbent for the treatment of dye-polluted water. The intact CEFW was chemically modified to improve its selective biosorption of MB, or to simultaneously remove MB and MO. H2O2 treatment increased the surface functional groups, created pores, and enhanced the selective biosorption of MB. CTAB treatment introduced quaternary ammonium groups and enabled the simultaneously removal of MB and MO. The biosorption of MB by H2O2-treated CEFW was optimum at pH 6 and increased with the mass of the biosorbent. The pH can be adjusted to enhance the biosorption efficiency of the CTAB-treated CEFW toward MB or MO. pH 6 achieves balanced simultaneous removal of MB and MO. The kinetic and isotherm studies revealed that electrostatic interactions and chemisorption dominate the biosorption process which has multilayer character. The single and binary isotherm studies demonstrated that the co-existence of MB and MO enhances their removal. Overall, the modification of the CEFW can be tuned to remove anionic, cationic dyes or both simultaneously and synergistically. The low-cost and easy separation nominate the application of the intact CEFW for dyes removal from polluted water.

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Efficient and selective removal cesium from strong acidic medium by novel butenyl-calix [4]-crown 6 functionalized millimeter-sized mesoporous carbon spheres sorbent: Experimental and theoretical study

Cited by 4 publications

References 48 publications

Electrochemically Selective Separation of Cesium Ion Using a Silicomolybdate Doped Polyaniline Composite

Electrochemically Selective Separation of Cesium Ion Using a Silicomolybdate Doped Polyaniline Composite

Study on cesium crystallization solidification in fly ash based cesium zeolite

Upcycling of easy separated Casuarina equisetifolia fruit waste as a biosorbent: tailoring the surface modification to enhance selective removal of cationic dye or simultaneously removal of cationic and anionic dyes

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