Affinity and removal of radionuclides mixture from low-level liquid waste by synthetic ferrierites

Seliman, Ayman F.

doi:10.1007/s10967-011-1478-z

Cited by 12 publications

(4 citation statements)

References 32 publications

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“…2 showed a fast biosorption process with three disparate phases. The higher rate of the first period advises that the biosorption was physical in nature and limited by the available sites on the biosorbent; easily accessible by the Co 2+ [10,11]. At the second period, the rate was slowed down because the Co 2+ ions met a higher resistance to penetrate deeper in the remaining intraparticulate active sites [12].…”

Section: Effect Of Contact Timementioning

confidence: 99%

Kinetic and thermodynamic study of cobalt adsorption by spent coffee

Imessaoudene

Hanini

Bouzidi

et al. 2016

Desalination and Water Treatment

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A B S T R A C TThe biosorption of cobalt from aqueous solution onto a spent coffee (SC) was carried out to assess the effectiveness of the adsorbent used in the removal of Co(II) from aqueous solution by batch tests. Adsorption of Co(II) as a function of contact time, pH, and temperature was investigated. The kinetic study revealed that adsorption followed better a second-order type reaction with high correlation coefficient (R 2 = 0.999). Adsorption data were described using Freundlich and Langmuir models. The thermodynamic study for the Co(II) adsorption onto SC showed that the process was spontaneous with a raised affinity for Co(II) (ΔG˚< 0 and ΔS˚> 0), exothermic (ΔH˚< 0), and occurred with physical adsorption mechanism (E a = 10.922 kJ mol −1 ).

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Section: Effect Of Contact Timementioning

confidence: 99%

Kinetic and thermodynamic study of cobalt adsorption by spent coffee

Imessaoudene

Hanini

Bouzidi

et al. 2016

Desalination and Water Treatment

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“…5 whereas in Table 2 literature data concerning the sorption capacity of several sorbents (for the same metals and under similar experimental conditions) are presented for comparison [47][48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63]. Taking into consideration the literature data and the findings of this study one can conclude that the investigated MoO 3 can be used for sorption of Ba, Cs and Eu from aqueous solutions as well as is an excellent sorbent for removal of Pb and U.…”

Section: Sorption Isothermsmentioning

confidence: 67%

“…For each batch experiment 50 mg of the prepared MoO 3 were contacted with 10 mL of each solution in polycarbonate tubes and the mixture was agitated on a mechanical shaker for 24 h. The mixture was then centrifuged at 4000 rpm for 10 min to separate the sorbent from the supernatant and the equilibrium pH was measured. The residual concentration of the metal in the supernatant was finally determined by c-ray spectroscopy using a HPGe detector (CANBERRA, REGe detector, efficiency 20 %, energy resolution 2.1 keV for the 1332 keV 60 Co c-radiation) connected with a standard computerbased gamma-spectroscopy set-up (in the case of the Ba, Cs and Eu), atomic absorption spectrometry-AAS with a Perkin Elmer Spectrophotometer (model 300A) (in the case of Pb) and Arsenazo-III method with a Shimadzu UV160A Spectrophotometer (in the case of U) [30][31][32].…”

Section: Sorption Experimentsmentioning

confidence: 99%

Thermally modified molybdenum oxide as a potential sorbent for the removal of metal cations from aqueous solutions

Kapnisti

Noli

Arvanitidis

et al. 2015

J Radioanal Nucl Chem

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The effectiveness of a low cost sorbent produced by thermal modification of ammonium heptamolybdate (AHM) in adsorption of radionuclides and heavy metals was investigated. The product was characterized by XRD, SEM and Raman spectroscopy. Sorption experiments were performed in Pb, U, Cs, Ba and Eu solutions (pH 2.0-6.0). The obtained isotherms were simulated by Langmuir and Freundlich isotherms and kinetics data were used in order to evaluate the sorption mechanism. The results showed the high and selective efficiency of the AHM-derived MoO 3 especially in Pb and U removal whereas the desorption experiments revealed its environmental applicability under real conditions for the investigated metal cations.

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“…More generally it has been found that graphene oxide 192 and activated carbon 193 are both very effective at adsorbing radionuclides, as are synthetic ferrierites. 194 The whole field of radionuclide adsorption 195 has been reviewed.…”

Section: Nuclear Wastementioning

confidence: 99%

Radiochemistry

Urch

2013

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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In this year's review of recent progress in radiochemistry, new radiochemical methods for isotope production, advances in labelling procedures, radioactive isotopes in the environment and miscellaneous topics of radiochemical interest, will be covered but not radiation chemistry, neutron activation analysis and the chemistry of elements that happen to be radioactive. HighlightsThe incorporation of radioisotopes into, sometimes onto, nanoparticles, is becoming increasingly important in nuclear medicine, for therapy and also in diagnosis (ref. 108, 109, 148, 149, 153 and 261-264). Another important piece of work was the use of density functional theory to predict the properties and behaviour of a labelled molecule (ref. 130). General introductionIt is with great sadness that the death of Michael J. Welch in May of 2012 must be recorded. He it was who brought radiochemistry to the medical world, who demonstrated, to a sceptical audience, the potential that radioactive molecules had, when combined with tomography, for diagnosis and tumour location. For forty years he ceaselessly developed nuclear medicine, extending its range to more and more positron emitting isotopes and developing new chemical ways of incorporating them into increasingly complex bio-molecules, 'radiopharmaceuticals'.No new books on radiochemistry in 2012, but a review 1 of the discovery of artificial radioactivity and the report 2 of a conference on the synthesis and applications of labelled compounds have been published. Other conferences have been more focused on specific aspects of the preparation and uses of radioactive compounds, for medical diagnosis and therapy, 3 for autoradiography 4 and to study drug metabolism. 5 A history of the use of radio-iodine has published 6 and the design of bifunctional chelating molecules, 7,8 which can both encapsulate a radioactive atom and join benignly (one hopes so) to a protein or other bio-molecule, reviewed.

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Affinity and removal of radionuclides mixture from low-level liquid waste by synthetic ferrierites

Cited by 12 publications

References 32 publications

Kinetic and thermodynamic study of cobalt adsorption by spent coffee

Kinetic and thermodynamic study of cobalt adsorption by spent coffee

Thermally modified molybdenum oxide as a potential sorbent for the removal of metal cations from aqueous solutions

Radiochemistry

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