Enhanced cesium removal from real matrices by nickel-hexacyanoferrate modified activated carbons

Vanderheyden, Sara; Yperman, Jan; Carleer, Robert; Schreurs, Sonja

doi:10.1016/j.chemosphere.2018.03.096

Cited by 19 publications

(9 citation statements)

References 33 publications

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“…The observed decrease of Cs uptake is because GWB functioned not only as a support for nickel hexacyanoferrate but also as an adsorbent for Cs + ions and as was mentioned above the competition between both monovalent and divalent cations and Cs + for available binding sites on the support surface (GWB) occur. Also, other studies on Cs + removal by metal hexacyanoferrates supported on activated carbons (Kawatake & Shigemoto, 2012;Lalhriatpuia et al, 2014;Vanderheyden et al, 2018) demonstrate that increase of salinity could not significantly affect Cs removal. Kim et al (2017) reported high selectivity of potassium copper hexacyanoferrate-cellulose gel for Cs + ions in untreated seawater.…”

Section: Adsorption Of Cs By Biochar and Modified Biocharsmentioning

confidence: 92%

“…Preparation of potassium nickel(II) hexacyanoferrate(III) incorporated GW biochar was realized using modified procedures according to Vanderheyden, Yperman, Carleer, and Schreurs (2018) and Lalhriatpuia et al (2014). In brief, 30 g of GWB was added to 200 mL of 0.5 mol L −1 NiCl 2 and agitated (120 rpm) for 24 h at 22°C.…”

Section: Preparation Of Modified Biocharsmentioning

confidence: 99%

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Potassium nickel(II) hexacyanoferrate(III)-functionalized biochar for selective separation of radiocesium from liquid wastes

Pipíška

Ballová

Frišták

et al. 2020

Journal of Radiation Research and Applied Sciences

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Biochar is a promising metal-immobilizing material, nevertheless the studies of its modification and application in the removal of radionuclides, especially 137 Cs from contaminated liquids remain rare. This research demonstrated that horticultural waste derived biochar (GWB) produced by slow pyrolysis process could be a suitable Cs adsorbent and also useful support to impregnate the potassium nickel(II) hexacyanoferrate(III) (KNi-HCF). Porous materials combining sorption properties of biochar carrier and KNi-HCF have been prepared using simple and efficient impregnation method. The obtained materials (GWB, KNi-HCF-GWB1, and KNi-HCF-GWB2) have been characterized using N 2 adsorption method, SEM-EDX, and FTIR analysis. Compared to GWB, both KNi-HCF biochars showed improved adsorption properties toward Cs + ions, e.g. rapid kinetics, high Cs adsorption capacities (140 ± 3 μmol g −1 for KNi-HCF-GWB1 and 290 ± 9 μmol g −1 for KNi-HCF-GWB2), and high K d values even in the presence of excess of monovalent (Na + + K + + NH 4 + ) and divalent (Ca 2+ + Mg 2+ + Sr 2+ ) cations. High adsorption capacities could be related to synergistic effects of Cs + ion-exchange with KNi[Fe(CN) 6 ] structure and other mechanisms described for unmodified GWB. Rapid adsorption kinetics and high Cs adsorption capacity indicate the suitability of KNi-HCF biochars to treat large volumes of 137 Cs contaminated liquids.

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Section: Adsorption Of Cs By Biochar and Modified Biocharsmentioning

confidence: 92%

Section: Preparation Of Modified Biocharsmentioning

confidence: 99%

Potassium nickel(II) hexacyanoferrate(III)-functionalized biochar for selective separation of radiocesium from liquid wastes

Pipíška

Ballová

Frišták

et al. 2020

Journal of Radiation Research and Applied Sciences

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“…Electrochemically controlled adsorption and desorption processes have offered an attractive platform due to their modularity and the minimization of secondary pollution. The main feature of these systems is not only their high selectivity from adsorption and ion exchange but also their rapid electron transfer and redox processes, which can reversibly capture and release target ions by changing the potential and direction of the electric field. ,− At present, the interest of researchers mainly focused on Prussian blue and its analogues ,,− in electrochemical separation of Cs + . However, when the iron element in Prussian blue changes valence state under electrochemical conditions, it will break the bond, resulting in poor electrochemical stability of the material.…”

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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“…However, the presence of other cations reduces the Cs adsorption performance of biochar and activated carbon (Kimura et al 2014;Asada et al 2018a). Thus, improvement in the Cs adsorption performance of biochar and activated carbon has been demanded, and several researchers have proposed a combination of MFCs and activated carbon (Lalhmunsiama et al 2014;Vanderheyden et al 2018;Kim et al 2019).…”

Section: Introductionmentioning

confidence: 99%

“…To combine MFCs with either activated carbon or biochar, impregnation is usually performed. Lalhmunsiama et al (2019) and Vanderheyden et al (2018) obtained immobilized NiFC on activated carbon by taking NiCl 2 -loaded activated carbon into a potassium ferricyanide solution. Kim et al (2019) and Asada et al (2018a) had also prepared Prussian blue-impregnated activated carbon using the same method.…”

Section: Introductionmentioning

confidence: 99%

Radioactive Cs Removal from Aqueous Solutions by Biochar-Immobilized Potassium Nickel Hexacyanoferrate Prepared Using Ball Mill

et al. 2021

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Biochar-immobilized potassium nickel hexacyanoferrate (KNiFC) as a sorbent for removal of radioactive cesium (Cs) from aqueous solutions was prepared using a novel method. Japanese cedar sawdust loaded with NiSO 4 using a ball mill was carbonized at various temperatures. The resultant Ni-loaded biochar was immersed in a K 4 [Fe(CN) 6 ]•3H 2 O solution, and biochar-immobilized KNiFC was obtained. For comparison, Ni-loaded biochar was also prepared using the impregnation method. The loading of Ni using the ball mill resulted in a higher Ni amount in the biochar compared with the impregnation method. The carbonization at 400 °C was suitable for Cs adsorption on biochar and synthesis of KNiFC. Consequently, KNiFC immobilization on biochar improved the Cs sorption performance in aqueous solutions with Na + , K + , Ca 2+ , Mg 2+ , and Cs + . The sorption performance was selective in aqueous solutions with radioactive Cs and other cations of high concentration. HighlightsLow-cost Cs adsorbent was prepared using a novel method from bioresource and KNiFC. The application of ball mill was effective for loading Ni on biochar. Immobilization of KNiFC on biochar improved Cs sorption performance. Removal of 134 Cs and 137 Cs using biochar-immobilized KNiFC was selective.

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Enhanced cesium removal from real matrices by nickel-hexacyanoferrate modified activated carbons

Cited by 19 publications

References 33 publications

Potassium nickel(II) hexacyanoferrate(III)-functionalized biochar for selective separation of radiocesium from liquid wastes

Potassium nickel(II) hexacyanoferrate(III)-functionalized biochar for selective separation of radiocesium from liquid wastes

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

Radioactive Cs Removal from Aqueous Solutions by Biochar-Immobilized Potassium Nickel Hexacyanoferrate Prepared Using Ball Mill

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