Equilibrium and kinetic studies of the sorption of cesium by potassium nickel hexacyanoferrate complex

Ismail, Ibrahim; El-Sourougy, M. R.; Moneim, Nabil Abdel El; Aly, H. F.

doi:10.1007/bf02349137

Cited by 40 publications

(13 citation statements)

References 15 publications

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“…Salem, Egyptian ministry of education, Cairo, Egypt. E-mail: nasalem2015@yahoo.com Paper received: 11 September, 2014 Paper accepted: 15 July, 2015 method affects the crystallinity of the metal oxides and its ion exchange properties [7][8][9][10][11][12][13][14]. Sol-gel process is an attractive alternative to other methods for synthesis of inorganic ion-exchangers for many reasons: for example, low temperature synthesis, simple equipment that is used, thin film formability and so on.…”

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confidence: 99%

Sorption of rare-earth erbium from aqueous solution onto sol-gel-derived zirconia

Salem

Yakout

2016

Hem Ind

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Zirconia powder was synthesized via sol gel method and used for erbium sorption. The adsorption is strongly dependent on pH of the medium where the removal efficiency increases as the pH turns to alkaline range. The process was very fast initially and maximum adsorption was attained within 60 min of contact. Pseudo-second-order model and homogeneous particle diffusion model (HPDM) was found to be the best to correlate the diffusion of erbium into zirconia particles. Adsorption thermodynamic parameters were calculated. Erbium adsorption is an endothermic (ΔH > 0) and good affinity of erbium ions towards the zirconia (ΔS > 0).

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confidence: 99%

Sorption of rare-earth erbium from aqueous solution onto sol-gel-derived zirconia

Salem

Yakout

2016

Hem Ind

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“…In the work [14] sorption on ferrocyanides is described by Freundlich isotherm. In the work [15] sorption sites of ferrocyanides, obtained via co-precipitation and further granulation, are characterized, and probable sorption chemisms of ions from solutions are described: exchange of metal or H 3 O ?…”

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confidence: 99%

Peculiarities of sorption isotherm and sorption chemisms of caesium by mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide

Воронина

Семенищев

Nogovitsyna

et al. 2013

J Radioanal Nucl Chem

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Sorption isotherm of caesium from tap water by mixed nickel-potassium ferrocyanide based on hydrated titanium dioxide is obtained for a wide range of concentrations of caesium. It is shown that there are three types of specificity to caesium sorption sites in this sorbent. Sorption chemisms of caesium are studied, factors conditioned high sorption capacity of the sorbent are revealed. It is shown that occupation of sorption sites I and II is well approximated by Langmuir equilibrium and this process can be described within the bounds of theory of ion exchange. The expected sorption chemism of caesium by sorption sites III at high concentrations of caesium ([50 mg L -1 ) is precipitation of mixed nickel-caesium ferrocyanide in pore space of the sorbent.

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“…Considering that reported K d values for PB and PB analogue adsorbents in batch mode are in the range of 10 3 to 10 6 mL/g, depending on the hetero metal M in [M x Fe 1−x (CN) 6 ] y− and on the support bead material (silica, alumina, polymers etc.) 13 , 19 , 20 , 25 – 28 , 31 , 38 , 43 – 45 , the K d value of the present co-precipitation method is remarkably high, which is due to precipitation and aggregation effect of DND in co-precipitation mode. Co-precipitation effect gives often better removal efficiency than batch mode.…”

Section: Resultsmentioning

confidence: 81%

A Highly Efficient Adsorbent Cu-Perusian Blue@Nanodiamond for Cesium in Diluted Artificial Seawater and Soil-Treated Wastewater

Matsumoto

Yamato²,

Kakimoto

et al. 2018

Sci Rep

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A new adsorbent Cu-Perussian blue@Nanodiamond (Cu-PB@DND) for Cs+ removal was prepared and characterized with IR, SEM, X-ray diffraction, particle size analysis, and zeta-potential. The adsorbent consists of a core of aggregated detonation nanodiamond (DND) particles with the surface treated with Cu-PB. Cesium adsorption was studied in two modes; a co-precipitation mode and a batch mode. In the co-precipitation mode, DND, CuCl2, and K4[Fe(CN)6] were added sequentially to a Cs+ solution in diluted artificial seawater. In the batch mode, adsorbent Cu-PB@DND was dispersed into a Cs+ solution with stirring. The distribution coefficient (Kd) of the co-precipitation mode was 8.8 × 107 (mL/g) at Cs+ 6.6 ppm in 0.07% seawater. The Kd value of the batch mode was 1.3 × 106 (mL/g). Precipitation of Cs+-incorporated particles was complete, and post filtration was not necessary. Excess copper and iron ions were completely removed and were not detected in the supernatant. The adsorption data for Cu-PB@DND were analyzed by assuming Langmuir isotherm and a good fit was obtained with a maximum adsorption capacity Qmax of 759 mg/g. The co-precipitation method was also applied to soil-treated wastewater.

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Equilibrium and kinetic studies of the sorption of cesium by potassium nickel hexacyanoferrate complex

Cited by 40 publications

References 15 publications

Sorption of rare-earth erbium from aqueous solution onto sol-gel-derived zirconia

Sorption of rare-earth erbium from aqueous solution onto sol-gel-derived zirconia

Peculiarities of sorption isotherm and sorption chemisms of caesium by mixed nickel–potassium ferrocyanide based on hydrated titanium dioxide

A Highly Efficient Adsorbent Cu-Perusian Blue@Nanodiamond for Cesium in Diluted Artificial Seawater and Soil-Treated Wastewater

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